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Old 01-17-2012, 10:08 PM   #1
nebchevy
 
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Help Please!!

Ok so heres the deal... I need to have thoughts on what I should do. They reason I ask is cause more ideas the better it gets!

1) 2.5in Magnaflow or 3.0in Magnaflow..

2) Should I install headers, and can you do it without a tune??

3) Is it ok to just use clamps on exhaust or should I get it welded on?

4) If I use clamps, do I just cut the old pipes with a hack saw?

Last edited by nebchevy; 01-17-2012 at 10:18 PM.
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Old 01-17-2012, 10:26 PM   #2
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well, to start off...

1) 3" if you want more power later on.
2) Long Tube Headers require a tune but shorties do not (a tune will always maximize your gains from any bolt ons)
3) Welded is best but large band clamps work just as well. Most after market exhaust uses band clamps (ideal for adjustments)
4) yes a hack saw will work fine.
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Old 01-17-2012, 10:30 PM   #3
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So whats the diff between long and short headers and can you run longs without a tune till my warrenty is up?
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Old 01-17-2012, 10:51 PM   #4
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any help
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Old 01-17-2012, 10:58 PM   #5
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Long tube headers will yield more HP & torque and also be a little louder.
You'll throw CEL code on the dash thus requiring a Tune.
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Old 01-17-2012, 11:02 PM   #6
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2 1/2" exhaust is fine for 90% of people. And long tube headers for power shorty's just for sound. Yes u can do it without a tune but won't get as good of gains and u will get a cel. U can us exhaust clamps and the factory exhaust is held on by clamps so u shouldnt need to saw anything. Hope this helps
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Old 01-17-2012, 11:06 PM   #7
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So will the CEL cause like poor performance or just a code? Why do the long hearders need tuned but not short? Also what would a short headers with high flow cats and muffler dels sound like?? Would it be way to crazy loud?
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Old 01-17-2012, 11:10 PM   #8
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I have long tube headers no cats into my full exhaust and I he compliments daily. And with my j pipes the sound inside the car is almost non exhistant. I wouldn't waste money on shorties the stock manifolds breath fine. Long tune headers or nothing. And high flow cars on a magnaflow exhaust will sound good.
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Old 01-17-2012, 11:16 PM   #9
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Ok so since I am worried about my warrenty... you think I should just do a 2.5in magnaflow exhaust with hight flow cats? Also how much diff does high flow cats make and do they just hook right up so they wont need to be tuned? Also I will be adding a super charger when warrenty is up if that makes a diff
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Old 01-17-2012, 11:25 PM   #10
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Quote:
Originally Posted by nebchevy View Post
So will the CEL cause like poor performance or just a code? Why do the long hearders need tuned but not short? Also what would a short headers with high flow cats and muffler dels sound like?? Would it be way to crazy loud?
Long Tube Headers need tuned because you have effectively moved the O2 Sensor further back and LT Headers can also cause a car to go Lean.

About the CEL....In technical terms, the tune would put a delay on the O2 feedback so that you don't get a code complaining about slow to respond.
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Old 01-17-2012, 11:26 PM   #11
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Quote:
Originally Posted by nebchevy View Post
Ok so since I am worried about my warrenty... you think I should just do a 2.5in magnaflow exhaust with hight flow cats? Also how much diff does high flow cats make and do they just hook right up so they wont need to be tuned? Also I will be adding a super charger when warrenty is up if that makes a diff
Yes....if you're worried about your warranty, stick with HF cats and a cat-back. 2.5" will be fine but 3" will give you a little deeper tone. You wan't really see a performance difference between the two.

The HF cats will hook right up to your stock headers and a cat-back. Should be no issues there. Look at either SOLO or JBA HF cats.

Once you go to a super charger you'll want to go to LT headers.

BTW: Look around at prices on the Magnaflow cat-back. Then call JDP Motorsports (call don't go by the website prices) and you'll see they'll have some of the best prices. They are a vendor on here and have great customer service.
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Old 01-17-2012, 11:32 PM   #12
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On a side note....when / If you go Super Charger you'll want to remove the Cats and go with a mid pipe (straight pipe). F.I will typically eat Cats for breakfast, lunch and dinner.
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Old 01-17-2012, 11:54 PM   #13
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So would I be better off to just del my CATS now? Also if I were to del them now and just go straight pipes... is there anything that will void warrenty or need to be tuned or any error codes since you wont have any cats?
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Old 01-18-2012, 02:55 AM   #14
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My suggestion for u since u seem very worried about voiding your warranty is to just get a cat back exhaust. Plus u said u are going to supercharge it after your warranty? So u plan on supercharging a car after 5 years and 100k miles? Boost is not good on a motor with those kind of miles. These motors don't hold boost that well anyways
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