I popped down to Surrey Rolling Road on Saturday in order to see what sort of numbers the car is making. The car is standard (to my knowledge) with the exception of a new panel filter. On the whole I am very pleased, but there is one particular area that I am a little unsure about.
On the boost graph it peaks at 1.3 bar at 3,600 rpm, but then pressure steadily drops throughout the remainder of the run to 0.9 bar. Shouldn't the pressure remain more or less constant once it has reached the peak or is this the sort of thing I should be getting?
BHP/torque
Boost pressure
AFR
Whilst I don't plan to do any major mods to this car, Charlie (I think he is the owner of the rolling road) had a pretty infectious enthusiasm so a call to JGM to book a remap may be in order fairly soon.
Cheers,
R