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Straight pipe's for 2nd cats or resonators??

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Old 02-25-2010, 11:04 AM
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Straight pipe's for 2nd cats or resonators??
Hey guys just wAnted to know straight pipes instead of the 2nd cats or resonators!?? And Which gives me more gains taking out resonators with straight pipes or taking out 2nd cats with straight pipes, plus I have the k2 so want the most of it!! Thanks...
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Old 02-25-2010, 02:06 PM
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You will definitely see more gain by losing the secondary cat. I do not suggest removing the resonator because the stock resonator has the crossover pipe integrated into it. That crossover balances the two banks. Just my suggestion.
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Old 02-25-2010, 02:12 PM
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I second the secondary cats removal. Removing the resonator will be obnoxiously loud. No offense, Keith.
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Old 02-25-2010, 02:14 PM
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Originally Posted by avengerboater
I second the secondary cats removal. Removing the resonator will be obnoxiously loud. No offense, Keith.
No Offense taken. Trust me, when I'm not at the track the stock resonators and exhaust goes right back on. Takes about 1/2 hour to exchange out.
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Old 02-25-2010, 02:39 PM
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Originally Posted by Dads C63
No Offense taken. Trust me, when I'm not at the track the stock resonators and exhaust goes right back on. Takes about 1/2 hour to exchange out.
Do you have a lift at home? That would be awesome!
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Old 02-25-2010, 04:02 PM
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Originally Posted by Sincity
Do you have a lift at home? That would be awesome!
Nope, back it up on ramps here at the office and can change it in 30 minutes. Since it bolts on its really very simple with hand tools.
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Old 02-25-2010, 04:19 PM
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If you have K2, why not take off both cats and leave in the resonator? This is essentially what most folks would have running the LT headers right? I assume with the K2 programming you'll pass emissions tests either way...and without the program, you'd fail either way. Why not go for the extra horsepower?
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Old 02-25-2010, 06:33 PM
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Originally Posted by clktoc63
If you have K2, why not take off both cats and leave in the resonator? This is essentially what most folks would have running the LT headers right? I assume with the K2 programming you'll pass emissions tests either way...and without the program, you'd fail either way. Why not go for the extra horsepower?
Can you pass emissions with cat deletes? Even though no CEL, I still would think the emissions folks will know you don't have cats and fail the vehicle...not that it takes much to reinstall for an annual thing...
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Old 02-25-2010, 06:43 PM
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Originally Posted by miami1lt
Can you pass emissions with cat deletes? Even though no CEL, I still would think the emissions folks will know you don't have cats and fail the vehicle...not that it takes much to reinstall for an annual thing...
I've been told if I'm in a state where the emissions test is the OBDII test, passing emissions should be no problem with a Kleeman tune and cat delete. The secondary O2 sensors need to be plugged in for the ECU to see a signal, but it won't matter what the signal reads.
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Old 02-25-2010, 06:53 PM
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Originally Posted by Dads C63
You will definitely see more gain by losing the secondary cat. I do not suggest removing the resonator because the stock resonator has the crossover pipe integrated into it. That crossover balances the two banks. Just my suggestion.
Thanx for ur suggestion man I know that's the best way for free flowing the exhaust and givin more power so I guess I'll do that!! so what bout sound how is Gina be really loud or slightly louder!??
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Old 02-25-2010, 06:57 PM
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So I guess I'll replace the secondry pipes with straight pipes and hope fully have more power and hopefully not get any check engine lights!!
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