My first SSR dyno results (they suck! )
The dyno I made these pulls on is a Dyno Dynamics. The first time I used this place almost 2 years ago, John@floorit chatted with the shop owner and went over the difference between diesel and gasser on this dyno. He didn't have any of the load or other numbers anymore (acceleration rate number?) .So went with his his typical numbers. This shop supposedly had access to a dyno jet and a set of different cars for a while and dynoed the cars on the dynojet and his new dyno to set the correction factors to be as close as possible. Plus, as you may recall from my earlier post that there was no real tach pickup, wheel speed to rpm matching. I did not get a wheel speed print out (d'oh!)
The above plus the lack of low end loading was for the most part a recipe for failure out of the gate.
I will call on Monday to see if they can send me an export of excel data for my runs with all the data. Make my own graphs!
I've scheduled at least an hour with a dynojet this afternoon to compare a few of the data. Maybe a little tuning.
Injector data:
180MPa, 2800Us, 370MM3
160MPa, 1700uS, 205MM3
The low RPM and big sticks:
I'm with you if you go from 10psi to WOT and it's a smoke show, but the way I had it tuned on the street after 10psi, it comes up so fast, it's just a puff on the street and away the truck goes. LL settings 12 on timing, 21 on duration.
How do the big twin'ed trucks handle this? At 10psi, I have the same 10psi. single 66 or huge twins. Wouldn't the LL tuning to light the changers be similar?
I think the SSR still comes down to how you roll the throttle in. Just like the TNT and TNT/R. If this was a MAP based tune until boost is outa the 45psi range of the sensor.....
As for the stock cam. when the numbers were showing peek at 3000.... But as I increased the low end fueling we got less power. as I lowered low end fueling, I got less power.
Boost:
I've never been on a dyno where boost was exactly that as on the street, always down 5psi. the one exception was a bad day on a dynojet years ago when boost was down 25psi or and made a similar graph as the one I got last night... hmm.
I think I covered all the points I needed. if not, let me know. I'm all about open info with these things.
Link to all graphs:
Picasa Web Albums - Jason - SSR Dyno Sess...
First and best pull:
SSR: 12/20/21 30/30/26 - 5th gear
TNTR #9 timing 2. Single 64, single stage 4 cp3 (when I had it at the time) and smaller injectors, 85% over
Was defiantly loaded differently.
Setting notes:
My plan was to try to use that first base line as a reference since it was the best pull. The others seem to be consistent but lower, heat soak? most likly.
Gear TQ LLT LLR LLD HHT HHR HHD WHP WTQ Pull # Boost Drive
5 1 12 20 21 30 30 26 656 1140 1 and 2 50 60
5 1 18 20 26 32 30 30 646 1086 3 50 60
5 1 15 20 18 34 30 26 658 1094 4 50 60
5 1 12 20 19 28 30 24 5 50 60
5 1 12 20 21 30 30 26 6 50 60
6 1 12 20 21 30 30 26 7 53 60
6 1 10 20 21 28 30 26 8 10-psi and 9 20psi 53 60
6 2 12 20 21 28 30 26 10 11 ? 53 60
6 1 12 20 22 26 30 20 12 20psi and 13 10 psi 53 60
6 1 12 20 21 30 30 18 14 and 15 53 60
(hint, if you quote my post to reply to it, the above info is spaced correctly to read easier)
I'll detail a few other graphs later.