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Old 06-29-2002, 01:08 PM   #1
ryee
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exhaust setup e30

just wondering the difference between having cat to 2 pipes to muffler VS. cat to y pipe to one pipe to muffler.... which one is more adviseable?
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Old 06-29-2002, 04:19 PM   #2
'88 325e
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Having two pipes will cost twice as much obviously. Stick with a larger diameter single pipe. I still haven't called Brullen () about getting my car done.
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Hey guys/gals!,

Randy(empowerd), Kevin(straight_6), and I (Dave aka:'88 325e) started up Bimmercruize '01. Bimmercruize '02 is on Sunday August 11th! So if you need details about the show please contact us!
L8R,
Dave
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Old 06-30-2002, 11:28 PM   #3
Lil'Smoothie
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I went with 2 seperate 2' pipes from the cat back
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Old 07-01-2002, 11:35 PM   #4
straight_6
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I was told once that for the M20 motors a single pipe is better for it, and with the the M50/M52 it is better to go dual.

So when i had my M20 in I had a single 3" from a high flow cat back to a brullen. Now with my M52 i have headers and dual
2 2/4" all the way back. I did feel with my M20 a diffrents with the exhust, chip, and intake.

I ran my car at Cayuga stock (i'm not the greatest drag racer) my best was a 15.1 and with my mods the next year my best was a 14.6. Not great but a little better.
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Old 07-02-2002, 12:01 AM   #5
Jon@Bimmersport
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wow thats a good difference from jus exhaust, chip, and intake?? pretty good...or im jus used to the honda's gains...not really much with those 3.
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