Differences in Exaust's

[jrhaile]

I've heard people talk about straight pipe and different named pipes.. what's the differences and what's the best? Also what are the down falls of a straight pipe

[jllphan]

My working defintion of a straight pipe would be omiting the cat. Also referred to as a test pipe, they are great for maximizing power, but will not pass emissions.

[Deloriant]

Actually if you check the specs, bmw's don't fare much better with straight pipes...which is not normal for cars. They are also about the loudest godamn things you will hear in your life.

[Kevin325i]

You also loose low end torque.

[jrhaile]

ohh okay...I think the exaust my buddy built for me kind of sucks.. he swears by it on his m3, but since it was installed, it seems as if I've lost some hp.. I'm looking at AA's OBD1 1000 dolla package which includes a new aa exaust, chip and intake...

[BLACKBMW]

Originally posted by jrhaile@Aug 24 2004, 11:06 PM
ohh okay...I think the exaust my buddy built for me kind of sucks.. he swears by it on his m3, but since it was installed, it seems as if I've lost some hp.. I'm looking at AA's OBD1 1000 dolla package which includes a new aa exaust, chip and intake...

Can you enlighten me about this $1000 dollar package and where I can check it out...

Im in the UK so I dont know who the AA is that you are referring to

Thanks

J...

[BMWBeauty416]

Originally posted by Kevin325i@Aug 24 2004, 11:06 PM
You also loose low end torque.

yep yep no back pressure... My brother had staight pipes with all the cats taken out on his '92 325is and ended up deciding to put on a high flow muffler, I will e-mail him (b/c little bro is not so little and off at college ) and figure out what brand it was...

~*Teg*~