PROM questions - ZR-1 Net Registry Forums

GregCrowe · 10-15-2006

I recently removed a Doug Rippie chip from my 91 ZR-1 for the exact reason you detailed. The Rippie chip was based on the original GM design that makes the engine idle too high when coming to stop. It drives you crazy. GM has a technical bulletin out on this and came out with revised chips in 94. If you do a seach on this site, you'll find the information and GM part numbers. In fact, looking at my receipt, the part number for the 91 updated PROM is 16193416. List price on the PROM is $98.65 and if you know someone at any dealership or repair facility, they can get it for less.

10-15-2006	#2
GregCrowe Join Date: Sep 2004 Location: Oklahoma Posts: 111	Re: PROM questions I recently removed a Doug Rippie chip from my 91 ZR-1 for the exact reason you detailed. The Rippie chip was based on the original GM design that makes the engine idle too high when coming to stop. It drives you crazy. GM has a technical bulletin out on this and came out with revised chips in 94. If you do a seach on this site, you'll find the information and GM part numbers. In fact, looking at my receipt, the part number for the 91 updated PROM is 16193416. List price on the PROM is $98.65 and if you know someone at any dealership or repair facility, they can get it for less.