ok so I have tried a few things and now I am need of some help.

ok I am dyno tuning my car and here is the problem I have. it seems to be running good but as I climb past 5000 rpms and to be exact it is like 5200 rpms my car completely shuts down. It is like it hit a speed limiter or rev limiter and then it comes back on after it drops a few rpms. but the psi is only at ten and the fuel is good. I can not get it to go over 5200 rpms. I checked all the settings and the rpm limiter is set a 7000 and the speed is set at 254mph. I also have the msd dis-2 with boost retard and the coil packs. but I have not been able to open it up cause I can't find the right driver for it. but I can look at the default settings and it is set to 9000 rpms. let me know if you got any ideas.

thanks guys this has really driven me crazy so any input would greatley be appreciated

What is your injector duty cycle at that 5200 RPM? What gear are you in and what MPH?





PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO

I can send you the data log?

I was in fourth gear and about 99mph

More info. AFR's, timing, fuel pressure, what injectors etc..



FU Tuning

how can I post my data log?

750cc injectors, 11.0 afr, boost 10psi, spark is 14.0

The dyno shows me getting plenty of fuel and I didn't loose boost.

Are you logging your injector duty cycle? Do you know what your fuel pressure is? Stock fuel pump?

You can email your log to me at JMHZ2497@comcast.net



FU Tuning

Got your email. I sent you one back with a config file to use. I do not think you are recording enough things to find out the issue. No IDC, or AFR's.



FU Tuning