Ken
I'm speaking from my own experience on this one. When I put a high-flow
cat (on the existing pipes) I didn't notice much difference. When I
replaced the stock cat-back setup with 3" single pipe to a Flowmaster
muffler, I had a hugely obvious drop in low-end grunt (even my wife
noticed, and she's NEVER gotten to the bottom of the accelerator
pedal).
Fortunately, I went back to the muffler shop within 2 days, and they
were willing to swap out the 3" setup for a 2.5" setup (I ate the labor,
they exchanged the muffler gratis and gave me a break on the new labor
and materials). The 2.5" cat-back still loses some of the low-end, but
not as badly, and the top-end (2500 RPMs+) is better than before.
I personally would not run larger than 2.5" on a V6, unless you're
turbocharging the truck.
Kurt
"Eng, Kenneth" wrote:
>
> Kurt,
>
> I have a 98 CC 4x2 with a V6 and was looking into getting the Gibson split
> rear cat back system with 2.5" pipes. Are you recommending that I stick
> with a single exit system with 2.5" pipes? Anyone else have any
> recommendations/comments?
>
> Thanks,
> Ken
>
> -----Original Message-----
> From: kwjohn@mindspring.com [mailto:kwjohn@mindspring.com]
> Sent: Wednesday, February 09, 2000 12:15 AM
> To: dakota-truck@buffnet.net
> Subject: Re: DML: Gibson, Borla, or Flowmaster; which is most quiet?
>
> >>snip<<
>
> One more suggestion: if you DO have a V6, don't run dual exhaust and
> don't run pipes larger than 2.5" diameter - you lose to much back
> pressure and lotsa low end torque.
>
> Kurt
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