smithy 0 Report post Posted February 22, 2006 if your modafiying your 325i and u dont have alot of $$$$ to play with all u need to do is change the diff ratios standard 325i run a 3.70 if u change them to 4.10 this makes a huge differinc this will only work on manual one coz the autos allready have a 4.10 but any way if u change the ratios to a 4.10 u will have the same ratios as the USA spec M3 coz thay have the same gearbox as a normal 325i. Share this post Link to post Share on other sites
bravo 35 Report post Posted February 22, 2006 it will improve your acceleration, sure, but it reduces your top end and increases your fuel consumption. If you want more power turbo it Share this post Link to post Share on other sites
Carl 3 Report post Posted February 22, 2006 A few things First, learn to spell Secondly, this is common knowledge and is already posted in the performance/maintenance threads. Thirdly, changing the ratios doesn't increase performace Lastly, running a 4.11 diff instead of a 3.73 will chew through your petrol like no tomorrow. Ask me how I know, oh you can't, I locked the thread. Share this post Link to post Share on other sites
