I sent this question to Massive the company who is selling JBA headers on ebay.

I noticed Doug Thorley has Dyno numbers to justify their price. Does JBA plan on giving dyno numbers on this product?

I'm quite sure JBA has dyno numbers posted on their site.

If you ignore the differences in build quality and materials, you'll find that the JBAs are going to make more power at the top end of curve, where the DTs are going to be considerably better in the midrange.

If the DTs were made from even the cheapest grade of stainless, I'd buy them in a heartbeat.

I looked on JBA's website with no luck before I asked the question. I wish they did have some information because i have a jba shop about 1 mile from my house.

Have you tried calling/going to the shop to ask questions?

I'll echo what thumbster said... high end gains from what i've seen.... I personally would rather have the midrange gains.... so i've choosen the DT.... I have contacted both JBA and DT... DT's customer service has been a great help so far.... JBA has yet to return my calls and/or emails.... now if I could just muster up the guts and time to install them myself....

I have sent a few emails to JBA with no response for over a month now. I am really leaning towards the DT product. My problem is I really dont want to pay 600 bucks to have them installed and I am not mechanical enough to do it on my own. Maybe I will call jba and see how much they would charge to put in the competitors product.

according to urd,
the jba headers are much easier to install.
i have heard that it makes a huge difference at the top of
1st gear. the claims are right
if you have questions about headers for the 5.7
I recommend calling urd they sell both jba and dt.

there number is 18778873872
ask for brian

thank you very much for the info Pullthis.
I dont know why I am so skeptical of JBA? like i said I live very close to them and have seen many of their mustangs and they all kick ***. I think its the fact that their communication skills are sorely lacking and the fact that they have not posted dyno numbers.

i am also very curious about the jba headers. i want the headers that will get me from point a to point b petal to the metal the fastest. im not worried about towing. dt claims to make all this power but if it doent help in the higher rpms than i want something that does. do u guys think jba is the answer im looking for?? not to mention easier install time and they are cheaper. anybody with these headers pleeease help me out. im looking to buy a set of headers and corsa sport exhaust within the next month
thanks in advance

DT & JBA comparison:

DTs are a tri-y design made of mild steel with ceramic coating. Some have expressed that stainless is a better material.

JBAs are a 4 into 1 design made of 409 stainless. Some have called 409 stainless barely stainless.

Both companies have good reputations and history.

409 stainless info:
Stainless Works (http://www.stainlessworks.net/cart/faq.php)
Read the 5th bullet point

https://www.justdieseltrucks.com/SiteInfo/304vs409.asp

General header articles:
Optimize Vehicle Performance With Exhaust Headers (http://ezinearticles.com/?Optimize-Vehicle-Performance-With-Exhaust-Headers&id=756068)

Exhaust Headers - A Crash Course On Automotive Performance (http://ezinearticles.com/?Exhaust-Headers---A-Crash-Course-On-Automotive-Performance&id=788022)

Theory (http://www.burnsstainless.com/TechArticles/Theory/theory.html)

Coating articles:
Cool High Tech Ceramic Coatings- Car Craft Magazine (http://www.carcraft.com/techarticles/high_tech_ceramic_coatings/index.html)

Tri-Y vs 4 into 1 headers:
Exhaust Pipes Test - Car Craft Magazine (http://www.carcraft.com/techarticles/116_0312_exhaust_pipes_test/index.html)

Header - Exhaust Manifold - Tech - Jack Burns - Popular Hot Rodding (http://www.popularhotrodding.com/tech/0310phr_jack_burns_exhaust_manifold_header_tech/index.html)
Read the sections on primary and secondary pipes and the section on stainless...409 is not discussed.

I know that some of these articles discuss other brand cars, but I included them for reference.

Okay now pick your header!

hey thanx alot man thats what i was looking for im leaning towards the jba's i think can anybody talk from experience that has these? quarter mile times? races??

That was awesome Tony, Thank you very much.
That being said I still wish JBA would put a dyno chart up.
I sent the dt guys a couple Private messages in the last 2 days hopefully they get back to me soon otherwise I will save the $400 and go with JBA.

and also how do u guys think the jba shorty style headers will affect the sound of the corsa exhaust or any aftermarket system for that matter??

should make it slightly deeper and throatier... I would get them done at the same time if I were you.

Thanks Tony for taking the time to post up that info, very helpful in my decision. I think I will be going with the JBA headers with ceramic coating. I would rather have the power up top which is were you will be mostly when racing. Plus what you lose on the bottom end can be made up with tunning when that comes available. And it will only help that much more if you plan on going forced induction.

Just so you guys realize, The DT's give power all the way through. For light to light or drag racing you want power in the low to mid to give you the holeshot. That is why racers put low gears in. To give them the takeoff advantage. If they wanted top end then they would put in 3.00 gears to give them max speed but it would take awhile to get there. These engines run best at midrange to the bottom of the topend but you have to have power to get there.

Nick

As far as install times, They both should be about equal because they both bolt in between point "A" and point "B" and I guarantee ours will bolt in.

Nick

Just got off the phone with JBA corporate who states their headers are 20hp at the wheels and 32 pounds of tq. I am still leaning towards DT because their customer service seems to be a tad bit better also they have offered to do a head to head competition that JBA backed away from.
Also I dont know if this means anything but JBA said they had to do their dyno pull in 3rd gear due to the truck being automatic or something like that and that they would have the graph up on their website soon.

I know there was a big post about this earlier and it seems that in a race the only time u would be at 3krpms is in first gear where im spinning all the time as it is. the six speed makes gear changes usally not occur under 4krpms so thats y im thinking the jba's r for me, although i appreciate the quality and reputation of your product nick, i just think i need the top end power more than somebody that would do alot of towing. while i think the DT headers are a great product i just dont think they are for me in my application

I don't know how the JBA's perform on the 5.7 ,but I had a pair on my 4.7 and the DT's that I just installed lined up perfectly wokman ship was top notch. To me the install was easier than my 4.7 JBA install. It took 3.5 hours start to finish with two people. Let me say I am not affiliated in any way with DT but my personnal opinion is these headers pull from down low all the way through. The reason I went with DT is because I wasn't impressed with my JBA's on my 2000 Tundra. I have the ceramic coated headers on for about a month. Their is no discoloration on the headers it looks just like it came out of the box.:tu:

Im still whining for an independent dyno of both, ey Nick. Until one is done, I wont buy either.

Workin on it!!

Workin on it!!

I dont fault you guys. Short of draggin JBA out of their facilities, there wont be one done. Least yall stepped up to the plate.

I know that. Atleast the board will have an unbiased report done. There is a member down in Sandiego that has stepped up to pay for dyno time in exchange for an install. I am working on getting it approved by the people in charge.

Thanks
Nick

I am putting in a Call to JBA tomorrow with a copy of these boards to see if they want to play ball but something tells me they dont want their headers any where near a dyno that isn't theirs.

I have a set of JBA headers sitting in my RCSB right now in San Diego, does anyone know a place where i could get it put on a dyno and see before and afters at a reasonable price.

What Part of San Diego? I am In La Mesa so Santee is pretty close and thats the dyno shop I am planning on taking the Thorley headers I got a quote of $104 for 2 back to back runs.

Since JBA isnt going to step up maybe you,me,and Thorley can make it happen by ourselves. You and I can take our 2 trucks there before and after???????

What do you guys think?
seems pretty legit.

That would work for us at Thorley. Just make sure to give sufficient time for the ECU's to relearn and do the tests in similar temp scenarios.

how long does it take an ECU to make changes?

Same truck would be better for sure but I dont think JBA wants to play ball. I figure if we do before runs at the same DYNO shop and after runs at the same dyno shop and we both put the same number of miles on the trucks after headers. Maybe something like 300 mile after headers give or take 30 miles?????

I am in north county but willing to see what can be done, right now i am looking for someone to do the install jba's speed shop quoted $470 so shopping around to see if there is anything better, for the dyno is it $104 each time the truck is brought in? Because if so $268 for gas and the time on the machine is a little steep for me to sport along with the install.

Give Richards performance in Vista a call. I just talked to Brian over there and he is going to take very good care of you TS guys. His install price was much less than that.
Their # is 1-760-758-7600 tell him you are from the forum.

Nick

Approx 2-300 miles will allow the Ecu to relearn all the parameters.

how long does it take an ECU to make changes?

Tiber we could look for another dyno shop mid way.... Maybe they will give us a discount since we are going to do a total of 4 different tests.

sure, i went to the installer nick suggested and got a price i am willing to commit to, now if we can find something, closer, or less expensive i would be happy to take the truck in to by dynoed.

Approx 2-300 miles will allow the Ecu to relearn all the parameters.

Does disconnecting the battery and resetting the computer really help anything? And if so, does it negate the entire 2-300 mile period, or just shorten the relearning process?

Does disconnecting the battery and resetting the computer really help anything? And if so, does it negate the entire 2-300 mile period, or just shorten the relearning process?

It clears all the short and long term fuel trims and learned sensor baselines. To answer your question - yes it does, but it will learn faster from a hard reset than from readjusting existing learned parameters. Reseting the ECM can also avoid the likelyhood of a CEL, which can be triggered by an abrupt change in a sensor's reading from the installation of a bolt on part. Any change in airflow made to the engine (intake, exhaust etc.) should be followed by disconnecting the battery for a hard reset of the ECM.

All that having been said, it's not impossible to teach an old dog new tricks but it's definitely much harder :D

Well said Thumbster!

I have a serious case of add! since none of these companies can get their **** together i am ordering a lift kit rims and tires.

hi, on monday i had a set of of JBA 2011s headers on my truck by a professional.
i have a 4.7l 2005 double cab
i will contest many things.
1 the computer is relearning.
2 throttle response is immediate,powerful & aweseome
3 it is getting better and better every day, the more i drive it.
4 low end ,mid range ,and top end is ALL better.
my truck is louder , faster, and a much better throttle response.
if you look at the stock headers and match them up with the JBA, there is a huge difference. my installer said toyota should be ashamed of themselves. making such a poor product. 3 of the ports come out and go into 1 pipe. there is only 1 long pipe.
all the JBA are all the same size coming out of each exhaust port.
and such small size pipes.
i might have named a few things wrong, i don't know the technical names for everything.sorry.
but i do feel the difference.

and in my opinion worth every penny i paid for the headers and the install.

1 thing that is so very important.
i read this and went out and bought them for the proper install.
i would say no matter what type of headers you purchase, by OEM manifold gaskets!!!
### please buy the oem manifold gaskets ####
other wise you will be re tightening every month.
gorilla

The 5.7's use oem gaskets. We are working on some very Hot stuff at the moment that everybody in the Tundra world will appreciate.

Nick

Don't tease us like that!!! Can you give us a hint??

yeah enlighten us :)

cmonnn! ya gotta tell us!

or at least me! :) gotta catch up to everyone else with mods and i live in riverside

" Default Re: JBA Headers.
The 5.7's use oem gaskets. We are working on some very Hot stuff at the moment that everybody in the Tundra world will appreciate.

Nick"


How long do we have to wait?

hi, i have a 2005 4.7 . i had JBA 2011s installed last monday. today i was at a light and steped on it. it spun the tire. that never ever happened before. i know it was because of the JBA headers giving me more power.i highly recommend JBA. use OEM manifold gaskets.if you seen what the OEM manifold's(header) look like compared to the JBA, toyota should be ashamed of themselve's for making such a poor product. i highly recommend JBA. it does cost alot for the headers, another set of oem manifold gaskets and the professional installation. but i know it was worth every penny i spent.
i am so happy now. i have a K & N cold air intake, JBA headers, and a magnaflow muffler with dual tail pipes out the back.
the truck sounds so mean, i am so happy. i wish i knew how to get the Y pipes ,so i could eliminate the cat's. and not have OEM sensors going off. i heard that would make it even louder and even more powerful.
gorilla

Well I called my dealer today and asked if they would install after market headers on my truck. They said no at first because they didn't have the equipment to wield one on. I told em it was a bolt-on, they said they would have to check and see and would call me back tomorrow. I hope they hook me and I hope they know what they're doing. Who better to install then the dealer......right? lol

Well I called my dealer today and asked if they would install after market headers on my truck. They said no at first because they didn't have the equipment to wield one on. I told em it was a bolt-on, they said they would have to check and see and would call me back tomorrow. I hope they hook me and I hope they know what they're doing. Who better to install then the dealer......right? lol

Do it yourself - after all the worrying about how much harder the 5.7 tundra header install appears to be than the older tundras, I convinced myself otherwise from other people's experiences and from installing a set on my neighbor's DC a few weeks back. They're not that hard to do. It took us just over 3 hours to do. I was very surprised, as it was easier than it looks. The JBAs appear to make some decent power gains in the upper RPMs, but still improved the low end somewhat despite not being a 4-2-1 design.

Do it yourself - after all the worrying about how much harder the 5.7 tundra header install appears to be than the older tundras, I convinced myself otherwise from other people's experiences and from installing a set on my neighbor's DC a few weeks back. They're not that hard to do. It took us just over 3 hours to do. I was very surprised, as it was easier than it looks. The JBAs appear to make some decent power gains in the upper RPMs, but still improved the low end somewhat despite not being a 4-2-1 design.

Me and pops may give it a go. Are there any special tools you needed for the job that most people may not have? Thanks for the advise:tu:

Me and pops may give it a go. Are there any special tools you needed for the job that most people may not have? Thanks for the advise:tu:

Just a really good assortment of swivels and extensions with lots of different style sockets will do the job nicely. Just take your time and have patience with it. Undoing the engine mounts and jacking up the engine a bit helps a lot - use the old wood block under the oil pan trick. Pulling the front wheels helps too, giving you better access. I took some tips from the doug thorley install thread, which is pretty much the same process.

Just a really good assortment of swivels and extensions with lots of different style sockets will do the job nicely. Just take your time and have patience with it. Undoing the engine mounts and jacking up the engine a bit helps a lot - use the old wood block under the oil pan trick. Pulling the front wheels helps too, giving you better access. I took some tips from the doug thorley install thread, which is pretty much the same process.

Thanks for the tips, since dealer has called back and quoted me 12 hours at $900 I will be trying this job myself. I did fax them over a copy of the install instructions to see if they could do a little better though.

It clears all the short and long term fuel trims and learned sensor baselines. To answer your question - yes it does, but it will learn faster from a hard reset than from readjusting existing learned parameters. Reseting the ECM can also avoid the likelyhood of a CEL, which can be triggered by an abrupt change in a sensor's reading from the installation of a bolt on part. Any change in airflow made to the engine (intake, exhaust etc.) should be followed by disconnecting the battery for a hard reset of the ECM.

All that having been said, it's not impossible to teach an old dog new tricks but it's definitely much harder :D

Well, I thought Id posted a thanks for the info, but I guess not.:clown:

Thanks for the info. :tu::D

Well my dealer called me back, looking at 7.5 hour install at $525. Supposedly they looked it up on the internet and researched it. That's a lot better than $900 but I think I'll stick to trying it myself first. I also called JBA and he said something about there will be an independent magazine running a dyno. He said he couldn't remember if it was Truckin or Hot Rods and HP. Either way I'm looking forward to it.

Well my dealer called me back, looking at 7.5 hour install at $525. Supposedly they looked it up on the internet and researched it. That's a lot better than $900 but I think I'll stick to trying it myself first. I also called JBA and he said something about there will be an independent magazine running a dyno. He said he couldn't remember if it was Truckin or Hot Rods and HP. Either way I'm looking forward to it.

Taking your sweet time, you should be able to get them installed in under 5 hours. My motto is "access is key" - that means I'd rather spend 10 minutes getting stuff out of the way instead of it taking a 1/2 hour working around it. One really good thing to have is a vast assortment of 12mm 12 point wrenches, especially the ratcheting kind. Having a set of ratchet wrenches is the best tool investment you'll ever make :D

From my own experience I always like to emphasize taking your time. I have the tendency to be a hot head when something goes wrong working on a vehicle (ask my neighbors :D ). Just take plenty of breaks an allow yourself twice the given time to get it done.

Hope it goes well ;)

Well, I thought Id posted a thanks for the info, but I guess not.:clown:

Thanks for the info. :tu::D

Your totally welcome!

I think I'll stick to trying it myself first.
This is good. It has been a while since we saw any new timeslips. :D

I also called JBA and he said something about there will be an independent magazine running a dyno. He said he couldn't remember if it was Truckin or Hot Rods and HP. Either way I'm looking forward to it.

they said the same thing to me last week. I am hoping that we can get something together and do our own tundra solutions competition. I have trouble believing magazines cause you never know who is taking money on the side to inflate numbers. On the other hand I would 100% trust members of this site to tell the truth.

Your 2005-4.7 isnt anything remotely close to the 5.7 platform,glad your a happy camper from your investment but please stick to apples to apples.:tu:





hi, on monday i had a set of of JBA 2011s headers on my truck by a professional.
i have a 4.7l 2005 double cab
i will contest many things.
1 the computer is relearning.
2 throttle response is immediate,powerful & aweseome
3 it is getting better and better every day, the more i drive it.
4 low end ,mid range ,and top end is ALL better.
my truck is louder , faster, and a much better throttle response.
if you look at the stock headers and match them up with the JBA, there is a huge difference. my installer said toyota should be ashamed of themselves. making such a poor product. 3 of the ports come out and go into 1 pipe. there is only 1 long pipe.
all the JBA are all the same size coming out of each exhaust port.
and such small size pipes.
i might have named a few things wrong, i don't know the technical names for everything.sorry.
but i do feel the difference.

and in my opinion worth every penny i paid for the headers and the install.

1 thing that is so very important.
i read this and went out and bought them for the proper install.
i would say no matter what type of headers you purchase, by OEM manifold gaskets!!!
### please buy the oem manifold gaskets ####
other wise you will be re tightening every month.
gorilla