Thanks for input guys.
I'll ask the developers... Its strange that it's number 4 all the time - two FETs have died with the same injector.
It is the number 4, but not with the same injector because I have swap the injectors around for fault finding. My guess is probably the driver which controlling the no.4 cylinder FET is frying it... but hey.. i have very limited knowledge in electronics world and VEMs.
I have checked the resistance on all the injectors, they are all good.
While this is all well and good - its the fact that this installation has been run on the limiter for two years
I didn't have limiter on my 20v, hence I blew it up when i mis-shift in 3rd.... my fault... lol..
Out of IGBT, capacitor or irf640 solution, which one is the best and fixable solution? because i have a race coming up this weekend.
thanks in advance!