Hi.
We put in a jetta mk2 a 1z engine with a big turbo from a 2.5 v6 and some cheap 260 injector nozzles, after finding how difficult is to remap on a msa15 we put in a mk4 alh edc15vm ecu. The problem was from the begining even with 1z ecu. If floored in neutral and gets over 4k rpm the engine misfires badly and rpm drops and even stalls if not pushing accelerator pedal and still misfires bad like it runs on 2 cyl. After few seconds engine is running smooth again. Same happened with the msa15 ecu only when i gave the vnt turbo direct vacuum.
On the road from 1st to 5th is all good.
So if low boost is all ok, what happens, could the pump run dry or what, what do you guys think.
Timing is a bit on the low side, IQ is at 3,2 mg.
We put in a jetta mk2 a 1z engine with a big turbo from a 2.5 v6 and some cheap 260 injector nozzles, after finding how difficult is to remap on a msa15 we put in a mk4 alh edc15vm ecu. The problem was from the begining even with 1z ecu. If floored in neutral and gets over 4k rpm the engine misfires badly and rpm drops and even stalls if not pushing accelerator pedal and still misfires bad like it runs on 2 cyl. After few seconds engine is running smooth again. Same happened with the msa15 ecu only when i gave the vnt turbo direct vacuum.
On the road from 1st to 5th is all good.
So if low boost is all ok, what happens, could the pump run dry or what, what do you guys think.
Timing is a bit on the low side, IQ is at 3,2 mg.