Supra Drift Car, Emu Black , 1.5 JZ , problem cut and bug

Hi, I rencently build my mk3 supra for drifting 1.5jz with a G101A transmission running on emu black.

Motor is a 2jzge block with a 1jz VVTI head, Bc272 cam, spring, retainer, 1100cc injector, doc race turbo manifold, TPC G35-1050 turbo, fluiddamper crank pulley, 90mm bosch intake...

Running a AEM400 external pump, 8An line PTFE both way, aeromotive fpr , flex fuel sensor (running 91 pump gas mix with E98)

First time I go drifting the car working great, but the serpentine belt flying off after 10 sec. So I delete everything p/s, water pump and put some electrical one.

Second time I go drifting the car keep cutting, got some fuel problem, that is now solve.

Yesterday, I go drifting, and the car continue to cut. I got some log and video of this. If y clutch kick, handbrake, or keep the motor on fevlimiter for too long it cut. After that even if i give throttle rpm dont raise normaly.

If someone can help me on that would be really appreciate

When the car work on the video its the log at 2:20 approx

Found something at 1:47 , My lambda turn inactive , then afr stuck at 11.4

Is there a part of my problem ? and what can cause this

Your fuel pressure delta is all over the place; it should be solid at your base pressure.

at 2:18:83 in your log your engine loses sync whilst at 2000 RPM, I'd say your stalling issue is trigger related

But my fuel pressure goes up as my turbo build press. I dont understand how my fuel pressure can be a problem... my motor get all the fuel needed nah ?

When you talk about the trigger , you mean the crank ? cam ? .... Cause I remove my belt from my cam pulley and crank pulley to install my water pump delete from rad industries. I take all precaution to put back the belt at the same place..

Also what do you think about ,.. Lambda is valid : Yes ... and then at 1:47 it goes no longer valid

While the absolute fuel pressure will rise with boost, by using a fuel pressure regulator that is manifold pressure referenced, you would expect the differential pressure to remain constant. Chris is pointing out that your's is not. So are you referencing boost pressure (ie. before throttle) or manifold pressure (after throttle)? Or perhaps your fuel system can't keep up with the flow requirements at higher pressure.

Triggers issues are with your Crank and/or Cam sensor -- if the ECU can't keep track of the engine speed and crank angle then it's can't provide the fuel / spark at the correct time either. Most ECU, will stop on a trigger error and wait to see if can re-acquire the pattern it expects.

You asked for help, and this is valuable insight.

Yes, thanks for your help, its really appreciate. I’m not a pro in this , and my english is not perfect, so the mix of two make things more difficult for me to understand.

for the question you ask me David, my fpr is set with is own vaccum Line from the manifold.

running E40-50 ish, on a aem400lph for 500whp…every tuner I Ask arround where I live say my fuel pump is more then enough

But I saw as you say, my fuel correction all over my log is always like 100-120% . Is this can be because I play with my base pressure on the afr screw. Try to put it back at is place but maybe a few psi more or less of what its been on the dyno. Because i cant see what else it could be. Everything is brand new, 8an pfte Vibrant , radium fuel cell, i already try different fuel pump, look inside my fpr is like brand new, radium fuel filter new…

For the trigger problem i think im gonna send my car to my tuner for this, its a bit over my capacity, didnt understand Well this part. Everyone got is job , im a lineman , i do car thing as a hobby ahah, an expensive one lol

The trigger issues are your primary concern but you may want to consider a surge tank or keeping your fuel tank close to full if you are getting inconsistency in differential fuel pressure.

I got a surge tank already… but my surge pump is old, I order a new one from aeromotive 340 stealth.

also, my fuel cell is a 10.5 gallon and always going full tank

maybe I should consider a dual pump

Also I didnt know if you can see that on the log, but is my wiring polarity is good for the trigger ? Made my own harness and maybe I made a error there I dont know ...

Here's a webinar on fuel pressure, Andre uses the term 'differential fuel pressure', in the ECU Master system it is 'fuel pressure delta'

Fuel pressure webinar

Here's a webinar on trigger systems. He is using a Link G4+ ECU, but every ECU uses the same information. The fact that your tuner has managed to tune the car, and the issue is only happening on track,k I would guess it is a faulty sensor that shows once the sensor is hot enough

Trigger webinar