Although I basically do my own tuning I have worked with Solomon at LT1Pcmtuning and am using his timing, fueling and transmission changes that seemed to wake up my cam, along with the tuning modifications I have done. Since I respect his 'intellectual property' I do not share my tune. What I do have is a stock '95 M6 .bin I can send you that you will have to tweak the gearing (if different), and maybe up the idle speed and closed TPS timing in the 400-1200 RPM range to so you can get it running smooth enough to test it out. If it works you can copy all your other changes over.. Interesting even with you injector constant 2% higher than stock your BLM's look good so your tune is working OK as far as normal driving goes.

 

Bob, I respect that with your tune. I was just out playing around with the car.

I found on my old laptop a totally stock 95 M6 bin from a T/A, and also the original tune PCMforless sent for my current setup.

I tried the PCMforless tune and the stock 95 tune, both with the same results, although the stock tune seemed to do it worse.

I noticed in my logs from today that it holds correct PE fueling until about 3800 RPM, then the ST trims start pulling fuel and making it lean.

And yea, the car runs great besides this issue. Its nice and snappy and pulls hard until this issue comes into play, then it feels a little flat on the top end from it going lean. Which shows since I only picked up 1mph with this cam setup over stock.

I am going to call Bryan at PCMforless Monday and see if he ever had this issue...maybe my PCM is FUBARed or something...it isnt throwing any DTC codes on sensors.

 

If you can't do it the easy way then just make sure you are a little rich when going into PE (taking away fuel) so it won't be trying to add fuel, if that's what it's doing. If it's a little rich when hitting PE, then it will go to 128 and stay there.

 

Kevin the LT BLMs are locked to 128 and dont move. Its the ST blm trims that are pulling fuel in PE and cant be controlled.

 

Agree, that's just weird. Maybe that PCM is an old program or something and needs a dealer update. I would see if you could get a 95 pcm to borrow and see if that acts any differently - but I'm losing track of all the stuff you already tried. Only good thing is that the ST trims shouldn't have as much an effect on fueling as the LTs do. Still, you need to somehow get it so that it is consistent.