Missfire / Fuel Block / Afm Issues?

[dnbutts]

Hi all,

I have a stock standard 33 series 2 gtst atm (appart from pod + manual turbotech boost controller). Installed the boost controller on the weekend and am running around 6 pounds or so (according to the gauge).

Now, anything over 4000 rpm with hard throttle and the engine starts struggleing, refusing to rev, jumping around etc. I have checked all the boost controllers leeds + fuel pump and air filter and all seems to be working fine.

I also filled the tank totally while doing it too with BP ultimate. My mechanic said possibly a dodgey batch of fuel or some sort of fuel blockage???

Just after a bit of help if necessary!!!

Cheers!