Throttle body spacers for 4.7L

derone · #1 (**permalink**) 09-08-2003, 11:20 AM

I've seen some of these for sale and wanted to check and see if anyone was using one and if you could tell any difference. On my 5.7L TBI chevy, I could tell a difference, not sure how the 4.7L toyota would respond.
Doug

DevinSixtySeven · #2 (**permalink**) 09-08-2003, 01:26 PM

yeah, the only way you can tell it's installed is because your truck will whistle and a hundred bucks will mysteriously disappear from your wallet. been there, done that, got jaded.

*edit* it is still selling because people believe it will work for them, even though it didn't work for all their buddies, because their truck is somehow different. while it might improve things for a carb'd jeep, it doesn't do the tundra any favors. there are quite a few expensive, glossily advertised aftermarket products that gloat over double-digit hp gains for little cost--the placebo effect also led to claims that the FIPK helped, until the 3rd party dyno results came out and proved it nearly useless. people only see the pinstripes, knowhutimean? people still think tinfoil hats and homeopathic "remedies" work, too.

-sean

DJ · #3 (**permalink**) 09-08-2003, 02:25 PM

It's sole function is to shrink the membranes around your wallet. It does that quite well.

Have you EVER seen ANY objective, verifiable, scientific data that supports the notion that it improves engine performance? I haven't. The manufacturers don't provide any. Wonder why?

If it did improve engine performance, do you suppose Toyota would make the throttle body a bit longer and thereby incorporate it, which might cost them all of a dollar?

Save your money. Just tell yourself, "Yeah, it's running better now and has more power!" You'll get precisely the same results and it's free.

Stooge · #4 (**permalink**) 09-08-2003, 03:19 PM

I agree that intake mods such as throttle body spacers are a waste of money on modern engines. Take a good look at the intake manifold on these V8s. Quite a long path to say the least, with alot of testing and engineering to boot!! Save your money, and put the cash into quality maintenance parts and fluids where you'll get real returns for your hard earned dollars.

PointCrossed · #5 (**permalink**) 09-08-2003, 03:46 PM

Well you al have proven your point. What about that Tornado thing it has been proven but just to increase gas mileage. Does that really work on Tundras??

v8Toilet · #6 (**permalink**) 09-08-2003, 04:05 PM

Read Consumer Reports! They tested those devices and they either didn't make a difference or cost power. The twisty tornado scam was one of them.

Don’t get taken!

2theedge1974 · #7 (**permalink**) 09-09-2003, 09:02 PM

You will not know the difference if you put a tbs on. Your money is better spent throwing on some headers. at least you will be able to tell a difference. I have both the tbs and headers. If I didnt have the headers, I would have never known the tbs was there. Except for the hissing noise it makes.

2theedge1974 · #8 (**permalink**) 09-10-2003, 03:10 PM

But the intakes rob your low end torque. The trucks will fly after 4000rpm's but who wants to wait that long to feel the power. Go with headers and new exhaust. You will have decent horsepower gains for the money you spend.

PointCrossed · #9 (**permalink**) 09-10-2003, 06:57 PM

Quote:

Originally Posted by 2theedge1974

But the intakes rob your low end torque. The trucks will fly after 4000rpm's but who wants to wait that long to feel the power. Go with headers and new exhaust. You will have decent horsepower gains for the money you spend.

Thanks to all that replied your info is a great help to all us new to modifying our trucks.

I do not have any mods but the K&n Drop in Filter and that actually gave some improvment. but I bet that ram air will also help especially at highway speeds.

2theedge1974 · #10 (**permalink**) 09-10-2003, 09:01 PM

hope you have good luck in the mods you may do to your truck. To me nothing is worth it because now mytruck is sitting at the dealership with problems they cant figure out. Just dont believe everything you read.

tremo · #11 (**permalink**) 09-10-2003, 09:40 PM

Quote:

Originally Posted by 2theedge1974

But the intakes rob your low end torque. The trucks will fly after 4000rpm's but who wants to wait that long to feel the power. Go with headers and new exhaust. You will have decent horsepower gains for the money you spend.

Note that if you look at the dyno results on the K&N FIPK for the Tundra the HP and Torque gains start at 2700 rpm and peak at 5200 RPM:

http://www.knfilters.com/FIPK/charts/57-9014.jpg

So, the "loss in low-end torque" is before ~2800 RPM and you do get gains way before ~4000 RPM. Just wanted to clear up any confusion...

Oh, to plug my own product

, from the link to the Ram Air Performance System under the TS Store I note:

* Added performance for K&N FIPK and AirCharger user's: One theory regarding the degradation of performance when installing the K&N Fuel Injection Performance Kit (FIPK) or AirCharger on the 4.7L V8 is that despite the provided heat shield, the FIPK draws-in too much hot air. This in turn causes the Mass Air Flow (MAF) sensor to richen the air/fuel mixture, thus resulting in a loss of torque and overall performance. By utilizing the FIPK/AirCharger version of the RAP System, which adds a constant flow of directed, freshly “charged” outside air (and does not require any modifications to your vehicle), the K&N FIPK or AirCharger will now perform at the level most users expect.

If you have any questions about the RAP System, fell free to send me a PM...

Seee-ya!

Jim.