gc8r 38 Report post Posted September 20, 2008 I saw a while back Dinan for its stage one headers just port and polish the stock headers and that still gives quite good improvements in performance. Now moving away from the marketing jargons and claims of "it will increase XX hp and torque" from Dinan, do you guys think this is actually quite a good idea to have this mod done? I had this done on my STi headers and it did yield some good improvements but I'm not sure if the same principle could be applied to a car much different to the STi. Any thoughts appreciated! Quote Share this post Link to post Share on other sites
Mike 1 Report post Posted September 21, 2008 was that for the US M3 or Euro M3? Big difference between the 2 manifolds. Euro ones are very nice items and any porting work may not yield as big an improvement as the US items. Quote Share this post Link to post Share on other sites
gc8r 38 Report post Posted September 21, 2008 was that for the US M3 or Euro M3? Big difference between the 2 manifolds. Euro ones are very nice items and any porting work may not yield as big an improvement as the US items. I think it was for the US ones, so even the exhaust side is different too? Quote Share this post Link to post Share on other sites
mr E34 11 Report post Posted September 21, 2008 Nothing wrong with your stock euro M3 headers. Quote Share this post Link to post Share on other sites
gc8r 38 Report post Posted September 22, 2008 Just wanted a bit more flow Quote Share this post Link to post Share on other sites
Guest SamSpargo Report post Posted September 23, 2008 euro headers are pretty damned awesome, I wouldn't mess around with them to be honest Quote Share this post Link to post Share on other sites
