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Old 12-12-2010, 11:29 PM   #1
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2003 GT Conv Auto Trans/Power Mods

I just bought a 2003 GT Conv/w an auto trans. What can folks offer regarding cold-air intakes, throttle bodies, and exhaust as a means to to Increase HP? I am looking for a low cost approach to increasing HP without removing manifolds, heads, cams etc.

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Old 12-13-2010, 08:24 AM   #2
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Re: 2003 GT Conv Auto Trans/Power Mods

bolt ons help but dont make a HUGE difference. I would recommend a new upper intake/throttle body (together) and then a nice intake (they all do about the same thing so buy one thats good quality not a cheap-o one)

After that get an underdrive pulley, catback exhaust (or remove cats if you wish), 3.73 gears (rebuilt tlok unit if needed while in there), some lower control arms from a good company like maximum motorsports.

Finish off with a tune.

Should net you some good gains of around 30-35rwhp in total with tune maybe more~

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Old 12-13-2010, 08:29 AM   #3
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ACCUFAB makes a upper intake and throttle body combo.can also get them in polished if u want that look.
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