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Sedans Pontiac Grand Prix Pontiac Grand Prix Performance Modifications
25 messages, Last post on May 07, 2008 at 5:15 PM
You are in the Pontiac Grand Prix Forum. Your Hosts are pat & karens
I recently purchased a 2006 GXP loaded . The question I have is what tweaking can I do to get a bit more HP. I did purchase a KN Filter and I am looking for some advice.
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Replying to: gxpdad (Mar 24, 2006 7:12 am)
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Replying to: rmozol (Mar 24, 2006 12:13 pm) |
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As far as the additive, it's kind of a wash for price. Unless you can get it VERY cheaply, it costs more actually. Figure $6 for a bottle, and 17 gallons, and that works out to an extra 35 cents a gallon. Around here, premium doesn't have the 10 cent jump like regular to mid-grade. It's only about 13 to 15 cents a gallon more than regular. I found pads I'm getting too. EBC makes a "red" series for our cars. They bill them for "fast street driving and heavy braking" which MIGHT fit!  They are said to reduce brake dust a LOT, according to the manufacturer. They're only $80 a front set, including shipping. I just ordered a set!
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Replying to: rmozol (May 15, 2006 10:03 am) |
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Has anyone has their computer chip reprogrammed. I am interested in getting the rev limiter removed and possibly tweaking some of the other programs. I found a place where you can buy the programmer for the 05 GXP online but I have an 06. Will this work for me? Also has anyone modified their exhaust? I love the low end idle rumble but my GXP seems to lose it roar at higher speeds... And what about the potential of a supercharger or turbo? I have read that there is a possibility that the transmition can only handle the stock engine. Any thoughts? Lastly I asked before but got no answer...do we have anyone here who has put in aftermarket car audio equipment? Thanks, Ryan
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Replying to: smallegan (Jul 17, 2006 6:22 am) I took the stock mufflers off of my 05 bonneville gxp, and put on the flowmaster "hush power 2" Wow, what a differance. Has a great low rumble tone, and a great sound on take-off, depending on how heavy your foot is. Ive had people back off at a green light, and i know its the intimidation of the growl. check out their website, and you can actually hear the mufflers. I was really surprised because the sound was pretty much identical to the way mine sounds. GAry
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Replying to: smallegan (Jul 17, 2006 6:22 am) No one to date has had any issues and we're looking at some with 8mos of use and many track miles on them. Feel free to email me for pointers to other boards that will allow you to study this more. Tranny wise, you won't have a problem. Not sure if the tranny will handle the constant power, but IMO, I'd go turbo. Better gains, more power and easier on the tranny in terms of power delivery. Exhaust wise, the best results I've seen while not turing it too loud is the removal of the resonator. Deeper growl and throatier up top. Here's a sound clip of a friend with it removed. http://www.unr.nevada.edu/~yuichiro/movies/wot.wmv
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Replying to: tlauro (Jul 17, 2006 2:05 pm) I watched that movie and loved the way that sounds. How hard is it removing the resonator on the GXP? Also you said you know of some other boards that discuss these types of mods please feel free to shoot me a list  I am looking for all of the info I can get. -Ryan |
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