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Help with some mods

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Old Nov 21, 2008 | 11:44 AM
  #1  
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Default Help with some mods

Ok i have 04 c5 stock .What would be the first mod to do for hp for the money to start with.i know once you start mods its hard to stop .i just wont to take it easy if i can .some help would be great
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Old Nov 21, 2008 | 11:49 AM
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A set of long tube headers with hi flo cats, X pipe and air intake, along with a good dyno tune from a reputable tuner should give you the most bang for the buck. This should not be much more than $2500 installed.
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Old Nov 21, 2008 | 11:52 AM
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How much hp would i gain with that set up???????
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Old Nov 21, 2008 | 01:37 PM
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My car was done incrementally, documenting what each step produced. I got about 50 HP from this. BTW, LG Streets are what I put on mine, see sig for the rest. The tuner is really the key to getting the power and driveability you want. Also make sure you have the installer upgrade the clamps if you go with the Streets. LG makes a great product but these are budget priced and don't come with the wider clamps, leading to leakage. I replaced all with the wide stainless clamps and that solved the leakage issue.
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Old Nov 21, 2008 | 03:15 PM
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It all depends on what you want from the car. Do you want (need) more HP or better seat of the pants acceleration?

If you are lookin to wake the car up, I would go with a different rear end maybe 3.42 if you have an A4 or 3.90s if you have an MN6.
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Old Nov 21, 2008 | 03:20 PM
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Id say, a nice intake and a cat-back exhaust. Then save a little more buy Long Tubes and get a tune Good Luck trying to stop the Mod Bug
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Old Nov 21, 2008 | 03:25 PM
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Some good advice above.
Cam, SC.
What are you looking to attain? And the age old adage of you can go as fast as you want to spend.
Current transmission and rear end would be good to know.
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Old Nov 21, 2008 | 04:42 PM
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Its a base model c5 auto what a 2.73 rears.Just looking for some extra hp without heads and cam.Thanks
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Old Nov 21, 2008 | 04:59 PM
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Performance hood seal....

OK, OK.....headers, cat-back, and tune. Best bang for buck.
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Old Nov 21, 2008 | 08:18 PM
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lol didn't take long for the performance hood seal to pop up
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Old Nov 21, 2008 | 09:10 PM
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Racing stripes add about 25 hp to the rear wheels...

Intake and Exhaust are the easiest to install and make a definite difference! Cheers, Indy.
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Old Nov 21, 2008 | 11:00 PM
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A set of long tube headers with hi flo cats, X pipe and air intake, along with a good dyno tune from a reputable tuner should give you the most bang for the buck. This should not be much more than $2500 installed.


With the headers and some 3.42 gears you would take a full sec of you 1/4 mile ET. The headers and tune could give you up to 50 rwhp. Plus the sound is much improved. You will love it.
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Old Nov 21, 2008 | 11:28 PM
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So far, I ave done a Vararam Intake and Corsa Pace Car cat back exhaust. Very happy with the results and love the sound of the Corsa exhaust. Next I will do the long tube headers, x-pipe and a tune.
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Old Nov 22, 2008 | 12:02 AM
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Cold air intake, exhaust, tune. I have a Vararam, Borlas, and a tune which I believe has netted me about 50hp.
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Old Nov 22, 2008 | 12:16 AM
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Best bang for the buck.First gears,good tires,and spray a 100-150 shot with a good tune.Then start saving for a high stall converter.
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