ok basicly at the moment my car seems to stutter above 10psi when i have a boost pipe conected to the ecu, however when i disconect the pipe it runs fine above 10psi say 12.

it never had this problem before i have ran 18psi as my max boost in the past as this is what my metering unit is set up for, i have an unlimited boost chip and what i think may be happedning is i have a split ina boost pipe that is opening up above 10psi and causing a leak then the ecu detects this and then stutters.

I want to try and bypass this till i put new samcos on, if the ecu has nothign to do with boost why run a boost pipe to it surely it needs a boost reding to do something or is it purely there for when ppl are running ecus with a 10.5 boost limiter?

In which case it wont matter if i run a boost pipe to it or not as i already have an unlimted boost ecu?

Thanks Paul.