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Custom 4" Exhaust Help

felixy69

By felixy69,
in Engines & Forced Induction

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MBS206 Grand Master

MBS206

Posted
Posted
Of course a car with no mufflers, ext gates not plumbed etc etc will do it.

Road cars, with a level of noise legality surrounding noise, ride height and so on, simply not going to happen

You've got more issues with a 4" exhaust and ride height, then a 3"... And I was talking, perfectly legal road going cars. Not those running screamer pipes or anything.

Also, not every 400RWKW car runs turbos or forced induction either.

But I have seen FI cars, run with 400RWKW and 3"

rb26s13 Mentor

rb26s13

Posted
Posted
You've got more issues with a 4" exhaust and ride height, then a 3"... And I was talking, perfectly legal road going cars. Not those running screamer pipes or anything.

Also, not every 400RWKW car runs turbos or forced induction either.

But I have seen FI cars, run with 400RWKW and 3"

anyone with there car sitting stupidly low worry about exhaust height obviously hasnt taken much notice to there suspension except for it sits hektically low

with my twin 3" into single 4" i had on my silvia at the lowest point as it passed under the diff i had 110-115mm clearance from the pipe to the ground.. and no the car didnt sit like a 4wd

MBS206 Grand Master

MBS206

Posted
Posted
anyone with there car sitting stupidly low worry about exhaust height obviously hasnt taken much notice to there suspension except for it sits hektically low

with my twin 3" into single 4" i had on my silvia at the lowest point as it passed under the diff i had 110-115mm clearance from the pipe to the ground.. and no the car didnt sit like a 4wd

My reference to ride height, was in response to mr Nismo.

And I'd be saying your car was one of the nearly stupidly low cars if you only had 110 - 115mm of ride height. Seeing how the legal limit, when completely empty, is 120mm, and when maximum loaded, is 100mm... You had a max of 15mm before you were below legal limit... Something I'd call low.

I was simply pointing out, if you read the post I quoted, that a 4" gave more ride height issues then a 3"... Whereas, mr Nismo wasn't trying to state ride height issues with the person running a 3"...

rb26s13 Mentor

rb26s13

Posted
Posted
My reference to ride height, was in response to mr Nismo.

And I'd be saying your car was one of the nearly stupidly low cars if you only had 110 - 115mm of ride height. Seeing how the legal limit, when completely empty, is 120mm, and when maximum loaded, is 100mm... You had a max of 15mm before you were below legal limit... Something I'd call low.

I was simply pointing out, if you read the post I quoted, that a 4" gave more ride height issues then a 3"... Whereas, mr Nismo wasn't trying to state ride height issues with the person running a 3"...

wat you didnt read was were i said the lowest point of my exhaust was 110-115mm clearance and that was right were it went under the diff.. car never had any scraping issues and was far from "stupidly low"

the car even made it up my driveway which was almost impossible for any car that wasnt factory height

2BNVS Veteran

2BNVS

Posted
Posted

the limit is 100mm regardless, ive been pulled over and spoken to by police many times ( mine is 102mm) theres no rule for 120mm empty... i wouldnt call it stupidly low, never been held back by a single speedhump yet, just need to know how to take it and go slow,

i got a 4" turboback exhaust as well

my mums stock bmw is 115mm from its lowest point, wouldnt really call that level stupidly low these days

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