map pressure decreases under full throttle as rpm increases

[The Alchemist]

hi, this is completely NORMAL for a stock intake system and you should not be concerned!!! I've seen 100's like this
Fitting a good high flow (less restrictive) intake usually ends up with 97 to 98 KPA at the rev limit netting 8 to 10kw at the wheels gain....sometimes more once you redo the timing as the load points change under full load with a different intake.
My 2c.
Cheers,
Mike

[turnbull2003]

hi, this is completely NORMAL for a stock intake system and you should not be concerned!!! I've seen 100's like this
Fitting a good high flow (less restrictive) intake usually ends up with 97 to 98 KPA at the rev limit netting 8 to 10kw at the wheels gain....sometimes more once you redo the timing as the load points change under full load with a different intake.
My 2c.
Cheers,
Mike

sorry to bring up an old thread, the intake was the cause, i fitted an otr and now at wot the vac starts at 102 and only goes to 100kpa and feels much more lively