I am Teh Edumacator.
Join Date: May 2005
Location: ATL, London, and Barcelona
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BimmerE39, Dinan doesn't keep a warranty under BMW--they offer their own warranty coverage replacing the coverage voided by the modifications.
The primary reason that Dinan doesn't offer higher boost for the M3 is that the bearings of the engine are a weak spot, and more power greatly increases the chance that they'll spin.
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1999 E39 540i/6-VF Stage 1 S/C, Dinan exhaust, Dinan strut+shock braces, Dinan ltwt flywheel + clutch, Dinan Brembo BBK, Dinan monoball, H&R Springs, Koni Yellows, M5 sways, Dinan forged 18" wheels, &c.
1995 E38 740i. Highly modded. Faster than you.
Sold 2-28-07: 1997 E36 M3/4, 8-30-05 RIP 1997 528i
Lindsay fan club member.