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      02-25-2017, 12:25 AM   #4
dsocold
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American Samoa
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Drives: f06 640i GC. E82 N54 135i
Join Date: Apr 2015
Location: new york

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check engine light will come on. and yea get the mhd, the dinan tune will not take advantage of the catless downpipe like a tune thats specifically created for that purpose. with dinan maybe expect to see about 5hp from the better flow with a better/faster spool up. moving to mhd will blow your mind away even without the downpipes.. i came from cobb ap and mhd is just crazy smooth and fast
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