[Diy_efi] pic based afm -> maf conversion
hoshy at hoshy.co.uk
Wed Jan 18 14:01:31 CST 2006
John Smith wrote:
>> From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]
>> On Behalf Of Ashley Evans
>> Sent: Wednesday, January 18, 2006 12:10 PM
>> To: diy_efi at diy-efi.org
>> Subject: Re: [Diy_efi] pic based afm -> maf conversion
>> Regarding "fooling the ecu", I have never been a fan of fooling an ecu.
>> I have seen applications where it worked, but with so many options these
>> days regarding engine management, just step up get proper control over
>> the situation so that you and the ecu are thinking in lock step. Easy
>> for me to say without knowledge of time, budget and desire to "step up".
>> Have fun with it,
> I agree. Fooling the ECU and even the MAF sensor itself is still popular
> in the Mustang crowd. I had a C&L MAF on an '89 GT that had sampling
> tubes you could swap if the injector size was changed. Their immediate
> competition was another company that would actually adjust the sensor
> itself based on injector size. They both fooled the ECU and both had
> their share of problems. The common consensus was that altering the ECU
> program was the best. Just my experience.
I also agree. replacing the whole management system, or altering the
parameters of the existing ecu program is the "right" way to do the job.
There are some drawbacks though. Mainly the proprietary nature of these
systems. You either need to spend an awful lot of time to effectivly
reverse engineer. Or pay a lot of money.
Neither of which are practical for an amateur like myself who's just
starting on the learning curve :)
As I mentioned in my first post I am looking to extend the system to
include timing. Maybe even develop a full PIC based replacement... I
even thought about fitting it into a standard motronic ecu case with a
"mapping" connector also fitted. (daydreaming :) )
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