How to Add Horsepower to the 2004 GXP - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Bonneville GXP/ Northstar Powered Cars Discuss your Bonneville GXP and/or any other Northstar powered Olds or Cadillac... Including the 3.5L Twin Cam V6 (Short Star ) 4.0L and 4.6L Northstar V8's. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-02-2004, 03:00 PM   #21
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Old 06-04-2004, 02:58 AM   #22
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You may want to checkout this artical from hotrod about the Caddy Hot Rot Fabricator modifications - including turbo kits up to 2000HP

http://www.hotrod.com/techarticles/e...rth/index.html

They say the engine will turn a reliable 8500 RPM and with cam/head work can make 500HP+ at 7700RPM.
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Old 06-04-2004, 03:23 AM   #23
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Here is some guy who puts Northstar'* Fiero'* - not sure if they also mod the engine.


http://www.kitcarman.com/north1.htm
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Old 06-16-2004, 11:39 AM   #24
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I am glad to have found your site, the first thing I installed was the K&N filter and a set of Flowmaster mufflers, what a great sound!! I have been corresponding with Domestic Performance to get a set of headers and a computer upgrade, both I was told are on the horizon. They also are looking into making me an air intake upgrade. I have searched CadillacForums for more advise with no luck. Any other idease would be greatly appreciated. Thanks!

Scott
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Old 06-16-2004, 05:15 PM   #25
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Scott, Any word on PCM for the GXP'* yet?

Scott
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Old 06-17-2004, 10:59 AM   #26
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Default How do I change my status

Out to the side of my posts it says LE member and I have a GXP, can't figure out how to change that? Any help?
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Old 06-17-2004, 11:16 AM   #27
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Its a post count ranking system, its not indicative of your car.
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Old 06-18-2004, 11:28 AM   #28
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Thanks Jim! I guess I just showed you all that I am the "NEW" guy to the club. Does Scott from Intense have performance parts for GXP'*? I would like to get another source for upgrades, the only one I have found so far is Domestic Performance. So far, I haven't had any luck getting much of anything because the car is so new. I want to put my car well into the 300 HP range, just need to know where to get the parts?
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Old 07-02-2004, 01:14 PM   #29
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Default Horsepower upgrades for GXP'*

Anyone have any luck finding more ways to upgrade the horsepower on the GXP' yet? Haven't heard back from anyone lately.
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Old 07-09-2004, 11:54 PM   #30
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Default How to add Horsepower to GXP

BADSSEI writes: I'd like to suggest that we use this thread as a blackboard for some of our ideas, and I'll keep updating this first post periodically.

1) K & N Air Filter - part number 33-2063-1. The folks over at Edmunds.com say this is an exact match and will fit our cars. I haven't confirmed this yet, but plan to order one soon.

2) PCM - I don't know how much opportunity there is here, but we'll start working on this one next week, and we should have PCM'* available by the end of June.


Today I added 33-2063-1 K&N filter: BadSSEI, I too noticed that when I first compared my 03 SSEI to 04 GXP on take off there was no comparison, SSEI hands down. Then I realized that you couldn't just stomp on the peddle, you had to ease on it. Today, with more air added and turned off traction control it'* real close but a different take off. GXP
glides 0-60 whereas SSEI jets 0-60. I don't want to mess with the computer just yet. Let the newness wear off some.

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