Guys,
Me being the most anti-soldering skilled equiped person have royally messed up my memcal for the 87IROC. Is there any place that i could get a new one with the exact same chips on it. I think i've learned my lesson and have the technique down pat. now at the cost of one good memcal...

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1987 IROC-Z L98 350 SuperRam, Edelbrock Performer 6085 Aluminum Heads, LPE RollerCam 219/219, Crane Gold Race 1.6RR, TF 1 pc Moly Pushrods, Underdrive Pulleys, Edelbrock TPI High Flow Base Manifold, Accel 58mm TB, ADS 24#, Crane AFPR, K&N, Edelbrock TES Headers, Catco Hi Flow Cat, 3" Borla Cat-Back, Accel Cap & Rotor, MSD 8.5mm, MSD 6AL Ignition, MSD Blaster 2 Ignition Coil, Hayes Clutch, 1LE Aluminum DS, 94' Z28 Disk Rear, Wilwood Adjustable Proportioning Valve, Torsen Series 3 Posi Carrier, Precision 3.73 Gears, Southside Machine Sub-Frame Connectors, Hotchkis Lower Control Arms, KYB Shocks/Struts, Suspension Techniques Lowering Springs, Polyurethan Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm,

To see the ROC, Check out the webpage Here

 

It'll probably take day or two, but you can get it from the dealer for 35 bucks.
Or you can opt to try and find the right one in a junkyard.

 

If it is only the eprom side that is fried, you could also use an aftermarket "piggy back" eprom and read/burn on to the "piggy back". Some also come with a ZIF socket to make life really easy. Probably the only good use for them (aftermarket eproms) in my opinion.

 

Glenn,
Which aftermarket brand are you referring too? Hypertech? or are their more than just that?

Brendan

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1987 IROC-Z L98 350 SuperRam, Edelbrock Performer 6085 Aluminum Heads, LPE RollerCam 219/219, Crane Gold Race 1.6RR, TF 1 pc Moly Pushrods, Underdrive Pulleys, Edelbrock TPI High Flow Base Manifold, Accel 58mm TB, ADS 24#, Crane AFPR, K&N, Edelbrock TES Headers, Catco Hi Flow Cat, 3" Borla Cat-Back, Accel Cap & Rotor, MSD 8.5mm, MSD 6AL Ignition, MSD Blaster 2 Ignition Coil, Hayes Clutch, 1LE Aluminum DS, 94' Z28 Disk Rear, Wilwood Adjustable Proportioning Valve, Torsen Series 3 Posi Carrier, Precision 3.73 Gears, Southside Machine Sub-Frame Connectors, Hotchkis Lower Control Arms, KYB Shocks/Struts, Suspension Techniques Lowering Springs, Polyurethan Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm,

To see the ROC, Check out the webpage Here

 

ADS, Hypertech, Jet, SLP to name a few.

For many of the later years, the chip manufacturers created a "piggy back" chip where you plug your GM memcal into it and then plug the entire assembly into the carrier on the ecm.

These "piggy back" chips allowed the circuitry for the ESC on the memcal to "flow through" the aftermaket eprom/carrier and thus make it cheaper to make. The pins for the eprom go to the "piggy back" chip's own eprom and this is the only part of the GM memcal that is "intercepted".

Some of these "piggy back" chips used a ZIF socket and you can swap a 28 pin eprom directly onto it. However, it can vary from manufacturer to manufacturer and from year to year. E.G. Some ADS Superchips have a ZIF socket and eprom, where as mine does not. The eprom is actually soldered in and I will have to remove the eprom and replace is with a ZIF socket.

Currently, I am just eraseing/programming directly onto a second GM memcal, until I have erased it "one time too many". At that point, I will then use my ADS Superchip to erase/program onto it and just plug my GM memcal into it...until I erase/program the ADS chip "one time too many". At that point, I will unsolder the eprom from the ADS chip, install a ZIF socket and then just erase/program 27C256 eproms directly and swap them onto the ZIF socket I put on the ADS chip.

This just allows me to use GM's, and then ADS' eproms first, before I finally "butcher" my ADS chip. The reason I plan to do this with the ADS chip is that its plastic cover appears a bit taller to handle the ZIF socket and eprom. Its about the best use I can think of for my ADS chip...the programming on it absolutely sucked and definitely not worth the money I paid for it. But, I've had it for almost 8 years and at that time there was nothing like www.thirdgen.org and the PROM board.

It really is amazing the things (and beliefs) that were available in the early 90s and whats available today. A lot more information (and good information) is available today. The general belief when I first bought my car was "you cannot modify the engine...and the only modification that you can make is change the eprom"...to give you an idea of the limited knowledge available just 10 years ago. We definitely have come a long way.

 

leirch, I sent you an email, please check.



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'87 L98 TPI IROCZ, AFR190 heads, 3.70 gears, ZZ9 cam, 2400 Art Carr TC, SLP 1 3/4" headers, SLP cat-back, no cat, no AC, no MAF screens, Accel manifold base & SuperRam, Edelbrock double roller timing chain, MSD ext coil & distributor, trans cooler, 52mm TB with airfoil, TB coolant bypass, AFPR(58psi), K&N filters, Hotchkis lowering springs, Car-Pro custom chip, Lay Ind. ram air kit, 265/45R16 Kumho V700 tires.
ET 13.39sec @ 107.21mph
'90 Eagle Talon AWD, no rust thru 9 winters
'99 Camaro SS, red, 6-spd, T-tops, Mcleod clutch, Pro 5.0 shifter, MAF processor, Direct Flow airlid, K&N filter.
313.7Hp & 320.6ft-lbf, ET 13.55sec @ 105.1mph
next mod: 4.10 rear gears

 

Hard to image that now using a ZIF socket couldn't save it.
If you have a DigiKey catalog, or maybe someone has the part no for one.

Kinda akward but for the 10-12 bucks makes for an infinite use memcal
I have a coule that have had hundreds of proms in them.

 

What I did with my stock GM memcal was remove the soldere-in Eprom with a small tip iron and some solder wick. I then put a 28pin "socket" in its place. I trimmed the sides of the memcal to give me more room for the solder iron tip. I liked the socket here since it was low-profile, and I could reuse the blue plastic cover, even with a prom plugged in.

As for my aftermarket ADS memcal, I was lucky enough to have one that allready had the socket on the board, with the chip just plugged in. I desoldered that socket out, and soldered in a ZIF socket for easy chip change. I will use that for reprogramming, then when I am happy I plug the desired chip back into my original GM memcal and leave it alone.
I just thought I would pass this on.

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Best ET 14.413 @95.57 without
pulling valve covers or manifolds.
Also with stock 2.77 rear end!!!

 

Please tell me where to get a SD memcal for $35. The dealer wants $65-70 depending on which one I go to(on-line).



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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project

 

Grumpy,
Its not that the ZIF socket won't work or anything. Its just that i messed up when getting everything soldered and set correctly so i had to tear it back apart to resolder everything so i thought ok fine i'll do that and everything will be ok. Well some of the memcal came apart and i'm not too sure if i melted anything on the internals of the memcal itself.. Now that i have a little more experience with that small tip on the soldering iron and what it can do and what it can't I should be just fine now.

John,
The 35dollars that was mentioned above is "below" list price and definatly below "public walkin" price. REALLY helps to know people at your local GM dealer, like my father does. We can go there and we get his companies discount at the local stores. Its nice.


Brendan

 

OK, that's great that YOU can get one for a great price but your post said that we could go to the dealer and pick one up for $35 which is not true. Please post facts here, you can get peoples hopes up and they have to learn the hard way($$$).
I can get a whole car for free any model I want if I steal it, that doesn't mean other people can too.


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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project

 

John,
I NEVER said you could get them for 35dollars.

Brendan

 

Give Dal a call. Just tell him that you are part of the F-Body group. I get mine through him and its about $45 with shipping.

Ask for 'Dal in the parts department'
Vandevere Olds
Phone: 800-362-9494
Contact Name: Dal Slabaugh

Tim


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• Program your own PROMs!. Read my article to get started!
• Research and Experiment before asking questions.
• This is not a chip store. Go to the classifieds if you want someone to sell you a chip or give you a BIN.

TRAXION's 1990 IROC-Z
Best Time = 12.244 @ 112.51mph (1.778 60' / 7.819@88.32mph in the 1/8)
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels.
Gunning for NA 11's with bigger cam, bigger stall, and bigger exhaust.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

I'm sorry, it was maddmax that could get them cheap. It's just that I was looking for one and could not find them for less then $65. Again, sorry for the mis-identifed quote.
John



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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project