RB20 w/ Apexi AVCR fuel cutting, WTF?

[apollas]

Last week I recently had my stock s13 rb20 dyno tuned with the Apexi AVCR boost controller and Apexi SAFC. The SAFC worked perfectly fine and we were able to adjust the a/f but when we set the boost controller to 1 bar it began to fuel cut @ around 4.6-5k rpm. Anyone ever ran into this type of problem with the apexi boost controller? I was told that it may be a bad solenoid but I would like other opinions also.

When we disconnect the vacuum and revert back to the stock vacuum it ran perfectly fine.

And anyone who is curious, the stock motor mad 202whp before tune and 229.3whp/264tq with apexi avcr/safc @ 4600rpm/1bar <--(fuel cut) after the tune.

just for kicks a heres a lame vid of the tune mid way: http://www.youtube.com/watch?v=5weBW0v5M_g

[Cjmartz2k]

Your right, that vid DOES suck. Nothing but loud white noise.

I can't hear anything, but I'm guessing your coils might be breaking up, and it's not boost cut. Also, quit running the damn stock turbine at 1 bar before it ****'s itself out the tale pipe.

[Yellow4g63]

You should get rid of that SAFC and get a nistune daughter board. The SAFC will advance your timing when you start to lean it out the a/f. The fuel cut could be a boost leak so double check your piping.

[apollas]

You should get rid of that SAFC and get a nistune daughter board. The SAFC will advance your timing when you start to lean it out the a/f. The fuel cut could be a boost leak so double check your piping.

its definitely not a boost leak. all clamps are tight. like i said, when I connect the avcr vacuum line, it starts cutting at exactly 4600 but when I revert back to the stock line (basically meaning i stop using the avcr and run @ stock boost off ecu) then i can bring the car beyond redline.

[Yellow4g63]

its definitely not a boost leak. all clamps are tight. like i said, when I connect the avcr vacuum line, it starts cutting at exactly 4600 but when I revert back to the stock line (basically meaning i stop using the avcr and run @ stock boost off ecu) then i can bring the car beyond redline.

Whats your vacuum at idle? if it's not 18-20in then you have vacuum leak. I ran 14psi on the stock turbo before. Never had fuel cut or anything but I knew the injectors were very close to maxing out and the turbo could crap the blades at any min. Maybe your coils are going bad.