While I'm waiting for my wideband to get here, I'm still trying to figure out why I'm shutting down at 5000rpm after the 181 install. The ecm acts like it shutting the down the motor similar to traction control. The "torque limiter" has been mentioned. How many have had this issue? I was tuned by Eurocharged. I've email them about the setting. Fuel pressure was checked at 62 psi idle and under load. Any more suggestions?

 

your missing the obvious. FUEL PUMP! Try a sl55 fuel pump and retune. problem solved. and no wot runs until you can datalog afr, timing, boost and iat's. with this data jerry can nail the tune down for you
btw i have seen this issue first hand with grip grip's car. same pulley, and tuner. lean over 5k at the track. sl55 pump and retune and he is stiil in need of another retune. low 11's afr at wot thru 4th gear. dataloggs dont lie

 

I was trying to identify the problem with the wideband first before I started buying parts. Hopefully, it will tell the tale.
I'll be getting the sl55 pump or the walbro when I figure it out.

I still thing something else may be going on. The car cuts off like a switch.

 

Just try it with the stock intake assy.

 

Right after my tune, I was accelerating hard on an onramp and, for just a moment, the entire car shutdown. I went back to Eurocharged and they removed the torque limiter. Problem solved.

 

If fuel pressure holds steady at 62 psi and does not drop at WOT and loaded, then the fuel pump is keeping up with demand and is adequate.