HDi Dyno Results BIBLE

[darrenjlobb]

I took a look at the map I made you, and it should be good for 180 BHP and a s**t load of torque, I think you're either not boosting right (you want a good 25 PSI), or the fuel pump is maxing out and not getting the fuel in there.

Also, it's possible that the dyno operator isn't putting enough load on it in order to get the turbo to spool up properly at the point where peak torque is set. I did a run at 200% load the other day and it ended up making more power because it got the turbo going properly. Testing on a dyno isn't a great way of simulating the load of the car on the road in my opinion even though they use fourth gear. It's more like flooring it through second and you're through the revs before the turbo is at full boost. Just a thought if you go back there.

Nothing wrong with testing on dyno, but operator just needs to slow down the ramp speed...250-300rpm/sec I find to be a pretty good ramp rate for most blown applications..anything more and as you said, you wont make anything like max torque....