Hi,

 

as title really - it is tt import - it idles lovely and when driven through the gears normal driving it feels fine (maybe a very slight lumpyness) but under hard acceleration in first and 2nd is fine - 3rd, 4th and 5th as soon as the turbos kick in it misfires and pops through the exhaust very loud - it does get less after 4250 but still not smooth - it has an apexi filter and even in good weather is the same - if revved when standing its revs clear so only under load - i suppose a needle in a haystack but would be grateful of where to start - it has had full service, plenum pull, and cambelt service in october - any help much appreciated

 

regards

 

dave

when was the last time spark plugs was changed ...

or u could have a boost leak as u say it only happends on boost

Maf playing up under load?

hi,

 

many thanks for response - spark plugs were changed at time of service and has only done about 500 miles since - i have checked the small pipes that i can see is there any other way of checking for a boost leak - i will try and get hold of another maf to try i think and start trying to elliminate some ideas

 

regards

 

dave