Conversation Between Shaun and rickya

What went wrong!!
I went to Lichos today & had following:
Service; Prodrive 3 port boost; Forge 1.4 bar actuator;
Last week I fitted full H&S 3" decat system with jap style angled exit; heat wrapped. Also have K&N air filter & Hyperflow topmount.

Then after Lichos went onto Powerstation rollers with Rich mapping. For 1.5 hours we couldnt get decent figures & engine pinking with a little det (& upto -10 degress retarding). Rich though contaminated Vpower so we drained fue & I filled up again with Vpower. This time no det & +7 degress advancing.
But after a further 1 hour only managed 340bhp with 370 ft/lb torque



What do you reckon Shaun? Im confused & a little dissapointed. Not sure what to do next. I was hoping for 360bhp plus.