Okay I am using an ARAP variation on my 89 Vette. it is the $6E code.

I was given the info that hex 247 is for EGR. Crrently it is set for 1E, so I changed just that variable to FF and burned a PROM and stuck it in the car. Well, When I tried to start the car.. when I turn the key to the on position.. the electric fans kick on (this is the first sign of abnormality). As soon as I start the car I get a SES light. if I put the old PROM in it works fine. I tried burning 2 other PROM's with the new change in case the first was bad..well same problem.

One thing I noticed on the "Tuner Made" PROM I have is that there is 2 wires running from power and ground of the PROM to a different Location on the Memcal and they have location 247 set to FF and their PROM works fine.. (no SES Light)in my car.

Is there another way around this? if not I will modify one of the spare MemCals I have for that type of set-up but I really need to disable the EGR..

Thanks

------------------
-=Jeff=-
89 Corvette Coupe White with Black Grand Sport Stripe
-=ICON Motorsports=-
Check out my mods on My '89 Vette

 

Did you just change the one location, or did you also calculate a new checksum? If you didn't caclulate a new checksum, that's likely your problem.

 

Yep I believe that this is the problem.. I will try it tomorrow

Jeff

 

Wouldn't it be easier to use a bin editor like Tunercat or Winbin?

I know the EGR variables are included in the latest 6E definition for Winbin....

http://www.area51.org.il/~zaphodb/gmecm/WinBin14.zip
http://www.area51.org.il/~zaphodb/gmecm/6Ev007.zip

------------------
ZaphodB a.k.a Carl Andersson - zaphodb@faxancruisers.org
'89 Camaro IROC-Z 5.7L TPI - Mods under construction :-)
Custom ARAP Chip Under Development/180 t-stat, Edelbrock TES Headers,
SLP Airfoil, K&N Filters, Accel 8mm wires, Relocated MAT, AFPR @ 45 PSI

 

ZaphodB,

As I mentioned before I am using that versionof WinBin and YOUR Ecu Def file you also have linked.. And cannot find a EGR TEMP variable.. Where is it??


All,

New PROM Works fine now...

Thanks

Jeff