A quick question about MAF ?

Need technical Q/A then you're in the right place

Moderator: martauto

User avatar
Stevin
E30 Zone Regular
E30 Zone Regular
Posts: 447
Joined: Tue Jun 14, 2005 11:00 pm
Location: JHB South Africa

Post Mon Oct 10, 2005 10:46 am

Ok, I know that once u have it installed, u have to take the car to get chipped so that it can be mapped or something.

What I want to ask is can u still run the car with it not being tuned ? I'm guessin it would run like if u don't have ut AFM plugged in... very hesitant, and the car won't idle that sort of thing ?
Top
User avatar
Stevin
E30 Zone Regular
E30 Zone Regular
Posts: 447
Joined: Tue Jun 14, 2005 11:00 pm
Location: JHB South Africa

Post Mon Oct 10, 2005 2:05 pm

??
Top
MONSPORT42
E30 Zone Regular
E30 Zone Regular
Posts: 506
Joined: Mon Jan 10, 2005 11:00 pm
Location: Portsmouth

Post Mon Oct 10, 2005 2:12 pm

You won't be able to drive it all until it's connected up to the new chip. E30 ecu will not read the signals from a MAF. You'll to either tow it there or do the fitting outside the tuning shop!
Good luck
Image
YOUR LEFT FOOT'S FOR BRAKING
Top
M5pilot
E30 Zone Addict
E30 Zone Addict
Posts: 4968
Joined: Sun Jan 30, 2005 11:00 pm
Location: Luton

Post Mon Oct 10, 2005 3:05 pm

As per Monsport, youll need the unichip installed to get it to run properly.

Bexleys are the only place who offer it at the moment.
Top
garyp_E30_325i
E30 Zone Regular
E30 Zone Regular
Posts: 724
Joined: Mon Jun 20, 2005 11:00 pm
Location: Sunny (I wish!) Glasgow

Post Mon Oct 10, 2005 3:34 pm

The AMF uses a 5V signal and the MAF a 1V signal (or there abouts). Hence the MAF won't communicate with your ECU. You're buggered unless you can get a chip which is already mapped to work with a MAF... maybe Ant can help with this????
'89 325i - was an SE but not anymore, was bronze-beige metallic (yeuch!) but now techno-violet (thankfully)
'89 Toyota Corolla GTi-16 - track, hillclimb & sprint car (yeeha!)
'08 Buell XB12Ss - American engineering at it's 'best'... good fun though
Top
User avatar
hoshy
E30 Zone Wiki Guru
E30 Zone Wiki Guru
Posts: 4118
Joined: Tue Jan 18, 2005 11:00 pm
Location: Munich

Post Mon Oct 10, 2005 3:46 pm

Can just a remap sort this out?? I didn't think it could?

afaik you need something like unichip not only for the voltage difference but for the type of signal. I heard one is linear and the other exponential or something.

I'm sure there's a site (I may have even posted a link.. not sure) that shows a (calibra?) which has a little custom box fitted, homemade and quite simple, that changes the signal as needed. I'll see if I can dig it out.
E46 M3 CSL but dreaming of another E30.
Top
User avatar
hoshy
E30 Zone Wiki Guru
E30 Zone Wiki Guru
Posts: 4118
Joined: Tue Jan 18, 2005 11:00 pm
Location: Munich

Post Mon Oct 10, 2005 3:52 pm

couldn't find that link but found this company doing some maf kits for a few BMWs only m3 in the e30 range but I'd bet the kits are modifiable or you can get them to change the kit as needed.

http://www.splitsec.com/products/mafkits.htm
E46 M3 CSL but dreaming of another E30.
Top
User avatar
hoshy
E30 Zone Wiki Guru
E30 Zone Wiki Guru
Posts: 4118
Joined: Tue Jan 18, 2005 11:00 pm
Location: Munich

Post Mon Oct 10, 2005 3:58 pm

Ah ha, foudn it. but the page is no longer available. Fortunately google has a cache of everything but the pictures... this should be adaptable to any e30.

http://66.249.93.104/search?q=cache:TPI ... hall&hl=en
E46 M3 CSL but dreaming of another E30.
Top
User avatar
Stevin
E30 Zone Regular
E30 Zone Regular
Posts: 447
Joined: Tue Jun 14, 2005 11:00 pm
Location: JHB South Africa

Post Tue Oct 11, 2005 8:16 am

Thanks guys, I'm not in the UK... but I now know.

Here is a diagram, that a guy over in Malaysia did for me, I'm going to just get the guys to remap the Dasktec Unichip.

Image

Seems fairly simple to wire up.
Top

Return to “E30 Technical Help”