jed344
Supporting VIP
- 1,210
- 315
- Jan 10, 2008
-
Waterville,
Iowa
I have been running into a strange issue on my new build. I have been tuning dsm's and with e85 for at least 5 years and am no stranger to them. The car has a 1/2 filled split thrust 7 bolt built loose, 10:1 pistons, cams are BC 288s degreed to motor. 62mm hx40 in .82AR housing. The e85 tested at 87%, currently on 20psi and only 12 deg of timing I seem to be picking up .4-1.5 counts of knock retard 5500-6500rpm. It seems no matter what I do it shows up, could it be the 1/2 filled block is cause the knock sensor to pick up motor noise? I have a new knock sensor on the way and new plugs so might try to disable knock sensor and read the plugs after a pull too see. Just seems strange as I have tuned cars with much much more timing without issues on e85. 7,000 rpm + seems to not pick up any knock and the car really feels like it wants the timing.