hey guys. i have a s2 escort turbo and ive just popped in a new engine and head. got it started and running and ive done nearly 100 miles in it now. i wanted to test out the boost in it. i havnt planted my foot or anything but it seems that when i put my foot on it a fair bit it boosts out of vacuum by about .4 bar (thats all im taking it to at the moment) and it doesnt have the pull it did before i changed the engine. i think this might be coz the engine is still tight but i still have a worry in the back of my mind of what it could be. also boost comes in earlier than what it did before!

another thing is the idle is REALLY crap. at cold it idles brilliantly but when it starts to warm up it starts goin to about 700 RPM and the boost guage flickers like mad and most of the time it stalls! ive checked all hoses etc but its weird that sometimes when i give it a good revving it stops for a while and idles normally?
i've tried 2 turbos on it and both do the same thing?!

am i being dumb or am i missing something?

cheers guys!!

Sean