E46Fanatics - View Single Post - My search for more NA power (Dyno time)
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Old 09-10-2010, 10:36 AM   #149
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Join Date: Aug 2009
Location: St Louis, MO
Posts: 3,008
My Ride: 01 330x-xi
Originally Posted by aggieE46 View Post
BMW switched from a Y in the 323 and 328 to a dual in the 325 and 330. I don't understand your statement.
I'm asking how you decided where to place the y pipe. what distance from the headers? Or was it just kinda a guess?
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