MAC-14 Diagnostics

[Cody Forbes]

Are you super positive that all rev-limits are set correctly? Theres soft 
and hard cut rev limits that need to be set (same menu for both). Check that 
for some silly reason the launch control isn't activating... set the launch 
RPM to 12,000 or such. I'll break out the laptop to double check other 
possibilities ASAP.

Also double check your PWM settings on the injectors (constants menu). I 
forget if you had high or low impedance injectors.

Do you have a timing light, particuarlly an inductive type that reads off 
the plug wire? You can get 'em at Harbor Freight if need be.Hook it up to 
the #1 plug wire and watch the timing as you increase revs. I hate 
free-revving (no load) that high, but really it won't be an issue for this 
test. Watch for the strobe to die off, flicker (because at that engine speed 
it would be basically on constant), or mayve you'll notice the timing mark 
to be waaaay in left field.

-Cody


Ben Swann wrote:
> I have not managed to get the diags working properly. Know how to
> with MAC-11, but some changes in MAC-14.  I think I just need to
> revisit my wiring.
>
> The problem I'm having, I mentioned the other night.  The engine just
> kind of craps out above 5K.  It does this irregardless of load (MAP).
>
> Ben
>
> -----Original Message-----
> From: Cody Forbes [mailto:cody at 5000tq.com]
> Sent: Tuesday, September 25, 2007 11:17 PM
> To: Ben Swann; quattro at audifans.com
> Subject: Re: MAC-14 Diagnostics
>
> FYI my MAC-11 running ignition only doesn't "freak out" at all, even
> with
> the wiring for the CIS components deleted. When checking codes it
> always
> read 4444 unless there was an actual issue withing the stuff that was
> left.
>
> This doesn't answer any of your questions, but usefull anyways so you
> know
> that all codes flashed should be legit issues.
>
> -Cody
>
>
> Ben Swann wrote:
>> I'm trying to run codes on my MAC-14 ECU which is currently setup to
>> do only ignition
>> for my Megasquirt setup.  The wiring harness has been completely
>> transplanted, and I
>> installed connectors for the "dirty" OBD to connect to VAG-COM.
>> VAG-COM is not picking
>> up on it.
>>
>> Has anyone retrieved codes via VAG-COM for the MAC-14?
>>
>> I will try connecting to flash the codes, but would be nice to use
>> the OBD features.
>> Anyone had much success flashing the codes using fuse and CEL?  I
>> don't have identical
>> wiring with Fuel Pump Relay, but have wired according to Bentley.
>> Wondering if I am
>> missing anything for this.
>>
>> Ben
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