M3Turboca,
I was seeing 5 to 7deg of Knock retard.
I just finished the Install of my PAC controller, (this thing is just awsome) I did some tuning runs with it for my Initial setup.
One thing I forgot in my earlier post is that after my runs my Intake Plenum was much cooler than it was...
Ok, I did some testing on my Supercharged Z28 last night and this morning.
I had my combo tuned well with the DIY WB O2 @ 11.5 afr
using a 70/30 mix of water/meth. (No Knock retard)
I drained my tank and whent with 100% Methanol with cap full
of lube and no other changes.
I data...
Not shure where to post this so here it goes.
I was woundering what AFR to run at WOT with a 50% water/ ALKY injection mixture.
It seems to richen the mixture at the WB02.
this is a supercharged 355 smallblock in my Camaro.
9.5 CR 7psi boost.
Normally a 12.5 to 1 for Gasoline.
Its...
More results: (DATA)
Well, this is Interesting,
Aparently adjusting the fuel pressure up causes the computer to lean out the LT fuel trim @ normal mid throttle driving to achive a 14.7 air fuel ratio.
I belive the computer uses this info to calculate the WOT fueling.
I notice that the LT...
Recorded a lot of data yesterday and ended up setting the AFPR @ 61psi.
Results:
2deg to 4deg 0f knock retard
O2's @ .924
13. psi of boost
Feels stronger and the pulls are smoother
next I set the fuel pressure back to stock 52psi
Results:
8deg to 11deg of knock retard
O2's @ 860's...
I also removed the screen in the MAF/TB.
Yes the boost is a bit high, I agree with the Exhaust need.
I don't know what exhaust to go with, I'd like good flow but it must sound good or quite.
What fuel pressure is everybody running at?
My mods are as follows:
3.4 pulley
SLP Cold air box and filter
Exhaust u-chanel removed
2 steps colder spark plugs
180deg stat
AFPR set at 56psi
At WOT
I see 12.0 to 13.0 psi of boost, and 5 to 7deg of knock retard
O2's @ 900's