Port OFT Tune to EcuTek
 

Is there a quick and easy way to use an OFT E85 tune with ProECU and write it to my car? I want to diagnose whether whats going on with my idle acceleration and misfire issues is due to a mechanical or tuning issue.

No not quickly unless you have tuner version of ecutek

The issue I’m having is when I get on the throttle aggressively at idle the RPMs drop like 100 and the engine misfires then it revs like normal. Also once I switched my tank to E85 to do data logging for my flex tune it started having misfires at startup whether the engine is cold or warm. I’m trying to diagnose it as a tune or mechanical issue by swapping out the tune but can’t go back to OFT since I’ll lose my EcuTek license. Would zeroing out the AF 3 Correction table on the stock map be enough to flash the stock rom to my car with catless headers to at least do a couple cold starts and low RPM idle revs? The only other issue is that it has a full tank of E85, but that should be fine as long as I stay under 4K right?

Bill at delicious thinks it’s an exhaust or vacuum leak but I’ve checked everything twice, and can’t find anything.

Here’s some logs:
Cold Start
Misfires Durring Idle Revs
Base E85 Logs

https://datazap.me/u/unholypanda/mis...146-118-115-82


I think your front 02 sensor is bad, its cycling from full lean 20 afr to full rich 11 afr. With no throttle input. Commanded afr is steady at 14.7, and fuel quantity delivered from port and direct barely changes

Think I should just try swapping it out? Front one is the AFR sensor right? It's an expensive part to just try swapping. Any recommendations on one to buy?

I was worried about it since I left it sit out of the header for a bit when I was doing my swap. Do you think cleaning it is possible to avoid a full replacement?

I does seem strange to me that the AFR is consistent. It's fluctuating in a consistent manner. https://datazap.me/u/unholypanda/col...zoom=3041-4130
Its spiking lean right when I get on the throttle then going rich right when it misfires and only when it misfires. The 3rd one didnt misfire, but I guess neither did the 5th and it had the same AFR readings and 1,2, and 4.

How would flashing the same tune to the car with EcuTek vs OFT rule anything out? If the flash was corrupted it wouldn't be running at all.

I never mentioned anything about the flash being corrupted? I just want to try the OFT E85 tune without losing my EcuTek license to rule out any mechanical issues so I can focus on getting whatever is causing it in the tune fixed.

That log its acting differently the 02 sensor seems ok , maybe a little slow to react



You manifold pressure\vaccuum at idle is good 0.35 bar, your fuel trims at idle are low so it doesnt indicate exhaust or intake leaks


Check the DI computer under bonnet has all three bolts tight, thats its earth\ground if it not well grounded weird stuff happens





Message me


Give me you ecu calid
Engine mods
Im assuming you NA with stock injectors
And ill send you a super basic tune to test with
Assume your rear 02 flex kit

PMed

Please keep us updated if you find a resolution to this. My edelbrock tune is doing the same thing when the car is cold. Blip the gas at idle and it almost stalls before recovering. My logs look pretty much the same.

Bill thinks it might be a racerom issue. They are also doing updates for all FI tunes because of a bug with some of the LSPI fixes they were doing. If you’re using delicious tuning that is.

Ahhh, I read it as you currently have it flashed with OFT and wanted to try flashing using EcuTek but using the same ROM.


After that explanation it makes a lot more sense.

Got a modified OFT tune from Steve that worked with ProECU and flashed it. So far its working perfect. The cold start sounds better, and the AC idle dip I had is even less noticeable. No misfires at idle or when I rev. Going to leave this tune on for now and drive around some more to see if any of it comes back.