Effect Fuel Pressure Has on Performance

[1-ton]

Did you see this thread? https://www.thirdgen.org/forums/tbi/557168-swap-7747-7060-a.html

Bunch of info about it.

Just did a cursory read over, sounds like the 7060 might be a bit of a redheaded step child? If that is the case, it may be better swapping to something better supported. At least if considering tuning, and if it's an easy swap.

This is what I have, I didn't remember it being that much. http://www.moates.net/apu1-autoprom-package-usb-version-p-54.html?cPath=95 I thought maybe the cable cost would cut that down a bit, but even at $55 it doesn't make a huge dent in that price.

You are correct about the 7060 ECM being a "Red Headed Step Child". I have done a lot of research on the 7060, and because it is such an odd-ball there is not a whole lot of info on it. Both Eagle Mark and Six_Shooter on Gear Head EFI had the most knowledge of this ECM. My 1991 V3500 Crew Cab Silverado came stock with the 5.7 / 4L80E / 205 / Dan-60 / Corp-14 Bolt combo and the 7060 ECM to control it. My 1991 V3500 is considered pretty rare because it is the one and only year GM truck that came with the 4L80E / 205 combo, thus I want to keep everything original, and only heat up the engine performance a little.

My new engine on the day I first fired it up.

 

[dyeager535]

Have you looked into what ECM's are essentially a direct swap?

I hear you on keeping it stock, but if you can get away with just some simple re-pinning of the ECM connectors, might be worth doing, simply for the support. GM was fairly good about keeping things similar enough around that vintage that the one-off stuff wasn't far from the more mainstream components.

You aren't the only one in that boat though. The MAF TPI (moreso than TPI itself) I run is less well-supported than MAP TPI, and the Corvette TPI ECM, while essentially a clone of the later F-body ECM, is waterproof, pinned out differently, and has a bit different coding. So to use the Corvette or MAF TPI ECM's, you end up in that red-headed step child land, where support is unfortunately less robust than for the more common stuff.

Unfortunately, we are also running into the situation where everyone is flocking to the LS-series, and abandoning anything older, draining much of the brainpower that existed for these things.

 

[1-ton]

Have you looked into what ECM's are essentially a direct swap?

I hear you on keeping it stock, but if you can get away with just some simple re-pinning of the ECM connectors, might be worth doing, simply for the support. GM was fairly good about keeping things similar enough around that vintage that the one-off stuff wasn't far from the more mainstream components.

You aren't the only one in that boat though. The MAF TPI (moreso than TPI itself) I run is less well-supported than MAP TPI, and the Corvette TPI ECM, while essentially a clone of the later F-body ECM, is waterproof, pinned out differently, and has a bit different coding. So to use the Corvette or MAF TPI ECM's, you end up in that red-headed step child land, where support is unfortunately less robust than for the more common stuff.

Unfortunately, we are also running into the situation where everyone is flocking to the LS-series, and abandoning anything older, draining much of the brainpower that existed for these things.

The 7060 was the only factory ECM that controlled the 4L80E trans with TBI, thus there is no other choice other than a stand alone controller for the 4L80E trans, which does exist at a very expensive price. I did order the Data Link Cable for it, but I have not gotten around to finding out what broad casting code is on my ECM. Since the 7060 ECM was only around for 5-years, I am sure there was only two broad cast versions of the 7060 ECM, thus one of my two .BIN files I have should be correct. As long as there is nothing going on that is detrimental to the life of my new engine when I do some data streaming, I am not going to do any chip burning because I do not want to spend hundreds of dollars on chip burning equipment only to get about 7 or 8 more horse power out of my engine.

 

[dyeager535]

Frustrating that there isn't something "close" with better support, but I think you are probably on the right track. No reason to change things up for extremely minor differences. Only if you are running lean under heavy throttle/load would I be very concerned.