shepuz2

iTrader: (2)

My '02 Formula with flowmaster exhaust and 3.5" tips was equaled today by a God Damn Pontiac Grand Prix GTP on a short stretch of highway (no more than a 1/2 mile).

We only got to about 115 before I had to slow down to hit my exit, but prior to that - he kept up with me and I couldn't pull away.

I know I have at least 310 horsepower stock and I know that GTP doesn't.

What the hell is going on?

Is it time for some mods (airbox lid, K&N)??

This was embarrassing.

V8pwrdz28

iTrader: (5)

arent the GTPs blown? he probably wasnt stock either way.

shepuz2

iTrader: (2)

He had a tricked out paint job, but i didn't see any obvious mods......I think those GTP's came stock with those square exhaust tips.

LS144

iTrader: (7)

Man it wasnt stock then. I got a buddy who has a ported blow exhaust bigger pulley and everything and that car runs 8.6's in the eigth.

NHRAMAN

iTrader: (1)

You are low--or he was majorly modded...I don't even bother with those cars.

black00TA

iTrader: (3)

i have a buddy who runs 12's with his.

cam, ported blower, tune, tranny.

2K2WS6TA

iTrader: (2)

They're the supercharged 3.8, stock not much of a problem for an LS1, but throw a few mods on them, they can be as fast if not faster.
If he had a custom paint job, odds are he was sporting a few other mods
BTW get rid of that flowmaster, they don't flow all that well in the ls1 system

Cop Car

iTrader: (14)

12.6 is what one of them around here ran with headers, pulley, tune and a cam

TIM Z

iTrader: (12)

ive also seen 2 of them in gmhitech mag said they were low 12's. i guess you cant underestimate anything!

OverLord

hit the track, and see what you get.

Toadman

Raced one a few years back and he told me he ran a 13.8. I pulled 3 to 4 cars on him to 120 but he has some mods. Don't remember what they were though.

BlueSix

Try putting an exhaust on your car that doesn't take away 10hp.

shepuz2

iTrader: (2)

it came with the flowmaster when i bought it with 29K

any suggestions on what to get?

black00TA

iTrader: (3)

ANYTHING else.

BiggCmass

iTrader: (1)

a GTP with a puley swap, inatek and exhaust will run mid high 13s...for a FWD 4 door they are pretty respectable.

Get your car dynoed or bring it to the track- can't judge your cars performance based on another car with unknown mods.

mpe488

with just basic intake/exhaust/pulleys/tune you can spend very few bucks and have a pretty quick sleeper.

LS1SpeedAddict

iTrader: (9)

I can verify that I have a flowmaster on my car and it sounds great but it is Super Restrictive. On the dyno when I run with my cutout open I gain arround 20hp. I do have more engine mods then you but to say the least Flowmasters Suck on our cars.

robb4964

That car must have been modded.
Is your formula a 6 speed or an auto?

GXPPOWER

their are Numerous GTPs that will eat stock F-bodies for breakfast. and its even easier for the GT models with the car tuning turbo kit.

J E T

iTrader: (5)

You'll just have to learn that there's always a faster car out there than you. LS1's aren't the fastest things on the road you know. When your damn near stock (you said all you have is a Flowmaster; which flows probably worse than the stock muffler), you have to watch out for those FWD and AWD cars (GTP's, EVO's, STI's, etc) because they can take us stock with just minor mods. I've learned to never underestimate such cars, even 350Z's. I learned the hard way racing a modded GTP from a dig when I was stock and the result was a loss for me by 3-4 car lengths.