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**GDJ** · 05-23-2011, 07:19 PM

Honestly, the BMW's are a different beast vs the japanese built cars. For the most part, the exhaust and intakes on these are pretty damn good right from the factory. You might gain a few HP, but nothing major can be gained from bolt-ons. Big HP increases means finding a reground camshaft and that can be some serious $$. Tuned exhaust headers help a fair bit, but again, serious $$ for the right ones. For the most part, bolt-ons are really good at depleting your bank account.

Best bang for the buck: Chip the ECU. Most HP for the $$. You'll have to run Premium (91 octane), but the gains are nothing to sneeze about.

I wish you well on your quest.

05-23-2011, 07:19 PM	#3
GDJ Name: GDJ Title: United Newb Status: Offline Join Date: Aug 2010 Location: Edmonton, AB, Canada User not setup in Rate My Car. Click here to set it up. Your Ride: STILL SEARCHING FOR ANOTHER BMW	Honestly, the BMW's are a different beast vs the japanese built cars. For the most part, the exhaust and intakes on these are pretty damn good right from the factory. You might gain a few HP, but nothing major can be gained from bolt-ons. Big HP increases means finding a reground camshaft and that can be some serious $$. Tuned exhaust headers help a fair bit, but again, serious $$ for the right ones. For the most part, bolt-ons are really good at depleting your bank account. Best bang for the buck: Chip the ECU. Most HP for the $$. You'll have to run Premium (91 octane), but the gains are nothing to sneeze about. I wish you well on your quest. __________________ 1994 530i 5 speed - RIP due to a dipshit that can't do overshoulder checks and ran over the front end with his Jeep! 1989 325i - RIP due to a knucklehead that rammed the car in the butt doing 50 km/hr while I was stopped at a intersection!! New ride: 1998 318i