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      03-30-2013, 09:10 PM   #23
Sirius Black
Second Lieutenant
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Drives: 2013 F10 M5
Join Date: Jan 2012
Location: Annapolis, MD

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2013 BMW M5  [2.50]
Originally Posted by DisGuy View Post
no frank didnt send it out to AA. ill ask him on apr 6th and see what he says. yea i only did the custom test pipes, i heard you dont gain much from the 2ndary cats 5whp at most. i want to hit 400whp and ill be happy.
I wanted to be there on the 6th, but I have to work.

The pulleys are good for a least ten. I recently changed all the fluids (trans, diff, engine oil), fresh plugs, and air filter. Fabspeed claims a 15hp gain. I don't have any data to back the up, but it sure was breathing a lot better when I had it installed.