25-12-2012, 11:17 PM
(24-12-2012, 10:06 AM)Toms306 Wrote: I'd be interested to know what actually happens if you write the wrong map to a HDi....does it literally kill the ECU or does it just not run right? I mean how different can they actually be, they're using the same info from the same sensors afaik?
I'm not gonna try it though!
I've put a 362 on a 162 and it ran fine, just had the EML light on. Was a 'good' file but the wrong software by a long way for that ECU hehe.
Not sure if the 162 hardware were a bit more forgiving as they came on earlier cars, or it was an early hardware... hmmm...
Not tried it on any others.
As per the MAF, this is one area where a proper remap/visit is better than just DIY because a tuner will (or should) give the car a good thorough check over before/after the remapping, fix/diagnose problems where applicable, and basically guarantee your car is 100% where possible before you pay up and leave, and advise where necessary if that isn't so.
I'd get an OBD plug on there and log the MAF sensor to check the readings are sensible during driving... unplugging or running with a dud one will generally not be ideal in either case if you want to get the best from a remap.
Dave