Hey,
To keep this plain and simple I just purchased an 05 GT, and I am looking for advice on my first few upgrades. I am mainly after performance. I was hoping for some mods that give me noticeable gains, not ones that leave me wondering what they did lol. Any input would help!
Thanks!!!

put a turbo on it. any mods to it while its n/a is not really going to get you all that much.

__________________
98 XGT - 3.2/3.4, s&s, ported m90, ported tb, 1.9s, jp dbl; tinted, blacked out, lowered
soon -> ssic

lol i think a turbo may be just a bit extreme

What kind of gains are you looking to get? Like how much more horsepower are you looking to achieve? Are you talking 20hp or more like 100+hp? How much money are you looking to spend? That will give us a better idea of what to suggest for you.

Like stated there is only so much you can do without forced induction. If you're looking for some decent gains, intake, downpipe, PEM's,PCM,HV3, rockers. Any of those, or better yet a combination of those will give you noticeable gains. If you're looking for bigger hp, forced induction whether it be a top swap/ssm90 kit or turbo is the way to go.

Headers, HV3, ER Rockers, and Nitrous.

I don't think headers would be a good idea unless he's going to supercharge it or go all out N/A. With headers you will lose more low end torque than it's worth. PEM's are plenty.

anything you do on an n/a platform will not net you that much result. im still voting turbo.

__________________
98 XGT - 3.2/3.4, s&s, ported m90, ported tb, 1.9s, jp dbl; tinted, blacked out, lowered
soon -> ssic

That's true, unless you want to dump in lots of money which you're still limited. The thing is, he may not want that kind of power, but just a little more get up and go.

Thanks for all the replies!,
To be honest I would love to get the turbo more than anything. Am I willing to fork out all that money, i'm not sure. The reccomended upgrades sound like a plan, and I am going to think further on the turbo!

if you want an all out fast car in the end, the l36 mods you can do will just surplus your turbo later. if you just want a car thats quick, not fast then an m90 swap would be your best bet, but then all the n/a mods would be useless unless you went as far as a cam and heads.

just think about what you really want to do with it before you start throwing money around.

__________________
98 XGT - 3.2/3.4, s&s, ported m90, ported tb, 1.9s, jp dbl; tinted, blacked out, lowered
soon -> ssic

Hey man,

Well I recommend that you begin with brakes! Stopping power before anything... some vent disk and high performance pads will do the job.

Then If you are not supercharged and don't want to do a top swap, then go for the k&n cold intake system (about $250-$350) and that will give you like 10-20hp. Or if you want to go all way out, then go turbo (about $4,000) and that will give you 100hp+ depending on stage and configuration. But Never consider an electric turbo since it is a fraud! They advertise a 2-3psi boost but what really happen is that is a 2-3psi restriction with the turbo powered off and normal performance when the turbo is powered on. (Yes you will feel the boost... from restriction to normal!)

Then delete the U-bend on the exhaust, that will give you like 3-5hp. And if you want a nice sound, then go magnaflow or flowmasters (you'll love it, unless you got small kids and a wife then your wife will hate it since is very loud and blah, blah, blah!!) and it will give you like 15-20hp with the U-bend deleted.

Change the ignition coils from stock (rating 15,000 volts) to racing (rating 40,000 volts) all six for $150 in grandprixstore.

Then you can upgrade your suspension to allow the HP to go more freely from your engine to your tires, you'll always loose some HP from the Flywheel to the Tires (from 15-25 % depending on weight and other stuff) but suspension upgrade will help you to not loose that much.

If anything comes to my mind, I'll write later.

Also, remember that when you are installing performance parts to your car you can't expect to be mathematically adding horsepower with every upgrade you install, sometimes 1hp + 1hp isn't 2hp, sometimes it is 1.5hp at the end and sometimes is 1.2hp and so on. All performance upgrades need to be balanced to help each other to increase the expected horsepower.

Anyway, good luck.

__________________
2004 Pontiac Grand Prix GT1 3800 III Series
http://www.cardomain.com/ride/3041723
Racing Spark Plugs, Racing Spark Cables, Performance Battery, K&N Air Filter in Stock Airbox, K&N Oil Filter, U-Bend Deleted. More coming soon!!