Can anyone help me, i have a RB5 non Wr. Scoobysport B/B and Center with a xterme scoobie's D/P. Just been Rolling roaded and got 242bhp and 223lb/ft, is this about what i should get, torque sems a bit low to me?

Also, when in fifth on full throtle my boost keeps going jumping between 10 and 17psi, SECS is not showing any alarms. does anyone know what this could be?

 

Steve

Your figures could possibly be right as all you have done is made the exhaust more free-flowing, without adjusting the fueling etc to compensate.

Have both your MAF & Lamda sensors checked and seriously consider fitting as a minimum a knocklink.

The variable boost under load is again possibly as a result of your exhaust system & there is a term for it I forget, but is resolvable by either fitting a 3 port solenoid or a dawes device or possibly just cleaning it. Do a search or check back over the last 10 days of posts in here/Drivetrain as this subject has been covered recently.

I would have thought that boost that fluctuates like that won't go to give the best RR results either

 

Clicky!