mitman1982

Hi every one i have a wrx import it use to be a auto but was changes to manual i have not had the car long after a day driving the car around it stared to feel like the car was missing on boost it had a z4 ecu but i change it back to the stander one thinking it could be that but now it feel so slow and still misses now and again pls pls pls pls the car is a p reg and only do 85 k i have tried to turn the boost up buy adding a boost valve but it gets worse iv change the plugs and leads but this has not helped was told these a wire on the ecu that need to be cut as the car still thinks its a auto . cheers Tim

satancom

If it was an auto then the original ECU would have been for the TD04 turbo.. As its had a Z4 fitted its a fair assumption that the previous owner fitted the bigger TD05 turbo when it was changed to a manual.. Its easy to check as its stamped on the turbo housing.

The TD05 will not run nicely on the cars original ECU (for the td04) and could cause big problems. Put the Z4 back on, make sure you use optimax/99ron fuel and maybe an octane booster as the Z4 will be mapped for 100 ron fuel.

Lower grade fuel will lead to detonation and will damage the engine. Find out which turbo you have fitted first.

20withascooby

how many times do you want to post this is th third diferent post ive seen