How much HP have you folks gotten out of a 540i, without forced induction? I remember MacV had done some work on his engine, any details on that or other projects?
Also, I know there are kits that may provide around 335 HP for the 535i with a turbo, but I am curious what else may be involved for higher HP numbers, like the 400~ Alpina cars.
Last edited by CharlesAFerg; 03-01-2010 at 08:31 PM.
EuroLux:. Private Detail
E34 1/'89 ///M20 2.5i: Lachsilber
...referring to the kit here.
http://www.turbochargingdynamics.com/
EuroLux:. Private Detail
E34 1/'89 ///M20 2.5i: Lachsilber
Mine is running 272bhp as per the rolling road results, its only lost 4hp after 155k which is not bad although the guy did have to calculate it from the reading because he couldn't get it to stay in 3rd as it kept kicking down. I did have a K&N air filter fitted but I got rid of it after mixed results, sounded marginally better but no noticable gain, not what you were after I know but I thought I'd share....
I think the place to start is to get the intake in tip top shape and make sure your torque converter is not slipping as it zaps the power below 3k rpm. If thats done then go for a chip, its the the biggest bang for your buck without a turbo surely?
UK 1997 e34 540iA Touring, 1989 535i Sport - now sold, 1998 Mercedes CLK 200 Coupe