causing

ive just recently installed my gauges everything working ok now :) apart from T piece, with the T piece on i get a chatter when changing gears! so i thought id take it off and try with just the vacum pipe on the dump valve and that was fine just got a woosh from the DV, im sure ive got it...

just got the lcr mot and the exhuast CO reading was 0.709 on the first fast run and 0.430 on second run, shud be 0.200? anybody got ne comments to help me! its a custom made 3" turbo back system with a 100% cell race cat, ive put cataclean into the system to try and help but aint had it tested...

when car maintaining speed (ie foot just on accelerator enough to stay at same speed) getting occasional jerk from the engine, a sudden hesitation. DOing it in all gears (well don't know about first because never just maintaining speed in first, always accelerating to some degree!), from 2nd...