94-95 OBD1.5 2bar MAP and Wideband Support

Subscribe
Feb 3, 2018 | 10:15 PM
  #1  
Have no idea if you guys use this system or not-I know it's orignally on the 4th gens, but there are a lot more V6 guys that do tuning here. I've been working with this PCM for a little over two years now, and have worked out some bugs in the ALDL link, and added a few more table lables in the XDF...AND got 2 bar MAP support and if you're willing to do some intricate soldering inside the case, added a field to datalog a wideband O2 in the main datastream.

Robert Isarr did the original ADX/XDF for these PCMs, and they've been available for the front-wheel drive guys for a while. All I have done is added patches to allow the use of the 2Bar MAP sensor from any GM car that got one (I've tested the Supercharged 3800 style MAP and the Turbo Sky MAP sensors, I am not aware of a third type) and both of them track correctly with the new MAP sensor code. That means this PCM is now turbo-ready up to 14PSI of boost! Both the fueling and spark tables have been modded to run up to 6400RPM, and a second fueling and second spark table have been added for operation between 100 and 200KpA and 6400RPM.

These PCMs do NOT require chip burning, but they do require a flash program, I personally use Winflash from Tunercats (15$) and I know others who use MadTuner's flash software however I do not know where you'd get it these days.

I have not tested this on the auto transmission, however none of the auto trans code has been altered, so it should still work. I run a manual transmission with mine.
2.5 and 3 bar sensors are not currently supported. It could be done, but I can't make it a selectable thing yet. I'm not that good a programmer.
Wideband O2 sensor input requires lifting a pin from the Event CPU, installing two resistors and a jumper wire, and selecting an unused pin on the blue Event board connector to clip and solder that jumper wire to. It is not for a beginner at soldering.

Quirks:
Baro updates MUST BE disabled. Set Baro update Max RPM to 100, that way you'll never update the baro sensor while the engine is running. It will always use the initial turn-on measurment, until you shut the car off an turn it on again.
For F-body cars, I think the Manual-trans code will work fine as-is. If you're running an S10 T5 trans though you'll want to put the L-body speedometer parameters in there or you won't get over 5 MPH before hitting the speed-limiter. I have no idea why this is, but I can't test it as I do not have an F-body T5 to test with.

EDIT: Apparently ADX and XDF files are not valid file extensions here-Not sure what to do about that. I guess PM me and I can email them to you, or I can link you to 60*v6 forums's Tuning section, where they are posted.
Reply 0
Feb 4, 2018 | 10:34 AM
  #2  
Re: 94-95 OBD1.5 2bar MAP and Wideband Support
You can zip the files first, then post them. Or add/change the extension to .txt with instructions to rename them back to .xdf/.adx

RBob.
Reply 0
Feb 5, 2018 | 10:41 AM
  #3  
Re: 94-95 OBD1.5 2bar MAP and Wideband Support
I assume you altered the scalar and offset for the MAP sensor.
If you want to use or make it available for use on a 3 bar or other just make the xdf have those addresses and put in the notes the values to change to to use a certain map.

I did the same thing on the $8d setup.

You’ll also want to change the high map error setting otherwise boost will set the code.
Reply 0
Subscribe