NefMoto

Technical => Tuning => Topic started by: trndiik on July 30, 2023, 08:42:49 PM



Title: Me7.5 A3 1.8T ARZ Cranks over, doesnt start after flashing
Post by: trndiik on July 30, 2023, 08:42:49 PM
Sup fellas, me and a friend put a “hard cut” limiter on his narrowband me7.5 and it worked like a charm for around 30 min and then he shut it off. Once we decided to go get some food it just cranked and wouldn’t start. Mpps kept saying “ecu not found”(it did this before but then it worked after cycling the ignition and restarting the program a couple of times). Could this be a bricked ecu? We hope it’s just the fuel pump relay since it doesn’t prime the pump when the key is turned but that also could be that the relay isn’t receiving any signal from the ecu. Any advice is golden :) thanks

(Thought it wouldn’t do anything to the ecu since it’s not like LC on a 512kb file where you have to basically add code, I just did ignition cut at 6500-6550rpm)


Title: Re: Me7.5 A3 1.8T ARZ Cranks over, doesnt start after flashing
Post by: fknbrkn on July 30, 2023, 09:19:05 PM
You forget to fix checksums

Disconnect the battery, turn ignition on, connect battery after few minutes and shortly try to write a stock
Try this for a few times and if no luck, only boot mode at bench will recover that


Title: Re: Me7.5 A3 1.8T ARZ Cranks over, doesnt start after flashing
Post by: trndiik on July 31, 2023, 07:02:40 AM
So disconnect negative terminal, turn ignition on, plug mpps in, put the negative terminal back on and try stock map?


Title: Re: Me7.5 A3 1.8T ARZ Cranks over, doesnt start after flashing
Post by: fknbrkn on July 31, 2023, 08:59:43 AM
Idk about mpps in that case but this trick sometimes works with nef
The key is to made is quick as possible after plug battery so leave dongle in obd port


Title: Re: Me7.5 A3 1.8T ARZ Cranks over, doesnt start after flashing
Post by: xTeooo on August 02, 2023, 03:05:52 PM
post ur bin here ill check it