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      03-30-2013, 03:39 PM   #21
Sirius Black
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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
your var is making some good power. i have franks tune custom, primary cat delete,eissenman race, and made 371whp. i guess that pulley and drop in filter make a big difference. which pulley are you running
Macht Schnell pulley. Do you have a stock xpipe with the secondary cats still? The Fabspeed xpipe did do a lot to free up that exhuast flow. That was the first part of the exhaust I changed, then the AE rear section, then the TTPs.

Some of the difference could also come from whatever Karl down at Active Autowerke added to the file. Frank sent it to him for some additional tweaks on which he had been working.

Last edited by Sirius Black; 03-30-2013 at 03:52 PM.