Author Topic: Power mods for the M42 (Read 19066 times)

sbarton · « **on:** October 27, 2009, 06:02:00 PM »

How do you get more HP to the M42?

Already has a conforti chip, K&N filter, and exhaust.

-Scott

monty23psk · « **Reply #1 on:** October 27, 2009, 06:04:25 PM »

electric fan conversion, remove power steering.

sbarton · « **Reply #2 on:** October 27, 2009, 06:08:13 PM »

oh yeah, forgot about that it alread has the efan conversion.

fiftytakedowns · « **Reply #3 on:** October 27, 2009, 07:15:13 PM »

you could also free up torque with an aluminum flywheel, you can go with some mild/wild cams (regrinds or shrick). do some headwork, go ITBs.

HATER-PROOF · « **Reply #4 on:** October 28, 2009, 06:22:57 AM »

get some heat wrap and wrap your headers and exhaust all the way to the muffler.

papercutout · « **Reply #5 on:** October 28, 2009, 12:22:14 PM »

And some different injectors - mustang in America, Vectra in Europe.

tjts1 · « **Reply #6 on:** October 28, 2009, 07:06:43 PM »

Money. Lots of it.

AcSchnitzer318is · « **Reply #7 on:** October 28, 2009, 09:15:55 PM »

Quote from: tjts1;80585

Money. Lots of it.

Best answer...

Spent $$$ on mine and went turbo. I had a "quick" m42 before, but now it feels like it has "real" power. I'd give numbers but have not dyno'd yet.

iamcreepingdeath · « **Reply #8 on:** October 29, 2009, 12:50:21 PM »

Downing Atlanta Supercharger.

CenCal318i · « **Reply #9 on:** November 16, 2009, 03:56:26 AM »

What is the price for a downing Atlanta?? Would it work the same if I upgraded to the mustang injectors and some of the other mods listed in this thread or is it tuned just for a stock engine?

iamcreepingdeath · « **Reply #10 on:** November 16, 2009, 09:15:26 PM »

DASC is like $3500 or so.

best bang for the buck is if you can find a well-priced S50.

jgraves · « **Reply #11 on:** November 17, 2009, 07:46:53 AM »

A lot of people are buying the S50 and S52 M3 engines, but with the transmission you're talking about $5k-$7k then another $3500 to get someone to put it in your car. Here's the link to KO Performance. They specialize in BMW turbos and superchargers.

http://www.koperformance.com/BMW/turbo_superchargers/index.htm

sbarton · « **Reply #12 on:** November 19, 2009, 01:05:34 PM »

It already has a custom cat back exaust. How much HP could I gain from deleting the Cat? FYI, this is for a race car so no need for emissions or anything else.

-Scott

e30guydownunder · « **Reply #13 on:** November 19, 2009, 04:54:29 PM »

On my race car I have:

No Cat, P/S, A/C, Heater Plate and replaced fan with electric.

M20 flywheel woke it up a hell of alot (no extra power).

Next N/A mods would have to be headwork, ECU, then Intake.

Me I'm going turbo and E85

tony92ic · « **Reply #14 on:** November 19, 2009, 11:52:40 PM »

Generally deleting a working cat gains you no power. or at most an insignificant amount. Cats are free flowing enough that they aren't the pinch point until you get some serious mods. Turbo, displacement increase, etc. and still probably not much gain on our engines.

On a pure track car there's no harm in removing it, it still won't gain much power, but you will save a few pounds.