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What are some things I could do to improve the HP of my 2003 grand prix GT?

Z

ZK48

New member
I want to improve the HP of my 2003 grand prix GT? My budget is $500. I'm already going to get a K&N air filter and new exhaust bodies. Also what exhaust bodies should I go with, magnaflow, or thrush?
 


Exhaust BODIES?

You mean mufflers?

Save your money and leave it stock.

For a GT...and $500.

Headers, HV3, Tuned PCM.

Just buy a cone filter and make your own intake and save your money on that K&N junk too.

Click the link in my signature and READ.
 


agreed.

Costs so much more.

So much in fact, you MIGHT as well start with heads and a cam in there because you'll want to do it later.

Then you'll need a transmission.


having fun yet?

At the very least, heads rebuilt ($300), headers (300-600) on top of your 500...

Tune? 100-250.

Aeroforce and wideband? $400.
 
matt5112 said:
agreed.

Costs so much more.

So much in fact, you MIGHT as well start with heads and a cam in there because you'll want to do it later.

Then you'll need a transmission.


having fun yet?

At the very least, heads rebuilt ($300), headers (300-600) on top of your 500...

Tune? 100-250.

Aeroforce and wideband? $400.
Click to expand...

Why I decided not to topswap..... and future plans for turbo.
 
Mine cost me around 3 times that. Ill admit I probably could have done it for less, but i would declare it near impossible to have a good running top swap for 500.
 


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