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Old 04-25-2001, 01:25 PM   #1
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Thumbs up

I saw some ppl asking about GTP mods. Well, there are TONS out there. You just have to know where to look. For one, http://www.grandprix.net and http://www.clubgp.com

There is a large forum there and there is also a IRC chat room. If you know about IRC, jump on the irc2.gpclub.com server and get into #grandprix. If not, ask me.

I have seen GTP's over 300hp and I know of one that is at 420 hp. ))
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Old 01-15-2003, 02:31 PM   #2
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WOW! 420hp? Would like to know what mods were done on that one.
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Old 01-15-2003, 07:26 PM   #3
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Actually, now there is a gtp with close to 500 hp at the crank. Most of the top performers work/for/at or own thrasher engineering, zzperformance and intense performance.

www.intense-racing.com
www.zzperformance.com
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Old 01-15-2003, 08:46 PM   #4
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Thanks for the websites skza
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Old 01-26-2003, 06:48 PM   #5
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The Thrasher 3.5" Pulley and Magnuson Nose Drive and Pulley got to be the best mods for the supercharged 3.8 series two. They don't cost alot and you get great HP. We all like that don't we
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Old 01-27-2003, 04:38 PM   #6
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Might as well open up your intake and exhaust at the same time. Its all about how much air you can force through your engine.


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Old 01-28-2003, 03:04 PM   #7
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Thats right. Do what i did.....Put A Magnaflow Cat. on. Take Resonator off and Mufflers Don't sound all that bad if you Make your tips 24inch long to replace the mufflers and have them come out at 4in. Give it a nice rumble and non of that anoying bumble bee sound. I don't think it hurt the HP any.
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Old 01-28-2003, 03:08 PM   #8
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I have a bonneville and I have an offroad downpipe running to a F-body Magnaflow Stainless Steel muffler. Its a little loud, but it sounds good. Definitely not a bumblebee.
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Old 01-28-2003, 03:20 PM   #9
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sounds good. everyone told me that if i take the mufflers off and resonator it would sound like sh!t. I proved them wrong and made it sound good and one of the loudest cars at school
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