ECU dyno testing

[Eric Waterman]

I don't have that ECU anymore.  Wade Jackson and I swapped ECUs at the
convention.  Mine *should* be a normal POP program.  I wanted to dyno my
wife's '97 since I didn't have any runs with the header and muffler.  I'm
going to try to dyno my car with the same ECUs in a few weeks.  The G20 ECU
fits right in place, no MILs, no idle problems.  No one that I know around
here has a JWT ECU in B14.  The '97 ECU and P10 ECU didn't show any
difference between 15 and 17 deg, but both did at 19 deg.  The runs I
filtered out were the first runs and the runs where the car was getting heat
soaked.  I didn't have a data logger with me to make sure water temps were
the same.  The gauge stayed in the middle, but we all know how much that can
mean.  Ever since I got the JWT ECU, I never really *felt* the power it
added.  others have stated that the car pulled more, but I never felt it.
The G20 ECU did show a gain, and now I have a stock ECU in my car, and it
feels almost the same as the G20.

Eric Waterman
1996 200SX SE-R
1997 200SX SE-R
1991 Sentra SE-R
> But thats your same JWT ECU isnt it?  The one that says S4 program on it?
> Im betting that is the problem since you dont have S4's on any of the
cars.
> I could be wrong tho.  Kinda weird that perticular ECU has always shown
> losses on the dyno.  I normaly would say the dyno, but you have used that
> one every time and enough time on it to not make a difference.  Cant say
> strap down differences since i know you just leave it up there while you
do
> it.  Only thing it can be is something up with that ECU.