APS Twin-Turbo Installed (photos)
07-10-2007, 06:48 PM
#1
APS 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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07-11-2007, 06:39 AM
#9
Looks good man. To bad you didn't do the install yourself? I just finished up an APS install for a customer of mine. We did a Tex twin disk clutch, a SW 3" catback, and an APS twin fuel pump system. At the tuners now, and should have #'s by next week. He is adding a Meth injection kit.
Came out nice. Surprised you stayed with the MAF. We are doing a speed density tune.
Difftechnics one piece 200 mph 800 HP drive shaft, Harrop diff cover, and a stub to hub soon.
Came out nice. Surprised you stayed with the MAF. We are doing a speed density tune.
Difftechnics one piece 200 mph 800 HP drive shaft, Harrop diff cover, and a stub to hub soon.
07-11-2007, 10:53 AM
#13
no need to lose the MAF or add a huge fuel system. My goals for this car aren't to push it to the limits, it is just a quick daily driver with stock drivability.
Oct03GTO, that sounds like a cool build up! It is obvious our goals for these cars are much different
Oct03GTO, that sounds like a cool build up! It is obvious our goals for these cars are much different
07-11-2007, 05:16 PM
#16
Originally Posted by Nine Ball
no need to lose the MAF or add a huge fuel system. My goals for this car aren't to push it to the limits, it is just a quick daily driver with stock drivability.
Oct03GTO, that sounds like a cool build up! It is obvious our goals for these cars are much different
Oct03GTO, that sounds like a cool build up! It is obvious our goals for these cars are much different
This customer wanted to be able to add more performance without having to deal with all the fuel system, or exhaust again.Next year, we are forging a stock cube LS2, porting the heads, adding a mild FI cam, and putting in a built trans. This should yeld him about 14 psi on a safe rune. And more if he chooses.
Till then, I have my own plans for bigger cubes and FI.
07-11-2007, 10:01 PM
#17
Staging Lane
Join Date: Feb 2006
Location: Pearland, Tx
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Originally Posted by radkon
Very stealth. I'm sure you'll surprise quite a few people with that setup, at least until they hear the whine of the turbos 
