chadders23 4 Report post Posted August 20, 2014 Hi sorry if this has been discussed, cant find anything and the search isnt working. Ive got a 323i m52b25 sedan, I understand they have been purposely restricted with intake/exhaust and maybe computer? Wanting to get atleast standard 325 performance out of it. Ive read online the intake off the 325 m50b25 can help with a good increase in hp, i was wondering if this done coupled with a better exhaust would get what im after? eg. 325/328 exhaust and m50 intake mods. How much of a difference would it make just freeing up the existing exhaust e.g removing cat? Anyone tried this? Any advice would help cheers. Quote Share this post Link to post Share on other sites
chadders23 4 Report post Posted August 20, 2014 Cheers mate yea think the exhaust will do the trick if i can get one for not too much $$$! Quote Share this post Link to post Share on other sites
