Having issues with ECU - NoPistons -Mazda Rx7 & Rx8 Rotary Forum
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Old 05-29-2018, 05:26 AM   #1  
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Default Having issues with ECU


I'm new to the world of hondata. I'll jump right into the issue:
Car starts and idles as normal. Up until this point had 0 issues. The afr was a little lean for idle, so while it was running I added a tiny bit of fuel on the low cam table, pressed upload, car immediately died. After it died, I started it again, tried to apply throttle and the car instantly dies. If it give it less than 5% throttle it'll rev up fine. The aem wideband reads normally, but when I am datalogging the AF doesn't change at all. It's stuck at 17.41:1. I tried erasing the ECU and uploading the original calibration with no luck. Car dies when throttle is applied. Still idles fine, a little leaner than normal. I suspect the ECU is getting the wrong AF reading and as such is not running right. I am worried I may have fried the ECU??? Sure hope not, I read on here that it's not harmful to upload while running.Car is a 96 GSR built and turbo'd, running Hondata s300 V1. Everything else seems to be functioning normal except the hondata AF reading.

Any help will be apprecited.

I didn't find the right solution from the Internet.

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Thank you.
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