Gxp modifications - Pontiac G6 Forum
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post #1 of 4 (permalink) Old 10-01-2013, 10:19 PM Thread Starter
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Join Date: Oct 2013
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Gxp modifications

Hi guys. New to the club. Just picked up an 08 4 door g6 gxp. I like the car just want more out of it. Any good performance modifications that are legitimately worth getting for the car. Anyone change the gear ratios or anything.

Also any deep rumble exhaust sounds? I guess looking to hear from other gxp owners. Any ideas pics of the mods would help. Thanks
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post #2 of 4 (permalink) Old 10-01-2013, 10:37 PM
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Posts: 447
Lots of modifications available, suspension, engine and exhaust... I know you can change the gear ratios on the 4t45e, not sure about the GXP though

My Progression

Mods: BMD Performance Adjustable Front End Links, BMD Performance Stainless Steel Brake Lines, Koni Yellow Sport Dampers, Pedders Lowering Springs, Brembo Upgrade, Racingline STB, Custom Intake, 8000k Lowbeam HIDs, 10000k Foglight HIDs, Badge & Doorsill Overlays, GM G6 Logo Mats, Blacked Out Window Trim, Blacked Out Grills, Pioneer Headunit, 2 10" Kenwood Subs
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post #3 of 4 (permalink) Old 10-02-2013, 07:27 AM Thread Starter
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Well ya there are lots of mods for almost any vehicle. Ha ha looking for specifics on what guys/gals have put on and what has been the best they have found. I am an avid snowmobiler and I have gone through multiple trial and error on performance parts. So I am looking to skip a few steps thanks for the input though
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post #4 of 4 (permalink) Old 10-03-2013, 04:58 PM
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intake, custom intake manifold, catless headers, exhaust, cams, forged rods, forged pistons underdrive pully, tune, definitely no lack of mods for the 3.6 headers cost around 1100, and gain about 25hp, unless you don't care about spending a LOT of money id just leave it to intake, headers, exhaust and a tune, and if you have your transmission tuned well (the TCM is inside the transmission so wams who most people use, wont do it) the trans tune will gain a LOT most people claim that when I tune their transmission in their GXP/ other epsilon 3.6 car that it makes the biggest difference of everything they've done lol

2008 Pontiac G6 GT Dark Gray Metalic
Bought Feb 28 2009 with 24k miles now has 130k miles RIP Baby death snowplow 1-30-11

Carbon Black Metalic 2009 G6 GXP Coupe
Bought Oct 8 2010 with 35 miles

Mods so far: every single performance mod and a whole lot more, fastest NA G6

1/4 mile: [email protected] 109.23

Performance Red Metalic 2009 G6 GXP coupe
bought june 29 2012 with 3400 miles

Mods: RACE CAR- full race fuel setup and in the process of converting to RWD with a 6spd manual trans
1/4 mile: [email protected] 101.95
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