2010-07-20-21, Dyno at PBZ in Uppsala
After only one and a half run with the new engine, we really fealt we were out of controle.
At first we changed to a new Autronic SM4 ECU, a new M&W Ignition system,
and now we had a belt driven fuel pump and a new regulator...
...so I guess it was dyno-time instead of killing more engines on the track.
I called Arash at PBZ who is an old friend of mine for an apointment.
PBZ has a Swedish developed system called Rototest, that bolts on to the drivetrain of the car.
In Sundsvall we lost all belts and the solution of that was an extra guide on the inner sprocket.
The purpose was not to check if we could reach to the limit of the dyno,
but to get the engine run safe and well.
Both fuel and ignition maps were looked over in detail and corrected.
As we adjusted practicly everything and raised boost we ended up getting 781whp at 7750rpm.
My old boost controler gave us some problems as it was trying to controle the boost too acurate,
causing the dyno to overcompensate and giving us quite messy readings.
We replaced it and used the autronic built in boost controle instead.
We could not reach more than 41psi boost due to the base boost spring in the wastegate.
The turbo chargers poor condition is also a possible cause. I have used it since 2006,
and blown numerous engines with it.
The dyno graph might look aufuly steep giving me only a couple of hundred rpm's to use,
but I were confident it wouldnt be worse than before, and I were proven right.
Infact the car was more easy to drive after the dyno than ever before.
We took some 10 degrees off at the top in the ignition table, and gave it quite alot moore fuel,
but still it deliveres the same power and has less fuel consumption than before.
Read more about the results of the dyno in next update from Borlange Street Open.
