hi guys so i have a whole lot of issues at the minute so please bare with me as this will be an essay:
so first off then a bit of back story in November of last year i upgraded to a nistune ecu and selin duel intake kit and it caused the car to run stupidly rich on boost below 10 on afr resulting in power loss and on top of that after every start up the car would fuel differently on cold start up to the point where the mapper would set up cold start get i t to where it was better then come back the next day and it would be well off again on top of this on the power runs the cigarette lighter would lose power and there was a electrical squeal picked up through the headphones while mapping,now i had none of these issues prior to going nistune and duel intake.
with me so far? ok so the logical step was to revert back to precious set up (single maf and previous map which ran great) we tried several different ecus combinations but even though being on the same map each behaved different on fueling for example my ecu and map was fine fueling where it always was but the map on the mappers personal nistune didnt fuel right now whats weird is when i originally had this map it was first mapped on his personal nistune then burned on to a chip then put into my socketed ecu so we were stumped why it didnt work.
i then took the car away and used it it idled from cold for a month fine but afr and afr on boost was good but i had a problem with it going lean on cruise after prolonged driving
, it was fine for say 45 mjnutes journey but anymore after that and is miss behaved and also had the cigarette lighter socketed continuously shutting off when coming on boost (checked for shorts to it couldn't find any) also i had noticed the voltage on my gauge when running was between 13.2-13.3 where it had been 14.1 when running before.
then the problems really started the car would overfuel on cold start and as soon as you tap the throttle it would overfuel to the point the car would almost cut up but once the car was driven and up to temp idle fuelling was fine and constant but was still is the issue of going lean on cruise plus now on boost in 3rd,4th,5th it would run 11.0-11.3 which it was mapped to on afr but in 2nd gear would be richer at 10.5-10.6 and i was advised if anything it should be cleaner in 2nd.
after a long discussion i was told it would need a new maf so i ordered a genuine one from z1 put it in and it made everything worse it would now overfuel on boost under 10.0 on afr and overfeul on cruise and cold start idle was worse so put the old maf back in, several people suggested the maf may have been on its way out when mapped and needing the map tweaking but after speaking to the tuner and considering i had a year of no problems on the map it simply couldnt be the case.
so to where i am now things have got worse its now any start up after leaving car to cool for say an hour it will overfuel when hitting throttle to move until fully up to temp,and now at the weekend it went to scary lean on idle and cruise 19.0 on afr so had to shut it off and leave the car as wasnt safe, i let it cool down and still running lean but if you tap throttle it went rich to 10.0.it still has the lower voltage when running at 13.2v but also has a slow starter like it gos to start then no noise then just burst in to life all in the turn of a key, yes battery was changed and still the same problem
so now i am completely stuck i just dont know where to begin or look i had a perfectly fine working car before trying to go nistune and since then its just gone downhill its taken me 5 years to get the car to this stage and ive still not properly used it i dont want to give up i want to sort it but my mapper is very distant and doesn't seem interested in sorting the problemso just looking for suggestions/advice and wether anyone has ever had a similar problem, hope you managed to stick through all the content and sorry for th essay lol
