4.7 performance

[Boynamedsue]

I just bought a 2007 rcsb SR5 tundra about a month ago. It has 500 miles on the clock so its still on the break in tune so im not looking for anything right away. As far as performance and things go im pretty well versed, I write computer tunes for speed density motors all the time. I know my way around things pretty well, and kinda have an idea of what works an what doesnt. I havent seen a whole lot of performance parts available as of yet for the 2007 so i had some questions on swapping parts. many other trucks parts swap over from the bigger engine to the smaller engine(6.1 hemi to 5.7 hemi, and 6.0 chevy to 5.3). Im pulling a race car with the truck the truck so i need a little bit more power. I dont know if anyone knows for sure but would things like the 5.7 throttle body and exhaust manifolds swap? throttle response is pretty decent but the bigger throttle body would help comsiderably with that.

I want the truck to stay looking stock hence the use of the stock manifolds, plus the flow numbers are pretty amazing as is. Im eventually going to write a tune for the truck as well to accomidate stock parts with highr octane fuel, so i can remove the knock sensor and pick up a little power there. If anyone has an information on parts swap or available parts i would appreciate it alot. Thnkas for the help

Nick

[NOLA_1906]

Originally Posted by Boynamedsue

I want the truck to stay looking stock hence the use of the stock manifolds, plus the flow numbers are pretty amazing as is. Im eventually going to write a tune for the truck as well to accomidate stock parts with highr octane fuel, so i can remove the knock sensor and pick up a little power there. If anyone has an information on parts swap or available parts i would appreciate it alot. Thnkas for the help

Nick

How do you plan on "writing a tune" for the truck? How do you plan on delivering the tune? Unless you have cracked Toyota's encryption or you're using a stand alone, I don't see how you can accomplish this.

[Boynamedsue]

Writing the tune isnt very hard as long as you understand fuel, air and spark tables. I mean alot of things will vary when writing the tune, for example atmospheric pressures, type of fuel you plan to use and air temperatures. you can use general specifcations for those things based on your areas climate and elevation. writing tunes isnt too terribly difficult.
As far as encryption codes you can buy those, im sure these arent for sale yet but eventually they will be. some dealerships will not reflash computers because of the risk envolved so any individual with the training and equipment can be certified by the company to do that and is given those codes for a small fee. if you have the ability to do so you can write tons of tunes and sell the software. as far as delivery any mobile device like a laptop or some cell phones with PC capabilites can communicate with a Pcm with the proper equipment. Newer vehicles operate on the CAN newtwork as opposed to OBD2 so that eqipment isnt for sale to the public. Ill wait for it to come out im in no big hurry to write the tune for it i dont drive a whole lot so by the time get past the break in tune it will be available. Anything and everything is for sale its just how long you wait and what you want to pay for it.
A friend of mine payed for all his equipment and everything else need for under 3 grand and he reflashes and tunes PCMs for saturns, charges 200 bucks a pop for a flash 400 for a tune. he does most of his work for dealerships so his equipment has more than paid for itself.

[NOLA_1906]

I completely understand what is involved in writing a tune. All I'm saying is that companies like GM and Ford releases their codes, but Toyota does not, so you won't be buying those anytime soon. You would have to crack the code yourself or wait for someone else to do it in a year or two from now. Even the dealership isn't able to customize flashes. The flashes are simply downloaded from Toyota to the dealership and to your car. The techs can't hook up a laptop and whip up a custom tune and flash your PCM. It's not that simple. If you were running a stand alone like a Motec or Haltech, then yes you could easily manipulate AFR's and timing advance/retard among other things. I owned a Mazda RX8 previously and its PCM was similar to Toyota's. Encryption worthy of Fort Knox applications and Mazda did not release codes. The only two companies that were able to reflash the PCM, after over four years, was Racing Beat, who is very close to Mazda, and Cobb tuning, a highly respected tuner with deep pockets and amazingly engineered hardware and software. I'm sorry, but reflashing the stock PCM will not be a mom and pop affair. I hope that you can prove me otherwise and relaese an application for all of us to use, but I'm definitely not holding my breath.

[dafoot]

Just wondering why you did'nt get the 5.7? The 4.7 is a very good engine. But if you are looking for pulling power, seems you should have bought the 5.7. Just wondering.

[Boynamedsue]

I got a good deal on the truck thats why i went with the 4.7. Plus i blew the trans up in my old truck. After incentives and what i talked them down i payed 8grand under sticker. I cant complain, they went down so much becasue they were liquidating 2007s to make room for the new model year. I cant complain about that good of a deal.

As for the tune, I agree completely that the codes will be hard to get and they wont just sell them to anyone. Im banking on something happening to the truck, like what happened to the Supras. There were so many issues with the Engine management system that they were forced to sell codes to shops in order to deal with the volume of computer reflashes. With those codes to reflash you can write and install tunes. Now im not saying its going to be within the next couple weeks it may be a month it may be a year, but eventually they will be released somewhere that they can be obtained. They are leary about selling the codes to newer cars becasue of the switch to the CAN system. Emmission laws have gotten crazy so more efficent system was needed hence the switch from OBD2. I like the ability to write a tune and be able to put it on a Sidekick or iPhone or something. its easier to deal with than a laptop, and you dont have bulky equipment around everywhere. Once codes become obtainable you wont have to worry about the new F-150.

[pagemaster]

Originally Posted by Boynamedsue

I dont know if anyone knows for sure but would things like the 5.7 throttle body and exhaust manifolds swap? throttle response is pretty decent but the bigger throttle body would help comsiderably with that.

I

Nick

You should of just bought the 5.7.

[Someguy123]

Originally Posted by Boynamedsue

Writing the tune isnt very hard as long as you understand fuel, air and spark tables. I mean alot of things will vary when writing the tune, for example atmospheric pressures, type of fuel you plan to use and air temperatures. you can use general specifcations for those things based on your areas climate and elevation. writing tunes isnt too terribly difficult.
As far as encryption codes you can buy those, im sure these arent for sale yet but eventually they will be. some dealerships will not reflash computers because of the risk envolved so any individual with the training and equipment can be certified by the company to do that and is given those codes for a small fee. if you have the ability to do so you can write tons of tunes and sell the software. as far as delivery any mobile device like a laptop or some cell phones with PC capabilites can communicate with a Pcm with the proper equipment. Newer vehicles operate on the CAN newtwork as opposed to OBD2 so that eqipment isnt for sale to the public. Ill wait for it to come out im in no big hurry to write the tune for it i dont drive a whole lot so by the time get past the break in tune it will be available. Anything and everything is for sale its just how long you wait and what you want to pay for it.
A friend of mine payed for all his equipment and everything else need for under 3 grand and he reflashes and tunes PCMs for saturns, charges 200 bucks a pop for a flash 400 for a tune. he does most of his work for dealerships so his equipment has more than paid for itself.

well things are changing. the reason companies are locking up their computers. is because they don't want you messing with the tune, they provided you. they are worried about warranty fraud. they provided you with a warranty, and a tune that helps things last the course of the warranty. if you start messing with this stuff, the vehicle can fail before your warranty. and then toyota is stuck picking up the cost for something you broke on your own.

so i dont think you will be seeing toyota selling off their encryption codes. more than likely, you will have to wait for an aftermarket company to hack it. and then build us a tuner. lets hope it doesnt take long.

[Burger Steak & Eggs]

This may take longer than any of us want. In the interim I would look at piggypack / sensor intercept schemes such as URD or Unichip. I am not sure if even they have anything for the Gen IIs yet.

[Someguy123]

Originally Posted by Burger Steak & Eggs

This may take longer than any of us want. In the interim I would look at piggypack / sensor intercept schemes such as URD or Unichip. I am not sure if even they have anything for the Gen IIs yet.

personally im quite willing to wait for something. a little bit more power would be nice. but its not like i wanna race. racing a truck is kind of like being in the special olympics. even if you win, you are still retarded. racing is what cars are meant for. trucks are for towing junk around.

as long as the computer isnt locked up too bad. it shouldnt take very long for a proper tuner. i cant imagine a computer that was locked up worse than my car. and it only took 2 years for a tuner for that. the tundra is in its second production year now. so it shouldnt be long.