hi flks-can i pick your brains
recently bought casa engined 3.0 tdi q7 [09]
it had sometimes egr fault showing on vcds scan-mostly cold start-very occasional limp and glowplug light
it threw two egr related codes the solenoid and egr flow itself[lost the pic i had of them sadly]
no other engine faults whatsoever[75k car
so long and short of it decided to get remap and egr/dpf/flap delete as egr is a pita on these
got it remapped and it still sometimes went on limp-no storedcode on ecu,no eml or glow light[that was within a day of map-i tried to blank egr at front cross pipe and it immediately went onto permenant limp until i removed the blank
i could still see the egr function,required and actual flow,plus the flaps,and even test flaps on vcds-is this right on a deleted car?
the mapper gave me another flashed file but car is far worse,if it sits idling or going slow for any length of time it will go on limp-again no stored codes,and i can still see all the egr /flap stuff on vcds
same when fitting the front blank,permenant limp until removed
the mapper said it was the dpf doing this but as it was fine and flowing well before the map[and goes like a train when on the open road] i havent yet gutted it,but what i did do was undo the 3 turbo to downpipe bolts and pull the pipe back off them so removing any potential backpressure-still onto limp[and loads noise of course]
reluctant to gut dpf as i am then commited to stay deleted as it were and its not working-whereas at the moment i can get my original file put back on the car and at least fault find etc as i have no codes for this on the remap
anybody offer some some advice[i know find another mapper will be one but i am kinda stuck atm but my hand may be forced as he has gone onto radio silence mode]
i should maybe have either replaced egr/cleaned up or used a one stop map/gut service
would it help blanking egr at turbo end -looks a pig to get into tbh and i have heard the torx can break there
your thoughts please,i have at the moment 2 tonnes of very expensive to tax scrap metal at my door...
recently bought casa engined 3.0 tdi q7 [09]
it had sometimes egr fault showing on vcds scan-mostly cold start-very occasional limp and glowplug light
it threw two egr related codes the solenoid and egr flow itself[lost the pic i had of them sadly]
no other engine faults whatsoever[75k car
so long and short of it decided to get remap and egr/dpf/flap delete as egr is a pita on these
got it remapped and it still sometimes went on limp-no storedcode on ecu,no eml or glow light[that was within a day of map-i tried to blank egr at front cross pipe and it immediately went onto permenant limp until i removed the blank
i could still see the egr function,required and actual flow,plus the flaps,and even test flaps on vcds-is this right on a deleted car?
the mapper gave me another flashed file but car is far worse,if it sits idling or going slow for any length of time it will go on limp-again no stored codes,and i can still see all the egr /flap stuff on vcds
same when fitting the front blank,permenant limp until removed
the mapper said it was the dpf doing this but as it was fine and flowing well before the map[and goes like a train when on the open road] i havent yet gutted it,but what i did do was undo the 3 turbo to downpipe bolts and pull the pipe back off them so removing any potential backpressure-still onto limp[and loads noise of course]
reluctant to gut dpf as i am then commited to stay deleted as it were and its not working-whereas at the moment i can get my original file put back on the car and at least fault find etc as i have no codes for this on the remap
anybody offer some some advice[i know find another mapper will be one but i am kinda stuck atm but my hand may be forced as he has gone onto radio silence mode]
i should maybe have either replaced egr/cleaned up or used a one stop map/gut service
would it help blanking egr at turbo end -looks a pig to get into tbh and i have heard the torx can break there
your thoughts please,i have at the moment 2 tonnes of very expensive to tax scrap metal at my door...