CLASS RACER FORUM - View Single Post

Ed Wright · 02-12-2014, 01:03 PM

He evidently has a '93 if it came with a 4L60 (not an E ), which has no shift issues with what guys call the "stall wall". That is only an issue with the '94/'95 LT1 PCMs. Had zero to do with the tail housing. It's a slip test issue in the '94/'95 PCM. I have a software hack for that. The OBD2 boxes happen to not have that. It has nothing to do with OBD1 or 2.
The '93 required a device programmer (aka "chip burner") and eraser if normal EPROMs are used. Also a couple of EPROMs and a piggy- back board, or spare factory MEMCALs with EPROMs which GM stopped selling in 2007. Some of the later MEMCALs came with OTP (One Time Programmable) proms. Saved GM about $.75 per unit.
Not sure where the 4200 stall limit story came from? Guys are running higher than that.

02-12-2014, 01:03 PM	#37
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Project Pure Stock Debut He evidently has a '93 if it came with a 4L60 (not an E ), which has no shift issues with what guys call the "stall wall". That is only an issue with the '94/'95 LT1 PCMs. Had zero to do with the tail housing. It's a slip test issue in the '94/'95 PCM. I have a software hack for that. The OBD2 boxes happen to not have that. It has nothing to do with OBD1 or 2. The '93 required a device programmer (aka "chip burner") and eraser if normal EPROMs are used. Also a couple of EPROMs and a piggy- back board, or spare factory MEMCALs with EPROMs which GM stopped selling in 2007. Some of the later MEMCALs came with OTP (One Time Programmable) proms. Saved GM about $.75 per unit. Not sure where the 4200 stall limit story came from? Guys are running higher than that. __________________ Ed Wright 4156 SS/JA