Hi everyone, I have a tuned isuzu engine in my mk3 estate... have done the white ring mod, free flowing exhaust, short intake pipe with big cone filter, upped boost to 1.5bar, front mount intercooler and NA inlet manifold, as well as some increase on the max fuel screw.
This has been done for quite some time now and when it's running good it flies!! However I've noticed that over time it seems to gradually drop off on the fueling and get steadily less powerful. After turning the max fuel screw up some more it is restored again and runs great!
My question is, what might be causing this gradual loss in fueling over time? Is there something in the pump which is slowly wearing out with the upped fuel and thus slowing flow over time?
My other problem is that having re-upped the max fuel screw a few times now, I am no longer able to lower the idle back to normal as travel on the idle screw is run out!
Any help and information would be appreciated, thanks!
This has been done for quite some time now and when it's running good it flies!! However I've noticed that over time it seems to gradually drop off on the fueling and get steadily less powerful. After turning the max fuel screw up some more it is restored again and runs great!
My question is, what might be causing this gradual loss in fueling over time? Is there something in the pump which is slowly wearing out with the upped fuel and thus slowing flow over time?
My other problem is that having re-upped the max fuel screw a few times now, I am no longer able to lower the idle back to normal as travel on the idle screw is run out!
Any help and information would be appreciated, thanks!