how does exhaust change performance
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Junior User
Joined: Jan 2005
Posts: 70
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From: South east detroit
how does exhaust change performance
does increasing the pipe size change teh rpms or anything like that, I was reading something but couldnt gather a solid answer on how altering an exhaust will effect the engine, good or bad. I am not looking for anything better I am just looking to avoid poor performance as well as loosing gas mileage.
Some people said losing some of the restriction is bad. I dont get it. someone clue me in so I can make a better decision.
Thanks
Some people said losing some of the restriction is bad. I dont get it. someone clue me in so I can make a better decision.
Thanks
Senior User
Joined: Jan 2005
Posts: 187
Likes: 3
From: New Bern, NC
Good question. More is not always better. If you increase your exhaust size then the engine can expell spent gasses easier, BUT, you do need to maintain some back pressure for it to be efficient, the exhaust pulses from the other cylinders help to pull (scavenge) the gasses from the cylinder. If you have a restrictive exhaust, then it takes more power to push the gasses out of the cylinder. You will not be able to spin more rpm's out of the engine per se, but you can get to redline quicker. If you have not improved the intake side any, then you may see small gains in power by upgrading your exhaust. Where you are likely to see the best gains is when you upgrade intake as well as exhaust. An engine is nothing more than an air pump, more air in= more air out. I doubt you will see gas milage degrade from an improved exhaust.
Hope this is accurate and helps.
Hope this is accurate and helps.
Posting Guru
Joined: Jun 2002
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From: Rio Rancho USA
