When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have an eprom/memcal done by Ron Zimmer at Z Industries for a 90 ZR-1. This was for a nearly stock car with light mods such as free-flow exhaust and air intake. It eliminates CAGS and turns fans on at lower temp also if I remember correctly.
My friend who owned the car claimed to really notice a difference and purchased another chip from Ron when he bought his '94.
If you have any questions, call Ron at Z Industries in California with the chip number (see photo) - he probably still has records on it.
$130 delivered
Last edited by Digital Disaster; 03-12-2016 at 06:05 PM.
I have an eprom/memcal done by Ron Zimmer at Z Industries for a 90 - 91 ZR-1. This was for a nearly stock car with light mods such as free-flow exhaust and air intake. It eliminates CAGS and turns fans on at lower temp also if I remember correctly.
My friend who owned the car claimed to really notice a difference and purchased another chip from Ron when he bought his '94.
If you have any questions, call Ron at Z Industries in California with the chip number (see photo) - he probably still has records on it.
$175 delivered
Just to clarify, this prom won't work for a 91. The calibration for each model year uses a different format or is laid out differently. The values may be the same, but where the values are addressed in the calibration is very different.
Also, 90 ZR-1s used an external knock sensor circuit. 91-95 knock sensor
circuit is on board the prom itself.
Just to clarify, this prom won't work for a 91. The calibration for each model year uses a different format or is laid out differently. The values may be the same, but where the values are addressed in the calibration is very different.
Also, 90 ZR-1s used an external knock sensor circuit. 91-95 knock sensor
circuit is on board the prom itself.
Thank you for that info - I changed the text to reflect 1990.
I have one of his chips in my car and it runs great. They did a comparison test against several other tuner chips and the z industries chip was the most aggressive of the bunch. It is not a custom chip but it does work well. The previous owner of my car was a dentist who was in to performance and would occasionally track my car and he tried several chips and kept this one. Good Luck with your chip.
I have one of his chips in my car and it runs great. They did a comparison test against several other tuner chips and the z industries chip was the most aggressive of the bunch. It is not a custom chip but it does work well. The previous owner of my car was a dentist who was in to performance and would occasionally track my car and he tried several chips and kept this one. Good Luck with your chip.
ed ramos #3028
Thank you. I actually worked at Arizona Speed & Marine at the time and got the chip for my friend. I have had several of Ron Zimmer's chips in my own Corvettes as well as sold dozens and never had any less than great success with them all. Ron's the man.
11-30-2015, 08:00 PM
90 ZR-1 Z Industries Hot Chip (E Prom)
