Apologies SmikeEvo, Forgot about the policy.

 

No worries.

 

Fuel cut is designed to limit the intake of air into the engine not disable the car. It is momentary and regains normal operation after the limit is hit.

 

Probably hitting higher load in 4th. Talk to your tunner and see if everything still looks good in a 4th WOT. You just might need to up the fuel cut threshold.

 

I got the same symptom after a tune. Feel like a huge hesitation. However sometime I got a CEL (Don't know what code for now but I will get it next week).
Some people said maybe I over boost, but I will get next week my Tatrix cable + a innovate WB to start data acquisition.

 

How much power are you pushing?

I had an odd issue when my clutch was going out, where when I was WOT right at peak boost the car would actually pause or the RPMS would fall backwards because the clutch couldn't handle the peak torque - and then it would pick up right after that and continue on. Now the clutch slips in every gear. We thought it was a boost leak at first, since the RPMS would just fall instead of climbing

 

sounds like a fuel cut to me

 

Was your tank low? You could have hit fuel pick-up issues.

 

The fuel cut is a response to an over boost condition ?
How can avoid avoid that fuel cut ? I got the feeling this is what I got too

 

mine used to do that, it was a boost cut that was programmed into the (shi**y tune). it did set of the cel on occasion as an engine overboost condition.

 

+1
I think in the other thread he did mention something about a turn or steep grade?

 

Thats exactly what used to happen to me. I found out it was my engine misfire due to my spark plugs.

I went one step colder on the plugs and it hasn't happened since.

Change your plugs, esp. try to go one step colder than what the Evo X calls for.

 

Thanks for all the suggestions, I'll look into these, When I get a chance I'll pull my plugs.

 

Hey guys, I moved this over the Engine/Turbo/Drivetrain section. That's a better place where you'll get more of the forum "experts" involved.

Good luck with this.

 

You either need to reduce the boost maps or increase the boost cut limit in the ECU mapping.