[Diy_efi] Motronic fuel cut on excess boost??

[Mike]

What I did on a Kombi back in 82 was change the spring tension,
those flap type AFMs have a slotted wheel with a multi-turn
spiral spring, by making the tension large means less output
voltage for the same air flow [Remember to count it if you change it]
*but* you'll need to either raise the fuel pressure to compensate
or use larger injectors...

Thats the simplest solution I can come up with - without messing
with the ECU,

rdgs

mike

At 04:59 PM 30/8/2002 +0100, you wrote:
>Friday, August 30, 2002, 5:06:56 AM, you wrote:
>
>
>> Chris, you could try putting a potentiometer in line with the MAP
>> sensor to scale the output from the MAP.  I've thought about doing
>> this, but it does it all the time, even in vacuum, which isn't good.
>
>> --Perry
>
>AFAIK it doesn't have a MAP sensor, works of AFM (swinging gate type)
>throttle pot and RPM, with normal temp trimming. If it HAS a MAP sensor
>I haven't found it! UK spec 1988 Volvo 740 turbo intercooler, on
>Motronic, the one with 2 flywheel sensors, one counting ring gear
>teeth, the other about 90 degrees BTDC ( a metal tab on the flex plate,
>it's an automatic). Cheers.
>
>
>-- 
>Best regards,
> Chris Wilson                           mailto:chris at formula3.freeserve.co.uk
>                                       http://www.formula3.freeserve.co.uk
>
>
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