Fuel Cut? Plz Help

[R33silverS2]

Ok I am not reffering to the rich and retard mode which gives you the power dip, but rather a violent cut / stop when on WOT. I had my SAFCII dyno tuned and when i first drove the car all was fine. WOT 11psi all good. Then later that night i went to give it a squirt in second and as the boost pushed 11 and was on the increase, usually gets to about 12 for a bit then drops back down, the car violently cut out and felt like the brakes had been slammed on.

I have done heaps of searching on fuel / boost cuts and rich and reatrd etc but I have only now experienced theis problem after i got my SAFCII installed and tuned. Before the SAFCII the car could go to around 1 bar without this violent cut business. Over 11 it would usually expereince the reatarding and richening up of mixtures but never cut out like that. Anyone know why this is happening now with the safcII??? IT was quite cold outside but the boost certainly didn't get over 12psi, and it did it in 2nd and forth - feels terrible! Ideas's Comments??

Thanks

[R33silverS2]

bump, any idea's plz????

[BHDave]

Does you boost controller have overboost protection?

[R33silverS2]

boost controller is just a manual type one. I never hit this before the safcII was tuned. it's driving me crazy...

[666DAN]

Fuel cut defender will sort it out. If you can get one that can be set to around 5.0V you don't lost too much resolution of your fuel MAP and it won't require much retuning of your SAFC

[R33silverS2]

hmmm just wonder why it didn't seem to suffer from fuel cut before the safcII...

[R33silverS2]

Does anyone think that it could be another component causing the problem that just coincidently happened after the safcII tune, 2 hrs hard reving on the dyno etc??? Coil packs?? or would it defienately be a fuel cut. Basically feels like someone slams the brakes on for a sec and if you arn't wearing a seatbelt you would fly forward..

[R33silverS2]