Pontiac G8 2008-09 & Chevrolet SS 2014+ LSX based RWD 4-door sedans

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Old 09-05-2009, 06:24 PM
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ok i ran my g8 gt last nite for the first time i ran a 14.4 and then a 14.3 both at 100 mph i dont know what the problem is or what yea i live in south texas and it was high humidity and around 90 degrees outside does that have anything to do with it or what? help me out too slow..
Old 09-05-2009, 07:34 PM
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60 foot?
Old 09-05-2009, 07:47 PM
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track condition weather Da all have a huge part in it...
Old 09-06-2009, 01:00 AM
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the 60 foot time for the 14.3 was a 2.234 and for the 14.4 was 2.257 and help?
Old 09-06-2009, 08:00 AM
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you will be in the 13's if you get that 60' down to a 2.0. I've run a 1.96 60' with the stock 19" potenza's for reference. Sounds like it was a hot and humid which also hurt your times.
Old 09-06-2009, 09:50 AM
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Whats your elevation?
Old 09-06-2009, 03:41 PM
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dude were so low down here damn near sea level. so what would get my 60 foot time better would the vararam intake help that? cause ima wait to get a tune.
Old 09-06-2009, 03:42 PM
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should i power brake off the line of jus put it down when the tree hits green?
Old 09-07-2009, 12:10 AM
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definetly power brake as much as you can withoutout spinning. this should should get you to a 2.0 without any money.
Old 09-07-2009, 09:09 AM
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Originally Posted by itsslow98
definetly power brake as much as you can withoutout spinning. this should should get you to a 2.0 without any money.
Depends on the car. Stock G8's seem to like being nailed off idle as when you try to stall them, the TQ management is very intrusive.
Old 09-07-2009, 10:32 AM
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My best 60' on stock 18s with RSAs is 1.94. Loaded to 1k with a 1/4 tank or less gas.
That was with a DA around 1800
Old 09-07-2009, 12:01 PM
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my 1.98 was done launching off idle...stock 19's at 34psi
Old 09-07-2009, 12:48 PM
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My best 60' was 2.216 - 1/8 8.8 - I havent tried on Idle I will try that next. 60' ft on
G8's are usually bad - I've seen some guys do a 60' 2.+ and get 12's on the 1/4 mile?? weird!! The numbers on these 4 door monsters are weird it all depends on your mods.
1/8 mile tracks do these cars no justice unless you have gears/converter/street slicks.
Old 09-07-2009, 05:43 PM
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aite well thanks guys i guess i will jus play with it this friday at the track i jus dont understand why i would run a 14.3 when i have already put the full corsa exhaust on it that comes with the x pipe and stuff i jus dont know why i am not in the thirteens.
Old 09-07-2009, 06:59 PM
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i suspect that just as with a GTO a catback isn't doing anything for you and is just an expensive sound mod until you get a lot higher up in HP. get a tune and on a cooler night you'll be in the 13s
Old 09-07-2009, 11:48 PM
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sorry i just firgured that just about all cars launch better if you power brake a bit. try a few different things out youll find the right thing and be set.
Old 09-08-2009, 07:58 AM
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Yeah, I've heard that the caback doesn't do much performance wise on a stock car. I'm probably going to do headers back to the axleback pipes and leave thse stock. I want the performance and a good sound, but not obnoxiously loud.
Old 09-08-2009, 08:26 AM
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Originally Posted by black widow g8gt
aite well thanks guys i guess i will jus play with it this friday at the track i jus dont understand why i would run a 14.3 when i have already put the full corsa exhaust on it that comes with the x pipe and stuff i jus dont know why i am not in the thirteens.
Unless you have a full engine and tranny tune, you're leaving at least a half second on the table in ET. You would be amazed how much timing is pulled at the starting line. The tune on my G8 made a night and day difference.
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Old 09-08-2009, 01:38 PM
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I ran my car with stock tune numerous times in hot humid weather in edinburg but it always ran 13.9 or better. After like 5k and a tune it dipped into 13.2x. If your going to the track in edinburg hit me up and i can check it out for u so u can see exactly what's going on with the scanner. I suspect your torque management is holding u back. Try using the paddle shift mode that sometimes helps.
Old 09-08-2009, 09:51 PM
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need to bring the car down to Victoria and let Patrick tune it for ya. I have ridin in his and it is quite a different car when you punch it.



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