Ken, you said you could lose low end torque from no backpressure? How is this? Could you explain? The guy at the muffler shop told me that the cats really don't cause very much backpressure at all?
I don't know how the lack of back pressure thing works either, but I know it decreases low end torque and increases high end HP. I have a straight pipe on my car when the cutout is open, and it is completely unbearable. I'm going to weld two bullets in before the cutout and try and clean it up some because it is NASCAR loud right now
"No, officer, that bottle is my onboard Halon system"
Originally posted by Jason97T/A Ken, you said you could lose low end torque from no backpressure? How is this? Could you explain? The guy at the muffler shop told me that the cats really don't cause very much backpressure at all?
the cats do cause back pressure..but so does the muffler...
we have a whole write up on this subject buried someplace from days gone by.. ill see if i can dig it up. its rather long.....but true...and to the point.
Originally posted by wolfman the cats do cause back pressure..but so does the muffler...
we have a whole write up on this subject buried someplace from days gone by.. ill see if i can dig it up. its rather long.....but true...and to the point.
Yeah, I'd really appreciate it if you could dig that up. I had always been under the impression that backpressure was the enemy. (Unless we are talking about turbo-charged engines).
Former Ride: 2002 Pontiac Trans Am WS6 - 345 rwhp, 360 rwtq... stock internally.
Current Ride: 2006 Subaru Legacy GT Limited - spec.B #312 of 500
ive had it all (and ive only had the car2 mo.) when i bought it it was all stock accept the flowmaster, and on an lt1 just a flowmaster sounds good. but i wanted more. my woman drives a 35th 6 speed ta(all stock) well she wanted a muffler so i sold her mine and got a straight pipe set up (with cats) it was nice untill i hit like 4500 rpms then it sounded like a dang tractor. then i got straight off the manifolds, 3" in to a 3 " y-pipe, no cats, all the way back to a hooker muffler, and i must say its my favorite, and it has more low end torque~gunter
1996 Trans Am WS6 #34
http://www.cardomain.com/id/gunter96ws6
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