I have read the last couple of months postings and I am confused a little on what is the best setup to go with to Program PROMs.

PLAN--
I have the Diacom scan package.
Get Pocket Programmer.
Get the TunerCat editor.
Car is 88 GTA, so I expect I need the $32B definition.

Does this sound like the proper setup so far?

What PROM's do I get and where?
27C128 or the AT28C256 or what?

From the posting it sounded like poeple where having problems with the flash proms, but the flash sounds like the best way to go when it works right.

I have a Hypertech cip now, so I thought I could still use it by just pulling the PROM off and replacing it with my PROM. Please let me now if I am wrong!

I would like to do it right the first time.
Any advice would be a great help.




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I have tried to use the flash proms, but haven't gotten them to work. Also tried useing the 27c256 chips. I believe you have 27c128 chip as I do. To me they're easist to use. When you make a change you can just reburn without adding 0s to the first half of the chip. I just purchased 10 27128 chips on ebay for 3.80, and an eraser for 25.00.
Also have a hypertech chip, I was going to try and modify it for my size injector size. When copied on another chip, my car won't run, limp home only. I don't know if you can use the hypertech memcal safely.

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87 GTA 355/700r4
ported&polished 083 heads
xe268h comp cam
1 5/8 blackjack alumicote
homebuilt y pipe,pasesetter 3in mandrel cat back.
ported/manifold,upper plentum, tpis maf.
airfoil, 24# svo injectors, home programed chip, underdrive pulleys, erson roller rockers, chromemolley pushrods,2100 stall, shiftkit, 373 10 bolt.

[This message has been edited by cp87GTA (edited September 16, 2001).]