Can MAF flow be used to calculate horsepower or Inj duty cycle?
05-23-2008, 01:07 AM
#1
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Can MAF flow be used to calculate horsepower or Inj duty cycle? I am trying to figure out if the dyno is reading incorrectly (which i think it is)...
Ive got a injector duty cycle of 119% (which im going to swap to 42lb'ers tomorrow). MAF Air flow of 40.31 lb/min. Map peak was 98 kpa.
and im getting a peak rwhp of 310 rwhp with converter locked.
The shop next door to mine just got a brand new $50k+ mustang dyno installed. full eddy current, dragstrip simulator (which is BAD ***) etc. This is the first car that has been strapped to the dyno to test its function etc. Brand new.
We just finished putting together my 00 SS (stock short/heads, 234/238 @ 111 camshaft, fast 92/92, 4l60e,edge 4000rpm stall, 4.10's stock rear, longtubes/true duals, stock 26# injectors, all bolt-ons etc..
I expected the car to put down about 400-415rwhp on a dynojet and I put a nice street tune in the car before we started. 27.5 degrees of timing, no knock retard. The car hasnt been driven since all the modifications but it put down a max of like 310 rwhp with the converter locked. I expected 380-390 with it being a mustang dyno but those results seems pretty unbelievably low.
We made a full 1/4 mile run with the eddy current set to 3500lb race weight and chose the aerodynamic file for a 00 camaro.
Car ran a 11.55 @ 113 with a 1.50 60ft. Launching the car on the dyno is pretty cool, it dead hooks with no effort.
I logged the run and attached the hptuner file to this
Ive got a injector duty cycle of 119% (which im going to swap to 42lb'ers tomorrow). MAF Air flow of 40.31 lb/min. Map peak was 98 kpa.
and im getting a peak rwhp of 310 rwhp with converter locked.
The shop next door to mine just got a brand new $50k+ mustang dyno installed. full eddy current, dragstrip simulator (which is BAD ***) etc. This is the first car that has been strapped to the dyno to test its function etc. Brand new.
We just finished putting together my 00 SS (stock short/heads, 234/238 @ 111 camshaft, fast 92/92, 4l60e,edge 4000rpm stall, 4.10's stock rear, longtubes/true duals, stock 26# injectors, all bolt-ons etc..
I expected the car to put down about 400-415rwhp on a dynojet and I put a nice street tune in the car before we started. 27.5 degrees of timing, no knock retard. The car hasnt been driven since all the modifications but it put down a max of like 310 rwhp with the converter locked. I expected 380-390 with it being a mustang dyno but those results seems pretty unbelievably low.
We made a full 1/4 mile run with the eddy current set to 3500lb race weight and chose the aerodynamic file for a 00 camaro.
Car ran a 11.55 @ 113 with a 1.50 60ft. Launching the car on the dyno is pretty cool, it dead hooks with no effort.
I logged the run and attached the hptuner file to this
05-26-2008, 11:56 PM
#4
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Fixed the o2 just after....one of my guys crossed the wires when they extended the o2 wiring and it wasnt reading right...
Ran the car friday night and it went 11.8 @ 118 n/a (only made one n/a pass)
Ran the car friday night and it went 11.8 @ 118 n/a (only made one n/a pass)
