I have been out starting to tune again. I have my 8 psi runs done running around right at 12 AFR. I have added extra fuel for protection above that over a base of Chuck's map. Ignition has been retarded 2 degrees up top from his as well. Anyway running the boost up to 10 psi, I know I'm running rich 10's. I'm running into what I believe is ignition cut out but wanted to be sure. The car will boost like normal up to 8 or so and then cuts out and then will try to boost again and cut out again loosing boost. I didn't do it but two runs as it scared me a bit. I have some new plugs B9EGV's on the way but have just cleaned the old ones not long ago BUR9's. When i go to change the plugs I will check the resistance on the wires. Is there anything else I should check? Another thing that changed since last I tuned is I added a Turbo XS Type H BoV, Could it be out of adjustment and causing this issue. Just want to be sure I'm checking everything. Let m know if you think of anything else I should check. Thanks

Here are my mods
Walbro
1300's
PFC
Datalogit
3in on back
Intake
SMIC
MSD 6A (Leading)
Non-Seq
Bur 9's all around
Turbo XS Type H

 

The PFC controls max RPMs by turning off the fuel injectors, not by timing control. This is not a good way. This max rev point is set with the PFC or DATALOGIT.

The PFC also does the same thing for overboost protection. If using something other than the PFC to control boost, the PFC still has to be set up for more boost than you will run to prevent fuel cut.

The only ways you can be having ignition cut are : (1) if your MSD has a built in adjustable rev limiter or (2) you are running so rich the plugs can not fire.

 

I probably should not have used the words ignition cut, instead break up. The settings for fuel cut are both above what I was running when I had the break up. I had never been in a car where the ignition may have been breaking up so I wasn't sure whether my symptoms sounded like break up or something else. My MSD unit does not have rev control so that takes that out of the equation plus I tried running at high rpms with low boost to see if was RPM dependent and it was not. If I get the plugs in tonight I will try it out again.


Thanks

 

Not unless you got the apexi pro ecu, the ignition cut on that is very violent.
You'll get a very loud bang and a lot of black smoke out the exhaust when you hit it