On the weekend I put my xr6t in a dyno comp just to see what it made as I didnt have a figure yet, it made 288rwhp and all that's been done to it is bosch 42lb green top injectors , a rapid v2.0 intercooler, under battery cold air intake, the center muffler removed, walbro gss342 intanke pump and an xcal3 with generic tunes and it was on the 10psi tune for the run. To the point though, when it finished the run and was on back off it was making real loud popping sounds out the exhaust? could this be possible pinging and also when its on the 10psi tune when ya give it some spirited driving in all the gears but first it seems to get this real bad surging going on when it comes on boost. Could anyone shed some light on this and is that an alright power figure for what ive got done or should I be expecting anymore or less? Cheers, Matt.