Problem with KAT

[blazn240sx]

have major problem
when car idel it idel fine
but when i hit the gas and release it it dies
look for all possible vacume leaks none found
car drives fine with no turbo but when hook up clold pipe
same things happen
running t3/to4e turbo, top mount manifold, and apexi gtspec intercooler
cant find any vacume leaks and wanting my car to run fine on stock mafs b4 installin cobra mafs with jwt ecu and injectors
the only way i found to keep it ideling was to up the rpm to about 2k and run boost but then it will seem like it going to cut out then raise back up my vacume hold also.
any tips are welcome thanks alot
also have check engine 2nd o2 and egr this is a 95 s14 wondering why it has a 2nd o2 neways haha and can it be my egr that causing the ruff idel thanks people

[nistech]

auto or manual?
if it isnt vac line it might be some kind of fuel problem it might just run lean when u have the turbo on. are u sure it isnt vacuum line? check for cracks it doesnt have to be disconnected. my old s13 use to die on idle sometimes and the vacuum line had a crack but it was hella hard to find

[orion::S14]

If the EGR valve is still connected to a vacuum source, it can be sucked open when you blip the throttle and cause it to stall and die...

But see if there are any other vacuum/boost leaks...pressure test the intake manifold with an air compresor.

- Brian