I have just had my m43 1.9 remap done by quantum tuning.Its a good job, sharper throttle response, freed up a few extra horses. That's something i intend on doing to. as far as i think its an E.G.R delete is needed. Its not difficult, just remove the egr and blank it off. If he has not removed it and put a blank in, then the gases are still free to pass through. the egr position sensor will still work ether way.

 

I managed to find out how to do it, I have checked and it shows 0% activation so confident the operation has been disabled I haven't blanked either

 

you will still have to plug the egr little blue and black vacuum rubber hose,this will stop any unwanted fumes getting back in to egr itself

 

How did you go about the deactivation??

 

Sorry re phrase. how did you check that it was deactivated??

 

I think it was in dis sensor or service function the go into egr operation just came across it

 

But the operation on e90 loci is controlled electronically theres no vacuum hoses that I can see

 

just noticed its a e9x mark,thought it was e 46

 

In a nutshell; with regard to EGR disabling unless the EGR vacuum solenoid has been mapped-out, the vacuum pipe should be blocked. (....and even if the EGR has been mapped-out, I would still block the pipe for safety's sake) If the pipe isn't blocked you have an air leak in the inlet tract that will cause weak mixture. Weak mixture is not good!Just leaving the tube open to the atmosphere is what causes the air leak.