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Update: MAF connector gets 12v with key on. Connector also has a good ground. Connector is showing 5v reference. There is continuity between...

I can get it to fire up with the MAF unplugged. So I dont think CMP/CPK sensors are bad or mispinned. I'll check voltage later tonight when it cools...

:welcome: The 1993 - 1995 Second Generation TBI computer has more tuning parameters than the 1987 - 1992 First Generation TBI computer. The...

My schematics are for a 2002 Express Van 5.7 Liter. I've used the schematics to build new Stand-Alone harness for both the Vortec 5.7 and Vortec 7.4...

Update: Unplugging the MAF works. MAF reference pin is in the correct spot. However i get no response from the sensor with key on engine off. Bad...

Hi Dave, Thanks for those schematics. I went over them and have noticed a few discrepancies between what they say and what my pinout sheet says....

:welcome: Many members use EEHack for the 1995 LT1: http://fbodytech.com/eehack-2/ The administrator for EEHack is also a gearhead-efi member....

At the moment, I can't remember a specific post on the '0411 upgrade. Maybe the '0411 is faulty? Attached is the '0411 schematics I've used...

I recently did 3.73 in my wagon and LOVE them. A recommendation from 95wagon on impalassforum. Didn't keep ABS as it really never worked. I think...

that's why i only make really conservative changes to eehack's official version. i want it to be something that doesn't break your car, stop other...

the target AFR is a patch, yeah. kur4o found out where in memory it was being stored and i modified the factory datastream over something useless...

I think it's great you're working on updates. I suggest keeping the versions separate. or possibly an advanced option to enable/disable them and...

Actually, i spoke too soon... You kind of pointed out one of the things that has me confused....my ecm says SERV.NO. 161963965 BJLH. I popped the...

Yeah. That's where I got most of the files. Some from tunerpro website. I have the 4l60e...don't I? It's a heavy half 6 lug 1500hd with the 14 bolt...

According to this link: http://www.gearhead-efi.com/Fuel-Injection/showthread.php?303-16197427-PCM-Information-0D BJLH is for a 4L60E transmission....

I think its here..Truck has edlebrock intake, stock tbi, shorty headers. The base timing is 0.. knock sensor is unplugged in log titled 3rd because...

Ok, I'll get a log up shortly

I've been tweaking my 94 for 10 years and am actually rewiring my new 92 to be a "94" now, too. Post up a log and let us know what's "not right."

No worries. As in adding a multiplier to the field i.e. 0.068027211? Doesn't seem to have any effect when I look at a datalog. That, or...

I'm curious, when or possibly have the injectors ever been serviced? dave w

Nice! I'd definitely like to try out an update. I have not had any issues with the version I am using currently though. As long as I can get...

Not mechanically, of course not. Nonetheless you may need to make adjustments to the Main Spark Advance & Extended Spark Advance Tables under Spark...

More Google information: ( https://www.discountconverter.com/tech-tips/news_page.cfm?Key=catalytic_converter-&News=216 ) NOx can be formed by many...

Cooling system is in excellent condition. Radiator is fairly new ac delco. Distributor is not adjustable. Thanks ��

Check your base timing and coolant temp.

On his 1st test, he was failed by HC & NO. Then he replaced his catalytic converter. On his 2nd test, he was failed by NO. He was never...

Some Google Information: What causes CO to be high in emissions? A rich air/fuel mixture can be caused by a number of issues such as leaky...