Throttle Body Mod

emkiii · 01-21-2007, 02:29 PM

Is there any noticiable gain in torque/hp with a FAST 90mm throttle body?
I have SW LTs and catbacks and LPE CAI. No other mods on 06 LS2.
If I go with FAST 90mm, do I have to change the intake manifold too or will it bolt on?
Throttle body is over $400, manifold over $800. Don't want to spend if no real gains.
Thanks.

242379 · 01-21-2007, 09:04 PM

LS2 has 90 mm TB stock, I'm not sure you'll see any gains.

LYNMUP · 01-22-2007, 11:52 AM

You would be wasting the money on the TB. I have the FAST intake and it's noticeable. I only got it cause the insurance was replacing my factory intake manifold so I only paid half the price. If you can afford the FAST intake then it's nice, especially if you are going to get a bigger cam or force induction.

Ozzhead · 01-22-2007, 02:30 PM

I dont even think you can use that on the 05/06 since they are drive-by-wire and not drive-by-cable like the LS1s. But the manifold you can go with with some modifaction for the LS2.

anmracing · 01-23-2007, 10:43 AM

Quote:

Originally Posted by LYNMUP

You would be wasting the money on the TB. I have the FAST intake and it's noticeable. I only got it cause the insurance was replacing my factory intake manifold so I only paid half the price. If you can afford the FAST intake then it's nice, especially if you are going to get a bigger cam or force induction.

Just out of curiosity, why did the OE intake have to be changed and why was the insurance taking care of it? Just wondering.

LYNMUP · 01-24-2007, 02:47 PM

Quote:

Originally Posted by Ozzhead

I dont even think you can use that on the 05/06 since they are drive-by-wire and not drive-by-cable like the LS1s. But the manifold you can go with with some modifaction for the LS2.

His above post showed a 06 LS2!

LYNMUP · 01-24-2007, 02:49 PM

Quote:

Originally Posted by anmracing

Just out of curiosity, why did the OE intake have to be changed and why was the insurance taking care of it? Just wondering.

WELL! I have a little accident as where I damaged mostly my hood and the intake manifole as well as core support and associated hardware. Cost of the stock manifold was $400+. The repair shop said if I wanted to upgrade to anything, now would be the time since I only had to pay the difference for the parts. The difference was $413. Also that's how I got the Gravana Ram Air hood and SAP front grill and bumper (the hood was $70 cheaper compared to stock). All in all, I paid $1086 when I picked up the car and $250 of that was the deductible. Not bad for the amount of money I saved.

Hanks06gto · 02-07-2007, 08:39 AM

you can replace the stock TB but there is some other hardware to be changed and i believe you need to reprogram the computer because the T/C is tied into the drive by wire setup. but dont qutoe me on that, ive seen ls2 engine build ups with the Fast 90mm and i believe that is what was done. power gains are 10-15hp due to the different angle the fast is, it allows better air flow