H/C car with Dynomouth exhaust and stock I pipe? Is it hurting me?
11-11-2005, 11:38 AM
#1
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Join Date: Dec 2001
Location: clinton twp. MI, USA
Posts: 355
H/C car with Dynomouth exhaust and stock I pipe? Is it hurting me?
I have a Heads / cam on my Lt1, I have Slp headers. For a cat back have the stock I pipe with a dynomax bullet welded into it. Its called the Dynomouth to some people. I'm wondering if the stock 2.75 I pipe is hurting my performance here?
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11-11-2005, 02:03 PM
#2
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Join Date: Nov 2003
Location: Mishawaka, IN
Posts: 1,771
Re: H/C car with Dynomouth exhaust and stock I pipe? Is it hurting me?
You might notice a small improvement with an aftermarket 3". But nothing big. I would say you should put it on your "to do" list, but it's not something that's killing your performance. Generally the manifolds are the biggest power robber on domestic V8s.
11-15-2005, 09:58 PM
#5
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Location: Phoenix AZ
Posts: 815
Re: H/C car with Dynomouth exhaust and stock I pipe? Is it hurting me?
I just recently pulled my shorties/stock I pipe off and went to longtubes and true 3" duals. Was at 350rwhp through a stock catback and a flowmaster. Gettin dynoed on Friday, we will see, expecting 370rwp or so. I will post results.
11-15-2005, 10:09 PM
#6
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Location: Waterloo, Ontario
Posts: 599
Re: H/C car with Dynomouth exhaust and stock I pipe? Is it hurting me?
Depends on your power level I think. If the engine was stock then its not holding back much but with H/C it becomes more of a problem as power is increased. I have a cam and longtubes and put a cutout in after the Y and picked up 26 rwhp and 18 rwtq eliminating the stock I-pipe and flowmaster. The only way to tell is to dyno and then drop the exhaust and redyno.
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