car idles fine, drives fine...usual warm up - cool down adheared to also...when i push hard threw all the gears ( 5-6000rpm ) when i come from 3rd into 4th i sometime ( not all the time ) get the car sudenly pulling up - then goes fine again, matter of a split second - lose of power - flat spot cant quite say..doesnt happen all the time, this causes prob's when trying to have it sorted..any ideas??? anyone??

99uk ppp decat centre quick shift - - so on so on...

 

Mine does it and I've read about other cars doing it. I guess it's normal.

F

 

could try changing the 02 sensor i done this to a car that had a flat spot and so far it's been ok had to put it on the gas tester to find it and the lambda reading was way to high. changed it and it was normal