custom exast

[nadroj]

how much more power can i expect with a custom exast from a mufler shop. I have a 91 318is

 

[Bimmubishi]

None. Do you have a race motor? See how much money you just saved

 

[mikev]

hehe,

you could actually loose power!!!!

unless you tune the engine to the exhaust (which requires a mechanic friend if you've not got the kit) then you could expect anything from a whopping 0 - 2hp increase

 

[nadroj]

whats the point in getting new exust then or are there other upgrades that can make it add more

 

[rjp325i]

The only time you gain anything worthwhile is if you also invest in headers. Then you might see 6-10hp at the high end of your rpm range if you change out everything else as well with a setup from a company like Supersprint. Otherwise all you get is more noise which is what some want for whatever reason. If you have a highly modified engine then it is a different story, you need the improved exhaust flow to realize the full potential of the mods. On a relatively stock engine all you've done is spend a lot of money for more noise and hopefully it does not sound like a weedwacker. A poorly executed exhaust can reduce power. If you have to replace anyway due to wear etc, use good quality reputable parts. A Conforti/Turner Motorsport chip will cost $199 for the 1.8L engine and yield an added 12 hp at 5000 rpm and a 16 ft lb torque increase at a slightly lower rpm.

 

[OreoGaborio]

dude... spell "exhaust" correctly.... PLEASE!!!

 

[bichmgnt]

"It's a small mind that can only spell a word one way." -Unknown

Steve

 

[nadroj]

ill try to spell exahst right