If I'm in 2nd gear low revs and I put my foot down I get no boost till I change to 3rd. Same happens in 3rd no boost at all till I change to 4th..

This is not lag there is nothing at all right up till I change gear at 6K rpm.

Any ideas what is causing this ???

My car is a 03 STi
TD05 20G
Harvey up pipe
Ecutek mapped by A Forrest
Walbro 255 fuel pump
Hawkeye STi injectors
Decat down pipe..

It's been doing this since I got the car mapped but not long after the lambda sensor failed and I have not replaced it yet. Has anyone got any ideas

 

Has nobody got an opinion on this ??

Really need to get this sorted out cos it's doin my head in

 

Have you tried calling Andy and ask him? If its been doing since it was mapped i would call the mapper.

Change the lambda and check all you boost pipes as well, if it doesnt sort it out then call Andy

 

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Wastegate actuator arm come off?