APS builds 557hp twin-turbo setup for Pontiac G8 GT

SVTKAR3 · 05-12-2008, 03:17 PM

Posted May 12th 2008 2:33PM by Damon Lavrinc
Filed under: Aftermarket, Tuners, Sedans/Saloons, Pontiac, Holden, HSV

Click above for a gallery of the turbocharged APS HSV Commodore.

APS is in the business of making power and that's exactly what they've done for the new Pontiac G8 GT and its Aussie-spec sibling, the Holden Commodore HSV. The tuner's Stealth Intercooled turbocharger setup uses two water-cooled turbos mounted deep into the engine bay, just ahead of the transmission, to ensure underhood temps are kept in check – road debris be damned. According to APS, the system is a straightforward, bolt-in affair, utilizing a right-sized, aluminum, air-to-air intercooler, seven pounds of boost and a pair of TIAL 38mm external wastegates to bleed off exhaust gases and optimize throttle response. While APS hasn't installed the system on a Pontiac G8 GT yet, they've strapped its own blown HSV (with a three-inch cat-back exhaust) onto the rollers of a Dyno Dynamics dyno and produced 557 hp and 583 lb.-ft. of torque while running 93-octane. Pricing hasn't been announced yet, but considering how impressed we were with the standard G8 GT, this setup has the potential to redefine the bang-for-the-buck quotient in the segment.

[Source: APS via FreshTarmac]

GMusa · 05-12-2008, 03:19 PM

Too bad the G8 GXP didnt get 557hp!!

Michael_S · 05-12-2008, 04:40 PM

Sounds like fun. 0-60 mph in three sets of tires.

Boi350Sierra · 05-13-2008, 03:58 AM

nice i would mind that as a daily driver

CaptainDan · 05-13-2008, 09:23 AM

How much?

Not for the body mods, just the engine/ exhaust mods.

ChevroletTough · 05-13-2008, 10:43 AM

good thing im wearing new shorts.....

haha

jaywestfall · 05-13-2008, 11:19 AM

Outstanding-Let the aftermarket parts party begin! Reckon the boost tones would give it away in a race with the unsuspecting souls out there? But then again, this car doesn't exactly look like a sleeper.

ChevroletTough · 05-13-2008, 01:00 PM

Quote:

Originally Posted by jaywestfall

But then again, this car doesn't exactly look like a sleeper.

right you are! This car is just plain mean!

ogg vorbis · 05-13-2008, 01:17 PM

i thought they had developed a v6 kit...this is pretty standard results.

557 whp is right there with the LS9, on 3.5 psi less. the turbo oil drain is a little low. they say water cooled, but i didn't see ball bearings. it's a mitsu-based turbo, .84 turbine a/r, .65 a/r compressor...nothing more.

it'll be quieter than a standard gt at cruise/idle. the bov is vented to the intake at low openings, for quiet operation, and to the atmosphere at high openings, a little noise.

Sal Collaziano · 05-13-2008, 02:00 PM

Anyone want to take a guess at what a brand new G8 GT WITH the twin turbo installation might cost when all is said and done?

Hugger Z · 05-13-2008, 03:40 PM

I can vouch for APS making a good kit. I have their kit on my car and it has been reliable and daily driven. Cost depends upon when you get in on a purchase for them. And what supporting mods you need to work with the kit. I had to buy a few items to support the power levels. Those numbers are pretty good though. That makes it definitely one fun family hauler.

Robert Ryan · 05-13-2008, 04:05 PM

They are the same company that built the 1000hp daily driver Ford Falcon Six.

E. Haskell · 05-13-2008, 04:16 PM

Quote:

Originally Posted by Sal Collaziano

Anyone want to take a guess at what a brand new G8 GT WITH the twin turbo installation might cost when all is said and done?

Around $42-44k would be my guess. $30-32k for the car and the rest for the turbo kit/installation.

bballer113 · 05-13-2008, 04:26 PM

Is it just me or does that power output seem alittle on the low side. For two turbo's i would be expecting atleast 600 hp and tq after looking at how much power you are starting with.

Ultra Magnus · 05-13-2008, 04:31 PM

Quote:

Originally Posted by bballer113

Is it just me or does that power output seem alittle on the low side. For two turbo's i would be expecting atleast 600 hp and tq after looking at how much power you are starting with.

Considering they are quoting HP and TQ at the wheels, add 10-15% for driveline losses and you have your 600HP.

05-12-2008, 03:17 PM	#1 (permalink)
SVTKAR3 3.8 Liter Supercharged V6 Join Date: Oct 2005 Location: South Jersey Drives: '88 Lincoln TownCar. Posts: 578	APS builds 557hp twin-turbo setup for Pontiac G8 GT Posted May 12th 2008 2:33PM by Damon Lavrinc Filed under: Aftermarket, Tuners, Sedans/Saloons, Pontiac, Holden, HSV Click above for a gallery of the turbocharged APS HSV Commodore. APS is in the business of making power and that's exactly what they've done for the new Pontiac G8 GT and its Aussie-spec sibling, the Holden Commodore HSV. The tuner's Stealth Intercooled turbocharger setup uses two water-cooled turbos mounted deep into the engine bay, just ahead of the transmission, to ensure underhood temps are kept in check – road debris be damned. According to APS, the system is a straightforward, bolt-in affair, utilizing a right-sized, aluminum, air-to-air intercooler, seven pounds of boost and a pair of TIAL 38mm external wastegates to bleed off exhaust gases and optimize throttle response. While APS hasn't installed the system on a Pontiac G8 GT yet, they've strapped its own blown HSV (with a three-inch cat-back exhaust) onto the rollers of a Dyno Dynamics dyno and produced 557 hp and 583 lb.-ft. of torque while running 93-octane. Pricing hasn't been announced yet, but considering how impressed we were with the standard G8 GT, this setup has the potential to redefine the bang-for-the-buck quotient in the segment. [Source: APS via FreshTarmac] __________________ 2008 WORLD CHAMPIONS PHILADELPHIA PHILLIES!!!

05-12-2008, 03:19 PM	#2 (permalink)
GMusa 6.0 Liter Vortec V8 Join Date: Mar 2007 Location: U.S.A!!! Drives: 1998 Ford Taurus SE Posts: 1,915	Re: APS builds 557 hp twin-turbo setup for Pontiac G8 GT. Too bad the G8 GXP didnt get 557hp!! __________________ -JD

05-12-2008, 04:40 PM	#3 (permalink)
Michael_S 6.0 Liter LS2 V8 Join Date: Jul 2004 Posts: 4,912	Re: APS builds 557 hp twin-turbo setup for Pontiac G8 GT. Sounds like fun. 0-60 mph in three sets of tires.

05-13-2008, 03:58 AM	#4 (permalink)
Boi350Sierra 3.9 Liter V6 Join Date: Oct 2004 Location: Queen Creek, AZ Drives: Black GMC SIERRA Ext Cab Posts: 854	Re: APS builds 557 hp twin-turbo setup for Pontiac G8 GT. nice i would mind that as a daily driver

05-13-2008, 09:23 AM	#5 (permalink)
CaptainDan 3.6 Liter V6 Join Date: Mar 2007 Location: Michigan Drives: '05 GTO Posts: 1,011	Re: APS builds 557hp twin-turbo setup for Pontiac G8 GT How much? Not for the body mods, just the engine/ exhaust mods. __________________ '05 GTO 6.0 Liter LS2 400 horsepower Anything less is just a hamster on a wheel.

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05-13-2008, 10:43 AM	#6 (permalink)
ChevroletTough 5.3 Liter Vortec V8 Join Date: Oct 2005 Location: Menomonie, Wisconsin Drives: 1989 Silverado LS 1995 Monte Carlo Z34 Posts: 1,342	Re: APS builds 557hp twin-turbo setup for Pontiac G8 GT good thing im wearing new shorts..... haha __________________ "Mess With The Bull and You Get the Horns!" 1989 Silverado 229,xxx Miles *(updated mileage: 10/1/08)* "Drive what you want, appologize to no-one" - Nailhead425

05-13-2008, 11:19 AM	#7 (permalink)
jaywestfall 3.5 Liter V6 Join Date: Nov 2003 Location: Houston, TX Drives: 1984 Pontiac Bonneville Posts: 268	Re: APS builds 557hp twin-turbo setup for Pontiac G8 GT Outstanding-Let the aftermarket parts party begin! Reckon the boost tones would give it away in a race with the unsuspecting souls out there? But then again, this car doesn't exactly look like a sleeper. __________________ Pontiac = Rear Wheel Drive Next ride: 2010 Pontiac G8 GT Member of The: I will never buy a Japanese car in my life Club I certify no Death to Pontiac has been used in this post (nor will it ever be).

05-13-2008, 01:17 PM	#9 (permalink)
ogg vorbis 3.8 Liter V6 Join Date: May 2005 Location: Toronto, ON Drives: 1999 Buick Regal GS caught fire Posts: 422	Re: APS builds 557hp twin-turbo setup for Pontiac G8 GT i thought they had developed a v6 kit...this is pretty standard results. 557 whp is right there with the LS9, on 3.5 psi less. the turbo oil drain is a little low. they say water cooled, but i didn't see ball bearings. it's a mitsu-based turbo, .84 turbine a/r, .65 a/r compressor...nothing more. it'll be quieter than a standard gt at cruise/idle. the bov is vented to the intake at low openings, for quiet operation, and to the atmosphere at high openings, a little noise.

05-13-2008, 02:00 PM	#10 (permalink)
Sal Collaziano 4.4 Liter Supercharged Northstar Join Date: Jan 2003 Location: West Palm Beach, Florida, USA Drives: 2005 Cadillac Escalade ESV, 2007 Chrysler 300C Posts: 2,094	Re: APS builds 557hp twin-turbo setup for Pontiac G8 GT Anyone want to take a guess at what a brand new G8 GT WITH the twin turbo installation might cost when all is said and done? __________________ --> Millions of car and truck videos! --> allcarvideos.com __________________ Cadillac Magazine / Buick / Pontiac / Hyundai Genesis / Chevy

05-13-2008, 03:40 PM	#11 (permalink)
Hugger Z Walking Join Date: Nov 2005 Posts: 14	Re: APS builds 557hp twin-turbo setup for Pontiac G8 GT I can vouch for APS making a good kit. I have their kit on my car and it has been reliable and daily driven. Cost depends upon when you get in on a purchase for them. And what supporting mods you need to work with the kit. I had to buy a few items to support the power levels. Those numbers are pretty good though. That makes it definitely one fun family hauler. __________________ 1999 Hugger Orange Z-28 M6 Twin Turbo Current Mods: APS Twin Turbos, Black 18" C6 Z06 Wheels, LS7 Clutch, Pro 5.0, Tinted Windows, Custom Exhaust, Orange Calipers, ZAINO!!, KVR Cross Drilled Front Rotors & Carbon Fiber Pads, BMR K-Member, Tq Arm Rel Brkt, STB & LCA's, Orange Halo's & HID's Future Mods: C6 ZO6 Brake Upgrade In three words I can sum up everything I've learned about life; It goes on. -Robert Frost

05-13-2008, 04:05 PM	#12 (permalink)
Robert Ryan 5.3 Liter Vortec V8 Join Date: Oct 2006 Posts: 1,456	Re: APS builds 557hp twin-turbo setup for Pontiac G8 GT They are the same company that built the 1000hp daily driver Ford Falcon Six.

05-13-2008, 04:26 PM	#14 (permalink)
bballer113 3.8 Liter V6 Join Date: Dec 2003 Location: Dallas. Texas Drives: 07' Sunburst Orange Cobalt SS/SC Posts: 313	Re: APS builds 557hp twin-turbo setup for Pontiac G8 GT Is it just me or does that power output seem alittle on the low side. For two turbo's i would be expecting atleast 600 hp and tq after looking at how much power you are starting with. __________________ Current ride: 07' Sunburst Orange Cobalt SS/SC

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