Just got my car back from KR Motorsports. I had them check over my work as this is a fresh build and they said everything checks out and my tune looks good. However, on the ride home this happened. Whenever I get on the gas slowly, its fine. whenever I get on the gas a little faster, this happens. Tach goes to 0, AFR, shoots up and all boost is cut suddenly. What the hall is happening? Tune issue or mechanical problem?
Thanks

 

The car is not dyno tuned for power yet, this is just the break in period so the tune is set for driving but not final by any means.

 

The video is not long enough.
Show those slow pulls
Can you run under boost?
Then show multiple instances for the cut issue and the recovery from the cut.
I'd guess a safety cut out setting is too low but 4 second video makes it difficult to diagnose.

Have you called KR about this?
I would have done that first.

 

I'll call them and get some better video tomorrow

 

A datalog would give a definitive answer but tach dropping to zero is most likely a cam/crank signal issue. Could also be the ecu shutting off entirely.

 

What ecu is it on? Make sure it isn't hitting boost cut.

 

Had this sort of thing on one of my old builds, turned out to be the connector from the crank trigger wiggled enough to be intermittent

 

I'm a dumbass who thinks he can drop spam links here, so now I'm permabanned.