I've heard varying opinions. What is a dependable HP expectation from a "bolt-on" TT install. Engine is bone stock, with Mopar race w/ highflow cats. RSI will be doing the install/tune. Thanks.
I concur with the above. A local friend has an RSI TT package that puts down 700 RWHP. I am also in the process of producing a package, but it will be the 1000+ RWHP level. I have to say, after going through the Viper drivetrain at levels far beyond what any normal person would, there is NO WAY I would trust the OEM bottom end, rear differential, or halfshafts at even 700 RWHP.
Alot of high HP TT vipers are using stock manifolds, actually most are that i know of.
Bingo. Flow through the headers of a TT car is nowhere near as important as a NA car. TT cars cannot scavenge the cylinders to gain major power like an NA, as the runners are under pressure- Hence, header design becomes a virtually moot point. SRT-10 headers OEM are atually very good, not nearly as restictive as Gen-1 and 2, with no wild kinks or bends and a relatively good size primary. This is the main reasons that tuners are sticking with them, or at least the upper sections of them... why make a $2500 change that is going to net 10 horsepower and slow down the build process...? it doesnt make sense to do it.
No headers, just the stock manifolds modified for the TT kit. I've heard that the biggest weak part of the motor is the pistons. With a change to forged, what is a dependable hp expectation. I realize the TT kit is capable of making much more hp than a "stock" engine with forged pistons will accommodate. I guess I'm hoping for more hp than the typical Paxton bolt-ons out there. There are a few guys locally with an S/C setup, but not many with a TT.
Bingo. Flow through the headers of a TT car is nowhere near as important as a NA car. TT cars cannot scavenge the cylinders to gain major power like an NA, as the runners are under pressure- Hence, header design becomes a virtually moot point. SRT-10 headers OEM are atually very good, not nearly as restictive as Gen-1 and 2, with no wild kinks or bends and a relatively good size primary. This is the main reasons that tuners are sticking with them, or at least the upper sections of them... why make a $2500 change that is going to net 10 horsepower and slow down the build process...? it doesnt make sense to do it.
Do you have to use a return oil pump for the turbos to drain back to the oil pan when using the stock manifolds?
A TT system that utilizes the stock headers should cost ALOT LESS than systems that offer turbo headers. The starting prices for TT systems that don't have custom headers included shouldn't be the same or more than systems that do offer better quality.
Last edited by SVS Turbo : February 13th, 2006 at 09:30 AM.
The system that I'm purchasing is a used RSI kit. When it was installed originally they used the return oil pump. With the new install, RSI is updating it to their current specs, eliminating that need...I think. I'll have to verify that. The individual I purchased it from is having Heffner remove everything from RSI. From what I understand, he wants really big HP and is having Heffner do it this time around. For what I paid for the RSI kit and the install, I could not have done a S/C for less. For me, the TT option was a no-brainer. RSI is saying I should expect about 680 RWHP safely on my stock motor.
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