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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 02-12-2010, 10:55 AM   #1 (permalink)
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Ideas

Hi Guys
Any free/cheap suggestions to improving my acceleration?
Close to 140 bhp now, but just want a pinch more.
Can i exchange my inlet for one from a 2.5 for example?
Any help with this would be sweet.
Thanks in advance.
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Old 02-12-2010, 12:17 PM   #2 (permalink)
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What have you already done to it?
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Old 02-12-2010, 06:50 PM   #3 (permalink)
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Chip is the only thing that is really worth it unless you plan on spending major money/time working on it to get power out of it.

m20 flywheel/clutch is a good upgrade if you have a dual mass flywheel; cams can be reground, but that's not cheap and it's a lot of work ...

Really, IMO, if you want more power than what you're gonna get with a good chip, you might as well look into swapping your engine for a m50/m52/s50.

edit: as for the intake ... nothing you do will get you power: the real bottleneck/restriction is the barn door air flow meter. That said, BMW got pretty much everything they could out of this motor within reason: it has dual butterfly throttle body, intake manifold with dual runners, factory headers ...
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Old 02-13-2010, 01:50 AM   #4 (permalink)
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Old 02-13-2010, 12:45 PM   #5 (permalink)
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Thanks for your replys
M3 Would obviously be the choice, but not my wallets.
I was thinking more along the lines of superchip.
What if i take the MAF air flow sensor unit from a 2.5 and the inlet?
Any body know.
Injectors?
Or i am just lost in hope of some extra drifting power?

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Old 02-13-2010, 02:33 PM   #6 (permalink)
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Originally Posted by kandi08 View Post
Thanks for your replys
M3 Would obviously be the choice, but not my wallets.
I was thinking more along the lines of superchip.
What if i take the MAF air flow sensor unit from a 2.5 and the inlet?
Any body know.
Injectors?
Or i am just lost in hope of some extra drifting power?
You can't take a MAF from a m50. It is a hotwire maf and the m42 uses a vane AFM ... they work in completely different ways. There are conversions out there, but they are quite pricey. Look up splitsec.com ... I know they used to make a MAF conversion kit. If you meant a larger AFM from a m20 2.5, that wont work either ... the a/f ratio will be all out of whack.

Really though, if you can't afford a m50, start stripping the car out ... from what I've seen online, there is at least about 250-300 lbs that can be lost. If that's not an option either ... I don't know what to tell you, but it's gonna be pretty hard to drift.
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Old 02-13-2010, 04:06 PM   #7 (permalink)
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Does Downing Atlanta still make a supercharger kit for that engine?
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Old 02-13-2010, 07:32 PM   #8 (permalink)
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I don't know if they still do, but honestly, I don't think it's really very cost effective at all ... you spend 4 grand to basically get the same power as a stock M3 when a m50 swap with s50 cams, intake, chip and exhaust will only set you back half that and make the same power ... for the cost of a DA supercharger for a m42, you can probably have a aforementioned m50 swap with a low(ish) boost turbo setup.
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Old 02-14-2010, 12:03 AM   #9 (permalink)
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Agreed.
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Old 02-14-2010, 11:19 AM   #10 (permalink)
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Thanks guys, i will check it out.
Will keep you posted on what i do next.
Stripping it out a bit sounds pretty cool though.
Thanks
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