I have a lot of Dinan stuff and while I love it, it's all over priced. The exhaust is always a great mod, not for any minor power gains but because it's a blast to listen to it around town.

Beyond that you are better off dumping money into some preventative maintenance and funding your "when the transmission fails" account.

Eventually you can move up to a 4.8 or E70...

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2002 X5 4.6is - Titanium Silver / Black Alcantara - Dinan Stage 2 - Bilstein/Eibach - Brembo BBK ----SOLD---
1993 318i - Brilliantrot / Tan - bone stock daily driver