Exhaust questions
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oze30
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I have the chance to get a sebring rear box and no centre box.. will that be too loud? or would i be better off no middle box, and a stock exhaust?
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jonbuoy
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If it's on a 325i it will sound the nut's, not too loud either.
If it's on a 318i it will sound rather loud and you will lose back pressure ie; loss of power
EDIT: Put compression instead of Back Pressure
If it's on a 318i it will sound rather loud and you will lose back pressure ie; loss of power
EDIT: Put compression instead of Back Pressure
Last edited by jonbuoy on Thu Feb 23, 2006 2:41 pm, edited 1 time in total.
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oze30
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what if it's on a stock exhaust?
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jonbuoy
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It will sound very throaty geese, down to you but worth having a stainless.
What engine size is it?
What engine size is it?
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thesaint
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i had a sebring back box and centre section adn it sounded excellant, then it broke and i couldnt afford another one. 
1986 325i - Gone. 1993 318i touring, m52 in the planning stages.
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Turbo-Brown
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Er, the exhaust system should have no effect on compression, and if it's back pressure you're talking about, that does not help power either, despite what the common belief seems to be!jonbuoy wrote:If it's on a 325i it will sound the nut's, not too loud either.
If it's on a 318i it will sound rather loud and you will lose compresion ie; loss of power
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oze30
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a 325 touring
Define not loud.. you talking about scorpian loudness? or chav loud? ( both I don't want
Define not loud.. you talking about scorpian loudness? or chav loud? ( both I don't want
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iDreamBeemer
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I have just bought the Sebring back box for my iS, in 2 minds as to wait and get the centre section as well or if just to go for the back box on the standard exhaust
Been told it is nice and throaty but not chav loud!
Have to say it was a fair bit bigger than I was expecting but I am also interested in what peoples experiences have been.
Been told it is nice and throaty but not chav loud!
Have to say it was a fair bit bigger than I was expecting but I am also interested in what peoples experiences have been.
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DieselMeister
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What Turbo Brown said. A poorly optimised exhaust will affect the driveability of the car though. I'm sure that backpressure affects the torque characterisitics / delivery. Less BP can lead to higher flow and more top end but this is often at the expense at the expense of low speed lugging / tractability.
Whether or not you'd notice dpends on the application and you sensitivity I guess.
I'd buy an aftermarket for sound and durability rather than power any way. It only makes a big difference on big displacement / forced induction applications in my experience.
Whether or not you'd notice dpends on the application and you sensitivity I guess.
I'd buy an aftermarket for sound and durability rather than power any way. It only makes a big difference on big displacement / forced induction applications in my experience.