Cheap Power Upgrades

hello once again guys,

just wanted to know what some of you guys thought would be the cheapest/ most efficiant performance upgrade for my stock 325i. i've been looking into under drive pulleys and cold air kits.. priced a borla cat back for about 900.00 roughly..

any ideas guys?

who is the most resourceful aftermarkets bmw part supplier out their?

hello once again guys,

just wanted to know what some of you guys thought would be the cheapest/ most efficiant performance upgrade for my stock 325i. i've been looking into under drive pulleys and cold air kits.. priced a borla cat back for about 900.00 roughly..

any ideas guys?

who is the most resourceful aftermarkets bmw part supplier out their?

What year is your 325i and what is your budget?

bavauto.com best place to look, type in your car information select what kinda of items youre looking for, and it should list some items out for you.

You want real power increase? B&B exhaust system really added very noticeable power to my E36. I have an older version so I also changed the chip out with an Autothority chip programmed for that new exhaust system. Added the cold air Autothority K&N cone filter on the high flow intake & it really rocks now. One thing, with the new chip, I have no top speed limiter & increased RPM by 600. I now MUST use 91 octane fuel as the knock sensors have been taken off line with the new chip. All well worth it as I would NEVER put regular gas in the car.