do we need exhaust back pressure or not?
#1
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do we need exhaust back pressure or not?
I was wondering if the F runs better with back pressure (muffled mufflers) or better with a straight thru exhaust...im sure dyno numbers will increase with straight exhaust...but we know sometimes the numbers could be different on actual load conditions...anyone have any experience?
I've been trying to search videos if anyone tested muffler deletes vs stock,muffler delete vs other catback exhaust but could'nt find any vs videos
I've been trying to search videos if anyone tested muffler deletes vs stock,muffler delete vs other catback exhaust but could'nt find any vs videos
#2
Lexus Champion
iTrader: (9)
There's much to read about this very subject on the web. Bottom line is, making more power is not really about back pressure, it's all about exhaust flow. For optimal flow you need the right sized pipe and the optimal components to insure a good flow (velocity). To big, and it won't flow, too small and it'll choke.
But, to answer your question, removing or modifying impediments in an exhaust system with properly sized pipe is always a good thing as far as power is concerned, not so good as far as noise is concerned.
Lou
But, to answer your question, removing or modifying impediments in an exhaust system with properly sized pipe is always a good thing as far as power is concerned, not so good as far as noise is concerned.
Lou
Last edited by flowrider; 02-07-15 at 12:53 PM.
#3
Tech Info Resource
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Anybody saying any engine needs "backpressure" doesn't understand exhaust physics. Besides, your question sounds more like, I want to know if anyone else has tried these solutions for exhaust configuration, not "do we need backpressure."
Lou's explanation is dead on the money.
Lou's explanation is dead on the money.
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#8
Lexus Champion
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The attached is from the MagnaFlow Website. Third party dual systems for the ISF are all 2½" constant diameter. Ant that IMO, is the correct size for the ISF 4,969 CC (303 CI) engine. The stock exhaust has multi sized pipes, and IMO does not breath well. The stock manifolds (headers) also do not flow very well IMO.
Lou
Lou
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P.Williams
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06-23-04 06:06 AM