M3 automatic...most cost effective mods for performance (not including Supercharger)

[Walden]

Hello all
what are the best mods. for an M3 automatic to make it go 0-60 sub 6 sec and 1/4 mile 14 sec or less?
is it possible without paying as much as it does for a supercharger?

off the top of my head:

AA cold air intake?
Dinan auto tranny chip?
UCC exhaust?
AA ECU chip?

my friends stock Mercedes C43 is 0-60 in 5.7 sec....14.1 1/4 miles....5 speed automatic...it kills me!!!

thanks all!!!

[KmanM3]

Tranny chip, tranny chip, tranny chip.... Probably one of the few Dinan products which is worth buying IMHO.

[Sacramento M3]

Depends on what year automatic M3 you have. If you have a 95 I would definitely go for the whole euro HFM setup which includes
Intake
540i HFM
Larger Injectors
Software

Then I would definitely get headers (the new ones from Evosport look nice)

And of course an exhaust.

Then you can go to new cams and perhaps pulleys.....

If you have a 96+ there is not much you can do. You can still get intake/headers/exhaust/cams/software blah blah blah but you probably wont notice as much of a gain.

And I dont think all of these things combined will still get you sub 14 second. Check the other post you made as I have put down my 1/4 mile times in there. The Automatic M3's are weak, and unfortunately there is no aftermarket support for them

[BSH]

swap a manual 5-speed for your automatic!!!

[toussi1]

What do you mean weak? I have an AUTO 328I, if the M3 auto is weak what am i?

[Dinan330ic]

you're even weaker...jk jk jk jk jk jk

[Kudo540]

The best bang for the buck is gears, intake and chip. 95's came with 3.23lsd diff and 96 and up came with 3.38lsd diffs. I have a3.91lsd and it is great made a huge difference and it still is a very easy going daily driver. I would have even gone to a 4.10lsd if I would have fould one. At 80mph with 3.91 gears I am only at 3100 rpms.