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1985 truck 22r lc smog header. Doing header back exhaust system including some ones high flow cat. I am seeing really good thing about the "Dynomax Super Turbo Muffler". Does anyone have this muffler and if so what do you think of it. Any difference in power? How loud is it? And last but not least, has anybody had success with anyother brand mufflers other than a 40 series! Thanks, Nick
I just don't see how you can do much better than straight through...no chambers, no nothin!
As in straight pipe no muffler? I have always herd stuff about back pressure and how it effects hp? Could someone please explain the whole back pressure idea and whats the truth behind all of it? Nick
heres what nobody gets.. At the first bend and since you have a cat the back pressure is right there.after that nothing matters. . a straight threw muffler is gonna let the exhaust flow out better after that. a muffler with chambers is gonna stop it up more and decrease performance.. i love glasspacks for this reason. i run 2.5" tube and friends of mine run the same aswell as 3".. this works AWESOME with a header
Something about that explanation just didn't really come out right...but you get the picture right?
Yeah, You started off saying backpressure is bad then toward the end you say you have to have some backpressure to keep the gasses hot???
BACKPRESSURE=NOT GOOD, BACKPRESSURE=NECESSARY
You work in aviation, don't you.
Yes, why??
oh to finally clear this up you do not want any backpressure at all period. what you do need is exhaust gas velocity to keep the gasses moving quickly and to keep the exhaust pulses pulling the exhaust out of the cylinders. after the headers collector the only thing the system does is move the gasses to the rear.
ok guys let me explain what back pressure really means...even a well-designed muffler will produce some back presssure in the system. back pressure reduces an engine's volumetric effiency, or ability to breathe. escessive back pressure caused by defects in a muffler or other exhaust system part can slow or stop the engine. however, a small amount of back pressure can be used intentionally to alow a slower passage of exhaust gases through the cat converter. this slower passage results in more complete conversion to less harmful gases. also, no back pressure may allow gases to enter the exhaust. Posted
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