This car was previously tuned by someone with bad results.
Original tooned tune: 01 luettu autosta.hpt
This is the setup now:
- 6.1 LS engine with 10.5:1 compression ratio
- BTR Stage 2 supercharged cam
- Procharger (not very big) with 8-belt rib & air-water IC
- boost-referenced fuel system
- 1350 cc fuel injectors (at 44 psi or so, perhaps Bosch-based)
- E85 fuel
- 2 bar COS
- headers
I tried to run it at closed loop, but trims just go crazy during normal driving. Only at idle it seems to be as it should.
So I went with open loop and used car's own wideband to get 2 Bar VE somewhere where it should be. But, as soon as I force Closed Loop with Scanner Controls, STFT just goes from -25 to +25 and Wideband confirms that.
Open loop tune (in the end I'm forcing Closed Loop: 502 ve idlealueen.hpt
Open loop log with closed loop activated just at the end: 35 first open loop then activate lambdA.hpl
I think it's something in the tune that makes both lambdas go crazy.
We did a smoke test in the intake side but no leaks at least there. Lambdas are two years old.