90 TSI FWD
15+ Year Contributor
- 264
- 11
- Oct 26, 2004
-
Columbus,
Mississippi
Car is a 1991 tsi awd. Main mods are: K&N, hard intake and IC piping w/ fmic, stock turbo spiking to 20psi and falling to 16, act2600, 4-bolt rear, 3" cutout after the downpipe [no cat], evoVIII 560cc injectors, and SAFC2 w/ logger.. thats it i think. pretty short list now that i think of it..
Anyway, I felt like tuning it today to get kid of the knock and finally did, but for some reason, the duty cycle is pretty darn high, dont you think? Why are they maxing out already, especially in the higher RPMs after the boost has dropped down to 16.
Now that I got rid of knock, how should I go about tuning for power? I decided to log the o2 reading and get somewhat of a clue as to where it runs rich/lean, but I dont really get the voltage.
When I went out to tune, the weather was 65 degrees, and when I came back, it was 70 outside. Will these tunes be thrown off once the weather is dropped like 30 degrees colder? would colder weather make the car richer or leaner?
1st run
2nd run
3rd run
Final corrections on the safc read [RPM/CORRECTION]:
Lo= 800/-29 1600/-29 2200/-22 2800/-20 3400/-20 4000/-20 4600/-20 5200/-20 5800/-20 6400/-20 7000/-20 7600/-20
Hi= 800/-29 1600/-29 2200/-19 2800/-18 3400/-18 4000/-20 4600/-19 5200/-19 5800/-19 6400/-17 7000/-20 7600/-20
this is for open exhaust.. closed is completely different because it's for stock boost
Thanks,
Chad
Anyway, I felt like tuning it today to get kid of the knock and finally did, but for some reason, the duty cycle is pretty darn high, dont you think? Why are they maxing out already, especially in the higher RPMs after the boost has dropped down to 16.
Now that I got rid of knock, how should I go about tuning for power? I decided to log the o2 reading and get somewhat of a clue as to where it runs rich/lean, but I dont really get the voltage.
When I went out to tune, the weather was 65 degrees, and when I came back, it was 70 outside. Will these tunes be thrown off once the weather is dropped like 30 degrees colder? would colder weather make the car richer or leaner?
1st run
2nd run
3rd run
Final corrections on the safc read [RPM/CORRECTION]:
Lo= 800/-29 1600/-29 2200/-22 2800/-20 3400/-20 4000/-20 4600/-20 5200/-20 5800/-20 6400/-20 7000/-20 7600/-20
Hi= 800/-29 1600/-29 2200/-19 2800/-18 3400/-18 4000/-20 4600/-19 5200/-19 5800/-19 6400/-17 7000/-20 7600/-20
this is for open exhaust.. closed is completely different because it's for stock boost
Thanks,
Chad