APS GTO Twin-Turbo Installed (photos)
07-10-2007, 06:48 PM
#1
APS GTO Twin-Turbo Installed (photos) 
The LS1TECH project GTO now has a pair.
I've just picked up the 2006 GTO from having the APS twin-turbo (tuner kit) installed over at MTI here in Houston. Chris and Jayson did an excellent job on the installation and dyno tuning, as usual. Thanks guys!
Overall, I'm very impressed with this APS kit, I believe the smile is still stuck on my face after driving it for the first time today. Gotta love the way twin turbos spool and make all kinds of cool sounds. I loved this GTO even before modifying it, but now I really love this car. It needed a good kick in the pants! The car was 100% unmodified before putting the turbo system on, and is still 100% stock other than the turbo system, 60# fuel injectors, and a KB Boost-A-Pump. Yes, stock exhaust system, stock internal LS2, stock clutch, etc.. The turbo system was installed as-is, out of the box with the preset factory boost settings (6.5 psi).
Dyno Results: 540 rwhp & 534 ft-lbs SAE Corrected @ 6.5 psi on 93 Octane
The car still drives/sounds completely stock until you floor it. It is very quiet, and even the turbo system is very quiet. The blowoff valves exit into the intake tube, and the wastegates exit into the exhaust system. You get a faint hint at the blowoff valves in sequence when you floor it and shut the throttle. Turbo whine is there, but minimal. The car has very little lag below 3,000 rpm, and hardly any lag after 3500 rpm. Power comes on very quickly around 3000 rpm and just pulls and pulls. It was important to me to keep this car quiet and enjoyable as a daily driver, we even put over 3,000 miles on it last month for the Hot Rod Magazine Power Tour. I didn't want the hassles of loping cams, surging low rpm drivability, or loud exhausts and rattles. The car is flat out nice to drive, now it is even quick too.
Anyways, here are some photos of the install, they speak for themselves.
Here is how the APS kit looks by itself:
That is just a fancy cold air intake tube, the car is stock
Here is an APS billet blowoff valve. Outlet goes into the intake tube:
The front-mount intercooler is coated black, very stealth!
The APS kit tucks in high, not a single inch of ground clearance lost:
Dual TIAL wastegates exit into the exhaust system after the turbos
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07-10-2007, 07:59 PM
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Join Date: Jun 2007
Location: Allen, TX
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LOL @ Stealth Intercooler... the two spooling turbos aren't going to give you away or anything 
Great looking car man - I looked everywhere, but what was the price tag on that kit?
Great looking car man - I looked everywhere, but what was the price tag on that kit?
