The Prom

[Corbusa]

Does any one make a Prom/ after market ? I should just explain what I'm wanting to do.. I'd like an extra prom for a spare .. Keep my factory one left alone and buy a spare to have calibrated for my upgrades. best way or what to buy?

[FU]

there are several people that are excellent at chipping..Marc Haibeck will do you right.

[WVZR-1]

You need go no further than Marc. Make note of anything you've modified or intend to do soon and he'll accommodate you no doubt. Do you know if you've got the "most current" updated GM PROM? Through the window on the blue cover there will be a code printed on a silver label. The most current is AYBK and part # 16163905. I might have an NOS of that. I assumed the car we're talking about is a '90MY.

[Corbusa]

I'll call Marc... also I see that 1990-1995 ecm's are the same ( this is what I read ) .That does mean 1990-1995 ZR1's not just corvettes Correct? a spare ecm would be nice also...

[XfireZ51]

Does any one make a Prom/ after market ? I should just explain what I'm wanting to do.. I'd like an extra prom for a spare .. Keep my factory one left alone and buy a spare to have calibrated for my upgrades. best way or what to buy?

Really no reason to do that. You can always re-burn the chip w the original calibration as long as you have saved it on file somewhere. Once you do the mods, the stock chip won't be optimum anyway.

[Corbusa]

True XFire.... Can teh proms go bad? should I have2 and keep one in the glove box? :)

[XfireZ51]

True XFire.... Can teh proms go bad? should I have2 and keep one in the glove box? :)

Anything can go bad but highly unlikely. At worse, you can use a daughterboard like Moates to sub for the OEM chip with a re-burn of the calibration. As for the calibration itself, that's already available from many of us anyway. A spare ECM is always a nice thing to have.

[RHanselman]

Corbusa,

You could just pull out the entire ECM and install the new Plug and Play unit that will be available very soon. The new units are USB programmable and will host the newest technologies. No chip required...

You could put your's stock unit on the shelf until you want it again.

Cheers,
RH

[Corbusa]

Keep me informed!!!!

[Dynomite]

You need go no further than Marc. Make note of anything you've modified or intend to do soon and he'll accommodate you no doubt.

Concur :thumbsup:

I actually have two chips for each Corvette (87 Octane and 91 Octane) all modified by Marc Haibeck (http://www.zr1specialist.com/HAT%20Web/products/custom%20calibration.htm)

[Hog]

Concur :thumbsup:

I actually have two chips for each Corvette (87 Octane and 91 Octane) all modified by Marc Haibeck (http://www.zr1specialist.com/HAT%20Web/products/custom%20calibration.htm)
Do you manually swap chips, or do you use a "chip switcher" and switch between calibrations based on requirements?

peace
Hog

[Dynomite]

Do you manually swap chips, or do you use a "chip switcher" and switch between calibrations based on requirements?

peace
Hog

I flip the ECM over and remove/replace chip as I most often use the 87 Octane chip in both the LT5s and L98 :cheers:

I do not switch chips that often and always disconnect negative battery cable first ;)

[Hog]

I flip the ECM over and remove/replace chip as I most often use the 87 Octane chip in both the LT5s and L98 :cheers:

I do not switch chips that often and always disconnect negative battery cable first ;)
Cool thanks, would something like this work in an LT5 ECM? $55 and allows you to switch programs at the hit of a button.

http://www.moates.net/g3-bank-switching-adapter-p-33.html?cPath=64


peace
Hog

[alwayscode390]

That Moates bank switch looks interesting!!! ^^^ ---


Corbusa,

You could just pull out the entire ECM and install the new Plug and Play unit that will be available very soon. The new units are USB programmable and will host the newest technologies. No chip required...

You could put your's stock unit on the shelf until you want it again.

Cheers,
RH


Like a "stand-alone"? Whats the pricing going to be on something like this?

[XfireZ51]

You can use this remote w the bin switcher

http://www.moates.net/ex-remote-switch-wled-p-47.html?cPath=64

You'll need to use a chip large enough to hold the number of different calibrations, so a 256K chip will hold 8 different calibrations. The remote will then allow you to select among them on the fly. Not sure that for a DD its all that necessary. I do use an Ostrich for mine when I am tweaking mode but then burn a final bin into the stock memcal for reliability.








That Moates bank switch looks interesting!!! ^^^ ---





Like a "stand-alone"? Whats the pricing going to be on something like this?

[Corbusa]

Hog and Xfire I sure do need educating in the electronics area/ecm's etc That interesting stuff.
alwayscode 390 where do you guys learn this? I'm anold school mechanic and I need me upgraded :)

[RHanselman]

Whats the pricing going to be on something like this?

Around $2700 + or -

Ill be able to post up the price in the next week.

[LancePearson]

If you go to Marc Haibeck's site you can see the various chips he offers already made and what each does and why. Read the installation instructions for the full reasoning. In addition, he can custom make one tailored to your build. Over the years two guys made the most chips for owners, DRM and Marc and Marc seems to be rising nowadays. I happen to have a DRM in mine and I like it but it was there when I got it. The most frequent thing the chip guys do is to advance the timing from stock, lean the mix at full throttle, change the set points on the fan(s) to come on sooner and either both at the same time or quickly one after another to keep the engine cooler, lock out the CAGs function (1-4 shift light deal) and/or turn the valet switch default to On instead of Off. Beyond that he can do anything you want. He is very experienced with these motors to help guide you as well. His choices are pretty rational on how much he does things and what you have to do as a result, like run 91 octane, etc. If I didn't already have a DRM in mine I'd be buying his stock chip for the 1991 model year which is different from other years. Check his site.

He does a good job of giving you starting info and if you talk to him about custom I'd guess he can tailor to your needs quite well.

Lance P.

[XfireZ51]

Hog and Xfire I sure do need educating in the electronics area/ecm's etc That interesting stuff.
alwayscode 390 where do you guys learn this? I'm anold school mechanic and I need me upgraded :)

Learned by mistake! ;)
I started modding my 84 Xfire and found out I needed to re-calibrate in order to make things work. Re-wired the car for a different ECM, bought equipment and software then read what I could on Web. Burned a lot of gas too. Been tuning for myself about 13 years now.

[alwayscode390]

Hog and Xfire I sure do need educating in the electronics area/ecm's etc That interesting stuff.
alwayscode 390 where do you guys learn this? I'm anold school mechanic and I need me upgraded :)


I am still learning. I actually got introduced to the whole OBD1 custom tuning thing from my GMC Syclone and TTA (Turbo Trans Am with a Turbo Buick Engine). They say tuning a turbo vehicle is serious business, and not many people burn custom chips that you can trust now-aday. Those applications also introduced me to the stand alone engine management systems. Honestly I am still trying to get comfortable reading my datalogs first HAHAH :) ---