View Full Version : How much Hp gain?

08-25-2005, 05:05 PM
(Question 1)
How much Hp would a 1997 540i gain if the factory exhaust was removed?
Does anyone have any idea.

(Question 2)
What other mods can be performed to get more power, other then FI?

08-25-2005, 07:17 PM
you should PM MarkD for a ECU flash

08-25-2005, 08:46 PM
you should PM MarkD for a ECU flash

Thanks bud. I have allready done that. Anything else?

08-25-2005, 09:31 PM
depends on how much money you want to spend, headers with a full exhaust system would cost a pretty penny but I think it is worth it, a M5 diff, Catcams has some agressive cams for the 540

08-26-2005, 08:21 AM
Poor man's supercharger- M5 diff swap(3:15 w/LSD) Its not really more power but will help your 0-60 a helluva lot, not to mention winter driving with the LSD

May have one for sale with all neccesary parts soon if interested check for sale section or PM me

Big Chin
08-26-2005, 08:32 AM
Get a cold air Intake, you can gain some numbers there... Getting the Marky Chip done was GREAT he is a great guy to work with...Done right and quick.. to gain more power withough breaking your budget.. Intake, Headers, Manifold, Iginition, and ECU.. those together are a soild.. 60 - 80 HP and torque.. I think we talked about the stock piping on the 5 Series and it came out to be 2" 1/2 which isn't that bad.. maybe just a high flow mufler and cat are needed.. Just so happens Paul is trying to sell a GruppeM Intake talk to him :P