|
Title: Problem after changing ECU a4 b6 1.8t Post by: pitercsg on March 11, 2023, 12:21:13 PM Hey guys, i have a problem with my A4 b6 with 1.8t bex engine. I bought a 2.0 ALT Ecu 8E0909557E, which is also me7.5. I flashed 8E0909518AS eeprom from original ECU with immo off, but i can't flash original software. Ecu's just not recognizing it... I tried flashing a S3 BAM software and mpps started recognizing it. I calibrated maf and other maps, and it is working. The car starts great but after 5s my fans goes crazy and engine starts choking, like it was enriched as f... or the ignition timing was wrong. I checked a vcds logs after this situation and it show one: Exhaust Gas Temperature Sensor: Open or short to plus. On the original 518AS ecu everything is working properly. Does somebody know what is going on? ??? ???
Title: Re: Problem after changing ECU a4 b6 1.8t Post by: _nameless on March 11, 2023, 02:29:52 PM Use the 8e0909518f. That will control the fans and is a b6 file but the right ECU generation to cross flash.
Title: Re: Problem after changing ECU a4 b6 1.8t Post by: fknbrkn on March 11, 2023, 11:36:54 PM So you bought ALT ecu on BEX engine, flashed it with S3 file and asking whats wrong?
S3 bam had 5.12 bootrom and BEX 6.02 iirc theyre not crossflashable. Go find proper ecu Title: Re: Problem after changing ECU a4 b6 1.8t Post by: pitercsg on March 12, 2023, 07:21:29 AM Use the 8e0909518f. That will control the fans and is a b6 file but the right ECU generation to cross flash. Works great. Thanks mate! |