hey guys and gals i'm quite new to suby's but am learning quick but i've got a peoblem with my 1993 wrx jdm impreza,
if i am accellerating the car drives fine but if i try to cruise and just maintain a set speed 30mph round town or 60-70mph on motorway it hesitates/stutters/kangaroos whatever ya wanna call it i've done usual things changed plugs for new ngk platinum, full oil and filter change with 10w-40semi as it's got 100k on clock. tried maf sensor. replaced turbo-intercooler pipe as it was split, replaced both springs and both pistons in my forge atmospheric dump valve as it was leaking slightly but i still can't work out why it hesitates when cruising.
it's also in for a new box the moro as 5th was shagged when i got the car.
it's got samco hose for turbo-intercooler pipe
forge dump valve
cat back stainliss with 4"pipe
it looks like the centre and front pipes have been cut open in past and has had cat/silencing removed
however it's running standard air box with hks panel filter
standard map and boost so if anyone has any ideas don't be shy i won't bite