After a 50 mile run down the 405 to El Toro and back, I rolled into the check station. I left it idling to keep it warm, but before the tech arrived (20 minutes or so) she started smoking just a...

I was using $42-1227747-V3T.ADX, I will try a later version and see how that works. I installed the new injectors but truck still runs lean. From a stop it just won't take any pedal. It backfires...

regarding the knock counter ... I'll not bother with it as it has no particular value toward making the truck run better. As to the other issue "very high battery voltage" I think I agree that it is...

Thanks, that sounds like good advice. I'll do that and report back.

I have another question... can anyone offer a reason why my battery voltage shows 16.9 to 17.1 volts on the TunerproRT dashboard while datalogging. It shows normal (13.5V or so) on the actual (real)...

I wish to zero out the knock counter each time I start a new data log run. Could someone tell me where to find info on how to do that, please?
87 chevy truck ecm 1227747
Thanks,
Dave

Hey Guys, ddiamondav here. at last post I discovered my ecm was 1228747 bcc AKWA. So I ordered another ecm that was advertised as for 5.0L, which is what I need. Guess what I got instead? It is...

Correct, they are smaller. and I checked the numbers when I cleaned them. they are the 305 size. The truck had no ECM at all when I got it, so I started from scratch, more or less.

[QUOTE=c5wagner;75171]Wrong chipset indeed! AKWA is for a 5.7l with th400 transmission. I found an AKTN chip I have for a 1227747 ecm, don't know how good it is since I found it with the uv cover...

Update to last post: I just looked up the AKWA chip info and found the ECM is not 1227747 but most likely 8747.
That explains why the ADTT chips I bought on ebay did not work. I thought the guy I...

Yes, I'm using 1227747 ecm with AKWA chipset. The truck had not run since 2011, had no computer at all when I got it and was missing a few other fuel / emissions parts. The most confusing issue was...

Hi, New Member here. Located in Orange County, So Cal. Have 87 chevy pickup I'm trying to get ready for smog inspection. My ECM has wrong chipset and I think that's the reason it runs rich. I need...