New tune on the car and fresh build trying to get some WOT throttle logs. When going 100% from 3k rpms the car will make it to around 4500 rpm and build about 10psi of boost before it shuts down and cuts fuel. The datalogs are showing the idc's go straight to zero. I will attach a log to this post.

Has anybody experienced this issue before. It happens on every pull but if I let off a little to about 3/4 throttle the car will go through the rpms fine and hit 25+ psi of boost.

 

Anyone?

 

Are your plugs gapped correctly?
My EVO 8 had the same problems when I Installed new plugs without proper gaps. She would break up at whenever wot.

 

maybe a boost leak, or ignition problem.

 

Not an ignition break up issue. It is a full fuel cut not a sputter. I have also monitored fuel pressure when the problem occurs and it stays solid.

The ecu is cutting the injector duty cycle for some reason. Has anybody else experienced this or is there some sort of setting in the ecu that could cause this?

 

Did you figure out what this was? I am having this issue

 

What ROM are you running?
If it is a Tephra V7 ROM, what are your Fuel Cut multiplier and load settings at?
If it is a Tephra V7 ROM, is NLTS (no lift to shift) turned on or off?

 

it is a v7 rom, fuel cut mult is at 600, fuel cut load is 300 if that is right..? The fuel cut multiplier is hex 4D00 which is fuel cutx2 I believe..? I can send or attach a log if that helps. TIA also nlts shows to not be active in the tephra options

 

Post up a CSV log file with at least: TPS, RPM, Timing, Load, KnockSum, O2FeedbackTrim, FuelTrimLow, FuelTrimMid, Boost, AirFlowMUT2Byte, WBO2 and IPWMUT2Byte so we can see what is happening and help you diagnose the problem.

 

Hopefully this helps

 

@Mbhvac I see no fuel cut in this log. There is a lot of knock throughout the pull which could be due too much timing advance and a very lean fuel AFR. Boost only reaches 15 psi, indicating a problem with turbo, waste gate, a boost leak, or a combination of all three. Difficult to say without more detail on your build, mods list and ROM
Don't drive it in boost with your current tune as you will damage your engine.
Run a boost leak test and fix any you find. Pull your plugs and check their health then set the gaps correctly. Check fuel pressure at the rail to determine the health of your fuel system - should be 43.5 psi with the vac hose disconnected.
Your injectors are not scaled correctly. Tune your injectors to get Low and Mid LT fuel trims +/- 5. Once you have these basics in place then move on to tuning ignition, fuel and boost.