Help me solve Kpa issue
Help me solve Kpa issue Working on an auto heads/cam vette.
New Vararam
New cam
ported heads
fast 90/90
78mm granatelli MAF
Key on/engine off MAF reading was 102kpa on the track but at WOT we were getting 98kpa on our logs
Same thing on the dyno we were getting 4kpa less at WOT then with key on/engine off.
Any ideas what is causing this?
Does this suggest a restriction?
Do we need a larger MAF?
How much loss of power is 4kpa?
Thanks
New Vararam
New cam
ported heads
fast 90/90
78mm granatelli MAF
Key on/engine off MAF reading was 102kpa on the track but at WOT we were getting 98kpa on our logs
Same thing on the dyno we were getting 4kpa less at WOT then with key on/engine off.
Any ideas what is causing this?
Does this suggest a restriction?
Do we need a larger MAF?
How much loss of power is 4kpa?
Thanks
do you get max MAP (not MAF) of 98kpa at all rpm or just upper ones? do a pull in one gear from like 2000 to 6000+ and you should see if it's always at 98 or does it start off at 102 and drops off to 98kpa. if it's always flat then there's no bottleneck, it's just current atmospheric conditions, but it if drops off you got a bottleneck.
