Sure i will, i just wanted to know if AVC-R's output is really something out of ordinary and if that could be root cause of the problem.....once things will get hot, it does not make difference if its plugged in or not, but it can help to make it hot in beginning...

I plan on doing more diagnostics of injectors under load, waiting for friend to arrive with scientific equipment.
In meantime, i will make some cooling blocks out of computer coolers, attached to ECU.....this should not hurt anything, but it will help to cool down ECU itself.....

 

Hooked up MAC boost solenoid and set up closed loop boost controll, AVC-R removed completely.
Next race is one month away, unless friend will come with some new diagnostic tools, i have no way to test.

Planning on removing rails and testing all injectors, measuring if any of them does not draw too much current (partially seized injector etc..)...

 

Another update from yesterday.
Run some test/adjustments, rewired suspicious, tried different settings and problem is still same, ECU is shutting down injector drivers randomly, mostly after harder use on race track - (drifting, keeping car in high rpm's / load)

Another idea we came up as possible source of problem.
Stock primary injectors are maxing out in high rpm and putting too much stress on injector driver.

My primary injectors duty cycle goes up to 99,3% and thanks to Primary Hold setting in ECU Manager could stay at that level for some time. I plan on switching to Common Mode which should kick down primary duty cycle at the cost of higher secondary duty cycles. Current highest secondary duty cycle is around 66%, while primaries hitting 99%.

Moving staging bar from 10kpa to 0kpa or even to vacuum should help too.
Of course it means adjusting whole fuel map, but it needs to be done. Might as well bump up base fuel pressure while i am at it, that should lower the duty cycles too.

 

i like that idea. less duty should help.

you could also try some kind of fan/cooling on the ecu, to see if that changes anything

 

Already have heatsink on ECU and highest measured temperature on outside of ECU is 40C

 

Ok, more updates

Switched to Common mode, moved staging point lower, re-tuned fuel map but problem still persist.
Injector duty cycles are hitting only 70% in peak now(both primary/secondary), but ECU is still hot and after one hour of beating it, it starts shutting down injector driver.

Turning key on/off (reseting ECU) gets it back running immediately, but once higher rpm's/boost is applied, it overloads and shuts again.

 

My PS1000 does a similar thing sometimes while on extended highway drives (hot), not regular daily driving.
My injectors die out causing me to pull over... I dont lose my tach or any other accessories. Sometimes I'm abled to cycle the key while coasting, and it will reset. Other times, Im forced to pull over wait a few minutes and it will start right up.. I feel like something might be overheating and cooling down, that why it take different amount of time evrytime it dies. Im not sure its the same issue as yours but very similar. My EBC is not connected in to any of my wiring. Next time this happens I will see if my ecu is getting abnormally hot, it is in the same spot as the stock ecu.. im using all low imp injectors.. and have my base pressure set at 43.5psi.. I did not tune the vehical and dont know what my duty cycles are.
James

 

James

First i tought i have to wait for it to cool down for restarting, but key of/key on will re-set injector driver and car will start again immediately...as well, key off/key on will get engine back in running condition always if done while coasting.

Are you injectors all new or used?

Do you have CDI ?

 

the issue, I have is not reavant to rpm or boost, at least not what Iv noticed, but its always while cruising..
The reset time I expieriance is always different, but never long.. Some times cycling the key will reset it right away, and some times im forced to cruise to the side of the road and wait 30sec-min and it will start and run like nothing happened. It is very random and does not happen on any set condition that Im aware of.. I cant duplicate it..
I have all new injectors and this issue has been happening before I switched my new set up,
while the vehicle was down for constuction I even had them cleaned and flow tested..
I am using the stock FC coils.

 

My problem appears only after stressing car a lot, high load and high rpm, but the shutdown itself does not necessary happen right at these high values...and once it did shut down and i restarted it, it would die again at next boosted run or very soon...and only related thing is temperature of Haltech ECU...

I am just about to cut the ECU case, put computer fans on it and see if that will help.

 

Now, new idea to deal with problem :

If my problem is really caused by shutting down injector driver, i could run secondaries on external injector driver (taking the heat out of Haltech)

http://www.fjoracing.com/products/injdrvr/

I just need it here tomorrow, to try it out

 

Ok, here is my solution which actually fixed problem.

I drilled two fairly large holes into PS2000 case and fixed 2 big computer fans on it and run car with it last 3 races. When i forgot switch fans on, ECU will shuts injector drivers occasionally....when i have switch on, it never dies.....

 

Sigh. Aftermarket parts.

 

its a ghetto modding. I think something wrong with your setup like injector omh setting. try to re-check all around. It will be nomerous of problems if u forgot one wire to connect (like gnd and etc). You have two way to explore: first -injection. Second is ignition. If they works fine try to get another 100% working ECU.

 

Like i said, problem fixed.

 

I have had two haltechs with the same problem. After a lot of stressing injectors disappear. We made a similar solution as above. Haltech flat out deny anything as wrong. Typical.

 

interesting. have to remember this one.