Older PROM Chip

[Livin' in the 80's]

This is the PROM chip currently in my Z. Does anyone know anything about this? Is it any good? Should I scrap it and go for the ZR-1 specialist?

http://i653.photobucket.com/albums/uu256/craigwhite84/Snapbucket/1990%20Corvette%20ZR1%20Black%20on%20Black/chip_zpsisp9fxyg.jpg (http://s653.photobucket.com/user/craigwhite84/media/Snapbucket/1990%20Corvette%20ZR1%20Black%20on%20Black/chip_zpsisp9fxyg.jpg.html)

[XfireZ51]

The question is "how does the car run?". If u r not having issues, then leave it.
OTOH, if there are upgrades u want to make, Marc, myself and others can provide changes to the calibration.

[Livin' in the 80's]

The question is "how does the car run?". If u r not having issues, then leave it.
OTOH, if there are upgrades u want to make, Marc, myself and others can provide changes to the calibration.

I have to get the thermostat in and test out the temps of when the fans kick on. It seem to run and idle ok. Seemed to back fire quite a bit though.

[jss06c6]

Quite a few posts over on Corvette Forum. No one was impressed. Most were added to LT-1's. From what I read, they attempted to add some timing and some fuel. Typical of canned chips....

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[BigJohn]

Pringles?

[XfireZ51]

Quite a few posts over on Corvette Forum. No one was impressed. Most were added to LT-1's. From what I read, they attempted to add some timing and some fuel. Typical of canned chips....

Sent from my QTAIR7 using ZR-1 Net Registry mobile app (http://r.tapatalk.com/byo?rid=90383)

Guys,


These chips were done decades ago. We know a lot more about the controls today. And with the limited number of units, other tuners just moved on to where there were greater numbers.

[Livin' in the 80's]

Guys,


These chips were done decades ago. We know a lot more about the controls today. And with the limited number of units, other tuners just moved on to where there were greater numbers.

Can I send my superchips PROM to you to update? How much would you charge to get the recent updates loaded for stock set up?

[Billy Mild]

Xfire knows what he is doing.

[XfireZ51]

Can I send my superchips PROM to you to update? How much would you charge to get the recent updates loaded for stock set up?

PM me and we can discuss.

[msuhanek]

I had a mid 90s prom chip in my 91 ZR-1 that I posted with a pic about six months ago. The car ran fine, with the exception of a backfire or two downshifting. And I wanted the overriding feature that ran car in full power 100% of the time without turning on the valet key. I chose the ZR-1 specialist chip. So along with several other benefits the chip offers, it eliminated the occasional backfire and no need the use of the valet key! Thanks


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[Livin' in the 80's]

Update.

Marc is the Bomb! Thanks Marc.

I had an issue with the cooling fans staying on all of the time and the full power stopped working after about 4 minutes with Marc's updated PROM in.

Marc said to look at the PROM and make sure that it was completely seated in the port. I took off the cover and looked carefully at the clips on the side of the prom and I had to gently pull up on them so they fully snapped in the up position. After I started to put the ECM back together, I noticed that the green connector going into the ECM was not seated in all of the way. I pushed it back in and I felt it click into place. Now it has full power and the fans kick on at 98 Celsius and shut down at 89 Celsius.

Marc's update to the prom is a noticeable difference. No back fires so far and it pulls like a freight train.