Exhaust questions..

[Wes]

Hey guys,

My 325turbo needs a new exhaust system, the current system is a "previous owner patch job" :yuck:

So, its not going to be a daily drive, and i want it loud.

Can i run the car safely without the last muffler? Just the middle box and then strait pipes out at the back (or even behind the passenger side front wheel)?

Thoughts?:thumbs:

 

[Twinz]

You can run straight through pipes. The less exhaust restriction on a turbo car the more power but only if you and the neighbours can live with the noise. Install two resonators to dampen the sound....and enjoy. I currently run complete straight pipes/no cats only the rear mufflers. I only kept the rear mufflers because the car made a freak of a noise.

But my summer project is to get rid of it completely. I am looking at longer resonators (18inch) which are on their way from the US. Gonna be a loud & fun summer.

 

[Wes]

You can run straight through pipes. The less exhaust restriction on a turbo car the more power but only if you and the neighbours can live with the noise. Install two resonators to dampen the sound....and enjoy. I currently run complete straight pipes/no cats only the rear mufflers. I only kept the rear mufflers because the car made a freak of a noise.

But my summer project is to get rid of it completely. I am looking at longer resonators (18inch) which are on their way from the US. Gonna be a loud & fun summer.

My neighbors are BMW people too:thumbs:

 

[Raybimmer]

What size pipes will you run ? dual 63 mm ?

 

[Twinz]

Ray, if you asking me then the answer is no. Considering a single 3.5 inch pipe ending in a dual tip.

 

[Wes]

I was thinking single pipe with twin tips too..

 

[Raybimmer]

A single 89 mm has the same area as two 63 mm pipes , so should flow the same .:thumbs:
I was wondering about the weight . Which will be heavier ?

With all the speed humps a single 89 mm may be a bit low on a daily drive .( Here in East London over some humps I just touch the e36 328i exhaust - everything is std on the car ,tyres height etc !!!! ) :argh:

 

[moranor@axis]

a single pipe with the same area will flow slightly better than two pipes so you could go a little smaller than 89...

what power is it putting down?

 

[George Smooth]

Hey guys,

My 325turbo needs a new exhaust system, the current system is a "previous owner patch job" :yuck:

So, its not going to be a daily drive, and i want it loud.

Can i run the car safely without the last muffler? Just the middle box and then strait pipes out at the back (or even behind the passenger side front wheel)?

Thoughts?:thumbs:

You can go straight through. Relative to you power output I would choose the pipe. Remember the thicker the pipe the heavier it is so don't get carried away.