Tuning available for 93-95 L32 and L82 PCMs

[badsam]

Sounds pretty cool...

Will this new tuning software work with OBD1?

[Google Adsense]

[robertisaar]

one of the great (former) mysteries of the E-side...

it's actually a table used to filter and calculate the EGR flow due to solenoid combination changes.

anyways, i post this since i have roughly 98% of the E-side completely documented, the 2% that remains is either too insigificant to matter or is just too convoluted to understand. so not quite nAst1 completeness, but pretty close. i just wanted to post a pic as well to give everyone something to get confused over.

the T-side... less so. to me, the 4L60E control scheme is fairly difficult to understand, but most/all of the 4T60E derived stuff is easily recognized.

[SappySE107]

We gotta get you on some bmw computers.

[robertisaar]

i had someone try to contract me out to work on some BMW application... can't remember what it was, but it used an Intel processor that i wasn't familiar with(want to say the 8061?), anyways, from what was being implied, big money in that market.

[robertisaar]

oh, and now that i think about it, i should probably mention a few odd things i've come across....

if you watch your target AFR and it hasn't filtered up to your stoich ratio, there are situations where the INT will start moving around before you even get to a target AFR of 14.7... so while the base commanded AFR can be ~12.9:1, because of INT action, you can actually be around 14.7:1 due to INT dropping like a rock when it shouldn't be anything other than 128.

the second one is that the rich/lean DTCs can get set when in "closed loop", but with no INT movement and the O2 voltage being outside of the acceptable range.

anyways, i had both of those issues come up and had to develop patches around them. what a PITA. then i made another patch to only apply highway spark when highway fuel was active.... that one was more of a preference than anything. thanks GM, i love having to fix your mistakes.