c7 lt1 boosted p16f3 code fun

Got a C7 lt1 with lt4 fuel system and blower, port injection, cam, and heads. Car has been tuned on Lt4 stuff on e50 for the last 1.5 years no issues. This round we did ported blower and snout, port injection, heads, cam and e85. Everything was going ok on the dyno. Then unstrapped it to do some road tests, and come back in and go to restart the car and goes Rep mode with p16f3 code. I couldnt read it with Hptuners, so I read it with the Autel. But it would reoccur after clearing codes, key on engine off. So I used Hptuners to write the ecm and tcm to clear the code. Then after the second roadtest, came back to the shop, shut the car off, went to restart it, p16f3 again, and this time it will not clear after writing the ecm/tcm. Car is immobile, as soon as the starter turns over the check engine light emits and Rep mode. Has anyone experienced this and have any reason for p16f3 and remedy?

I have had one do the same thing when I had my base airflow table had larger numbers than I would normally use (not even close to the 64 max number the table is limited to). Took me a while to figure it out. Post the file.

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Originally Posted by GSXRWS6

I have had one do the same thing when I had my base airflow table had larger numbers than I would normally use (not even close to the 64 max number the table is limited to). Took me a while to figure it out. Post the file.

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I've cars with higher base airflow than this particular one, but again if was on e50 mix.

Possible corrupt Data flashed to the ECU. If you're sure you haven't exceeded the value boundaries of some table, as mentioned above. Do a write entire and ensure you have a good USB cable.

Jason, we did edit this with an earlier version of the software to shunt the cat and o2 test during startup, then flashed it back in with Beta. During cold starts with cam, it would run real poor. Popping and hunting, after about 10 seconds it would switch over and run/idle great. Even if I tried to add fuel in the OL tables, manipulate the Vt table to get Ignition timing up during the initial 10 cold startup, no dice. Starts and idles fine when warmed up. After shunting the cat and o2 tests, car cold started perfect. But I'm not sure if something went weird when edited with the early software.

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Originally Posted by Flipper7

Jason, we did edit this with an earlier version of the software to shunt the cat and o2 test during startup, then flashed it back in with Beta. During cold starts with cam, it would run real poor. Popping and hunting, after about 10 seconds it would switch over and run/idle great. Even if I tried to add fuel in the OL tables, manipulate the Vt table to get Ignition timing up during the initial 10 cold startup, no dice. Starts and idles fine when warmed up. After shunting the cat and o2 tests, car cold started perfect. But I'm not sure if something went weird when edited with the early software.

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The earlier version shouldn't have caused any issues. I've done the same thing. Although I only saved the file on the older version but flashed with the latest version.

Ok, I will write entire and see if that helps. All other tables are in the realm of where I set them up for boosted lt1's unless I fat fingered something and didn't notice it.