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View Full Version : Can you ruin an ecm with an autoprom1??


BigBanks78
11-13-2015, 08:08 PM
Ok I have ruined 2 7427 ecm's trying to emulate and datalog at idle. I have another car with a 90 quad4 707 ecm that has lost all power after wot tuning and can't figure out why.
My question is can I damage an ecm with the autoprom1 and tunerpro? I fat finger the switches some times, moving both or wrong one for what I'm doing. Am I spiking ecm's with baud switch or something?
1BadAction
11-14-2015, 05:34 AM
Yes, if you're not hooking up something correctly. I cooked a 7060 for no apparent reason myself but it was 25 years old at the time... so...

Now that I'm used to it, I do a ton of datalogging and emulation and haven't had an issue.
BigBanks78
11-14-2015, 08:57 PM
Ok i figured so but was hoping not. When you datalog and emulate do you do it at same time? I read instructions for apu1 and it said to put the baud switch in 160 to do both but my 707 doesn't like the 160 setting, when u switch from 8??? Baud it drops idle speed for a couple seconds so I thought that may be bad and what spiked ecm's . Will the 160 baud hurt a later style ecm?
1BadAction
11-14-2015, 10:36 PM
I do emulation and datalogging at the same time with my 7427, both switches pointed inward and I never need to change them from that setting.
BigBanks78
11-16-2015, 04:12 AM
Ok switching stuff while car is running is bad :-) cool thank you. I'm going to switch out my 707 ecm to 1 I haven't used yet and see if that fixes the power problem and the quad driver code and NOT change emulator setting!! Good thing salvage yards around here sell ecm's for $15-$30 :-)
Thanks for the help!
lionelhutz
11-16-2015, 08:36 AM
I don't have one, but I can't see how the baud rate or 10K switches have anything to do with the chip emulating function or would damage the ECU. The datalogging part is just receiving the transmitted data.
BigBanks78
11-17-2015, 08:55 PM
I wasn't sure if putting 10k ohms across A and B in aldl on a 1990 ecm would damage it.
BigBanks78
11-23-2015, 08:26 PM
Mine (707 8b) flashes the cel when I put in 160 baud. I did notice the red record log button was on in emulation mode. Is that how u log when emulating?? I tried data connect button it did nothing that's why I been using switch. Emulate then switch to log then switch back to emulate.