Taking ages to boost up ?
 

My erst takes ages to start pulling, just over 4000 rpm any ideas.

what boost you running , if its high its guna take longer to build up making it laggy . 4000rpm does seem a bit late tho , is it set up ryt ? might be worth getting it checked over by a pro .

..17psi. I took her for m.o.t emissions were so they messed about wihig4h th got problems with timing to its running really retarded if you advance it, it pinks. Also the screw what adjusts the throttle linkage position, is pusing the throttle open where before it wasn't even touching it.

mines runs 17psi also and my turbo starts spooling up bout 2000 and on full boost inbetween 3 and 3500 rpm i think , supose it depends on the setup you have tho

Mine starts pulling at 4000 rpm 4500 rpm its on full boost but then hits rev limiter which is 5800 so it dont feel your getting much pull in each gear, starting 2 think it might be turbo but dont smoke at al

mines the same ,dont really go anyway till 4200 rpm,then it runs out of revs,but i think its a stage 3 hybrid.so will be a bit laggier,but to be honest its crap lol