i jsut wondered if you others had info.

at w.o.t. here are is my data on the pulley tune, max rich, max timing retard

3437 rpm
3.93 maf v
16 deg sparkadv
.88 02s11
.89 o2s21

4000 rpm
4.2 maf v
18 deg sparkadv
.87 o2s11
.87 o2s21

4330 rpm
4.4 maf v
18 deg sparkadv
.87 o2s11
.87 o2s21

4820 rpm
4.5 maf v
18 deg sparkadv
.88 o2s11
.8802s21


does this seem about right?


what about everyone elses readings

 

Mine with the performance tune (no pulley)

17 deg Sparkadv
.88 o2

Edit: This was done with the stock Diablo settings. I haven't modified the tune yet.

 

thats odd that i am running near the same o2 voltage and a degree more timing than you for a setup for more boost.

 

I ran a datalog at lunch today-- @ app. 48degF., and here is some of the results...for comparison.

00 L, +4 Pulley, JLP RamAir & ThunderPipe , Denso 22's, FTVB, SilverBullet catback

Standard Predator Pulley Tune @/Max retard, Max rich

3074 rpm 4.26v.MAF 18 deg. Sprk.Adv.
3508 " 4.36v. 19deg.
3754 " 4.50v. 20 deg.
4166 " 4.73v. 21 deg.
4612 " 4.91v. 20 deg.


Should I go with a 90 mm MAF since the voltage @ 4612 is already getting close to the max (5.0v correct?)

Any comments at all about timing?

 

ttt

 

I went out and played with the Predator this A.M.
Not sure what you guys mean by Max Rich/Max Timing Retard,but here's what I saw...
60*f
4054 RPM
82 IAT
389.31Gm/s MAF
4.16 MAFv
15* ADV


4883 RPM
84 IAT
479.67Gm/s MAF
4.85 MAFv
18* ADV


5158RPM
86 IAT
483.77Gm/s MAF
4.93 MAFv
18* ADV


this is with the STD Pulley tune 91 Octane,No detonation
Dyno #'s were 441RWHP 540RWTQ

 

When you get into the options screen (sorry I don't have my Predator here right now for the right terminology) you can set Fuel Base to Rich or Lean, and Spark Advance to Advance or Retard. I had my timing set to full Retard and was running 18, on full advance it was hitting 22 @ WOT. I wonder if lower temperature here (40--50 deg) was letting my computer advance the 3 degrees additional to what yours is saying!!!
I had my fuel on full rich to see if it would take care of the detonation I was hearing......Maybe I should just move South.

 

The pulley tune has to much timing for the street. I would sugest gutting your tune updated to about 15 to 17 max timing.
Mine ran like a scalded ape strait from Diablo but i did not want to go boom the first time I get some questonable fuel or it is to cold.
I have a 19 degree tune for the track and i aldd a little 100 octane for saftey.

 

I probably need to talk with a Tuner.I've got concerns about my Dyno #'s with the Predator anyway.
The Dyno Tech that installed the Predator for me told me that my #'s were very strong and to expect 20% bigger #'s from a Dynojet Dyno.
It's hard to judge by SOTP feel but if 20% is not the number,i've actaully lost power with the Predator as opposed to my Diablo Delta chip.