I need to get a Camero ECU reprogrammed to run the EFI on my blown Caddy flathead. Someone on the board here sent me a phone number of a gent from Denver that could do this. Like the brainiac I am, I deleted all my inbox Pm's, and lost the number. Anyone know of someone offering this service? Thanks in advance!
Is this what you are looking for: Momar Injection 8500 E Warren Ave Denver, CO 80231 303/752-1227 www.momarefi.com EFI complete systems, components, billet throttle-bodies
No, it's not That number is no good, and follow the link, and you'll see what I mean. But thanks for trying!
I think Momar may be in Grand Lake, CO now. I found this listing: Momar Injection 184 County 448 Rd Grand Lake , CO 80447 970-627-3651 Good luck, PHIL
I do some of the Gm PCM's, which are you using, and what mods do you want done. I am east of colorado springs. I can be PM'd at wadea@elpasotel.net
I have to have two of 'em reprogrammed. Found a guy buy googling "VATS reprogramming". I've emailed him just this am. Supposedly does ALL GM ECU's, can reprogram for different gear ratios (what I need done), eliminate VATS, EGR, and other stuff for you. I've decided to put a 6.0 LS2 in the Diamond T, and am going to weed out the factory harness, keeping the fuel pump, trans program, O2 sensors, and so on. Try that. Brian
Brian, I will! I'll be using a Camero ECU, with the MAp sensor, IAC, O2, and TPS, to run the port EFI.
His website is "LT1Wiring". I also sent a pm to "cyclone17", as I'd much rather have a fellow "HAMB'r" do this for me. In a strictly "traditional" way, of course... Brian
I belong to a late model GM truck site, too, for ideas of fixes for my late model. Everyone over there swears by some company in Tennessee (I think) called Blackbear Performance. If you have enough people you can get the owner/tech to come out in person to do the tune.
Thanks Brian, but it seems there is a flaw in my plan, that I've got to try and find an answer too. There is a problem with what you are trying to do that I know of. The 1227730 ecm that was used in 90 to 92 tuned port cars will support port injection, but not a pressurized intake. There are no fuel maps above 100 kPa. The 1227749 has the same pinout as the previous ecm, and has the capability to support the intake pressure, but to my knowledge was not used on a V8, only V6 and I4's. So, back to the drawing board!
Hmmm. What about using an ECU from a later, supercharger capable system? At least half a dozen manuacturers have bolt in belt driven superchargers for LT and LS family engines, surely the ECU from one of those would work for you? Thery're a dime a dozen. I just spoke with a builder buddy here regarding modifying my 6.0 harness. He's done several, using the stock engine harness', and is going to provide me with the schematic and step by step help with eliminating the unneccessary bits. Another local shop, "Shoemakers Garage" here in Kalamazoo has all the software to reprogram the ECU to eliminate the VATS, vapor purge, etc, so I'm all set. I will need the VIN # and specs for the engine/harness, but since it's all currerntly setting intact and running in an '06 2500HD Silverado now, awaiting dismantling, that's no worries. Let me know what you're going to do, perhaps we can help you out... Brian
Brian, I hear that the steering column/ ignition key setup in some GM products need to be the same as the computer driving the engine etc. It has to do with the alarm/security etc. I talked to a guy who had to mix and match a steering column in an s-10 powered street rod. He told me of the problem and the multiple reflashes of the computer. Nick
Nick, That's the VATS (vehicle anit-theft system) part of the ECU we're eliminating. Once that is gone, the ECU doesn't care if you start with a screwdriver on the selenoid or a key with a chip that talks to the switch, that talks to the ECU! Brian
Thanks Brian! Seems the trick is to find an ECM that was from a port injected car, and supercharged. I'd like to run a GM style, so I'm not constantly tempted to tweak the programming. I looked and had planned to run the Megasquirt, until i talked to guys that had it, and were still trying to get it right after a year of trying! There has to be a GM compatible ECM, I just need to do more homework, I think. (and hope!)
Exactly. I have no desire nor need to try to "tweak" the fuel/spark mapping, nor the technical skills to do so. fMy assumption is that GM fuel injection engineers are a little smarter than me. I just need to know which wire is 12v hot, which is 12v switched, what to ground, and where to send my ECU for reprogram. Everybody and their brother is putting superchargers on LS powered pickups, Camaros and F'birds, seems if you had one of those ECU's, harness, injectors and related sensors to use, all you need is somebody to steer you thru the schematic.
These guys may be able to steer you in the right direction. They are located in Marine City, MI. I have used a few of their products and services and have been pleased with the results. If they can't support you, they may have advice on who can. Regards, Rhys. http://howellefi.com/customer/help.php?section=contactus&mode=update
Thanks Rhys! I knew if this stayed near the top long enough, I'd get the answer! Viva La HAMB! I spoke with Howell EFI, and got the answer! They said I could run the ECM I had planned on, with the single stage MAP sensor. It is correct that it will only read positive manifold pressure to 100 kPa.The ECM would then switch from that to a pre-defined table. Troy said he had just did the same thing on a 350 ramjet, and it worked great. $250 for the chip. If I wanted to take the car there after it was running, they could put it on a dyno, and fine tune it for about $500. So, less than an aftermarket ECM, and the end result I was looking for.
FYI, I had Howell re-programmed my camaro 93 system (engine transplant). It ran terrible. I used Street & Preformance and their's worked fine.
An outfit in Australia called Kalmaker can reprogram GM ECUs. I don't have their address but I'm sure Google will find them.
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