Page 1 of 2
Bosch MAF-Hitachi MAF, easy peasy!!!!!
Posted: Thu Aug 19, 2004 8:01 pm
by davidbilyk
Hello All, just a quickie, came across this web address one day whilst browsing for S4 information. Step by step guide on how to change over your unreliable Bosch MAF, for the later Hitachi one.
http://www.awe-tuning.com/media/pdf/RSK ... TE_2.0.pdf
Hope this is of use to you all!!!!!!
(PDF file by the way)
Dave
Posted: Fri Aug 20, 2004 9:29 am
by smurfbus
IIRC that needs new software also, so not so easy anless you live in states and have $$$ for the whole fueling kit!
Posted: Fri Aug 20, 2004 1:09 pm
by Dippy
The guide does say 'if requested' about the chip which implies that it's not mandatory. Since the guide also mentions fine tuning of 'drivability' issues, maybe that's what the new chip is for. So perhaps the Hitachi MAF can be used in place of the Bosch one without without a software upgrade, and reliability will be improved.
Posted: Sat Aug 21, 2004 10:42 am
by Druggie
How many have lost a bosch maf?
Posted: Sat Aug 21, 2004 12:50 pm
by SimonS4MTM
yep
Posted: Sat Aug 21, 2004 9:52 pm
by toasty
me 2 !
Posted: Sun Aug 22, 2004 1:37 pm
by Joshie
Oh yes
Posted: Sun Aug 22, 2004 3:39 pm
by DavidT
Hmm, something for me to look forward too I guess
Posted: Mon Aug 23, 2004 12:14 pm
by Dippy
3 years and no problems (it's a Hitachi
)
Posted: Mon Aug 23, 2004 12:25 pm
by DavidT
OK, dumb question, how do you tell which you have - spanners or VAG-COM ?
I suspect mine will be the old one but thats OK, I am old too.
Posted: Mon Aug 23, 2004 12:31 pm
by Dippy
Mine has Hitachi written on it, which I can see just by inspection (with engine cover off). I think that Hitachi was only fitted to very late models.
Posted: Wed Aug 25, 2004 11:39 pm
by AFAP18
From 2001 and beyond, they were hitachi.
New wiring is needed if you want to do this setup.
Best Wishes
WOT
Posted: Thu Aug 26, 2004 2:41 pm
by Verruckt
Dippy wrote:The guide does say 'if requested' about the chip which implies that it's not mandatory. Since the guide also mentions fine tuning of 'drivability' issues, maybe that's what the new chip is for. So perhaps the Hitachi MAF can be used in place of the Bosch one without without a software upgrade, and reliability will be improved.
NO.
The voltage transfer functions for the two sensors is completely different. You absolutely need different software. For US spec, it's A box to M box conversion.
Posted: Thu Aug 26, 2004 5:05 pm
by belgianS4
Yep count me in lost one to...
Grr Bosh
Posted: Thu Aug 26, 2004 11:35 pm
by KayGee
Is this an ECU swap(plus the above change for the MAF) or does it require a rewire?