ok so help me out i just got my car going agian and i havent done anything to it and with everything hooked up and tuned my car pulled great to 9500rpms but now it falls on its face at 8000rpms i mean it just straight up drops all power and i havent changed a thing to my settings.... any ideas would be great.... Thanks

 

RX7? Stock PFC maps? The Rev Limiter is set at 8100 and the last RPM breakpoint for the maps is 8000.

You should check your rev limiter and maps. Maybe you have initialized your PFC accidently?

 

The PFC might have goten reset.

So, what are the specs on your motor?

1/2 or full bridge port?

I sure hope that you got some good bearings, properly balanced E-shaft. a good size A/R on the hot side of your turbo, lots of fuel ect. because i see no reason what so ever for you to be running to 9,500. I'm willing to bet that your not even making power up there, but I cant say untill i know your exact setup.

Please fill me in im interested in whats done to your car.

 

ha-ha no I didn’t initialize the PFC but that is a good idea and I am not running stock maps and the motor is fully built as in balanced e shaft, clearanced rotors, new Adkins bearings, it has a HUGE street port, T60-1 turbo and so on and so forth its got a lot it handles it I have ran this setup for a longtime now, but I’m still learning and so I’m just looking for some ideas from people.... I know how to build the motors i'm just not totally pro at tuning them but I will be, so any ideas??? It was fully tuned when the motor came out and now after I put the exacts same motor back in, (nothing changed)..., it falls on its face at 8000rpms..... I know even with stock ports I pulled to 8500rpms...

 

o and i made ALOT of power up there it actually pulled until the top of the FC's redline at 9990, but i bumped it down to 9500, and when i say it falls on its face i mean me going from the ushual 400+ hp to like 100 hp in a matter of a finger snap...

 

Could be many things, if it was fuel cut you should be able to tell given your experience with the 7. If it still runs and makes 100 hp then perhaps an intake tube is collapsing.

 

na i have the pettit cool charge 3 intercooler so all my pipes are metal and im stumped i cant think of a thing, but good ideas so far guys, keep up the good work. what esle you have for ideas?

 

So you say the intake pipe for the turbo is metal because you have a pettit IC ... ?

Anyway, it's either an ignition, fuel, or air restriction. AFR gage, fuel pressure gage, and better yet some dataloggin will reveal alot. Perhaps it's running so rich it just cannot spark the mix with some partial fouling of the plugs. Check everything in the ignition system again and put a wideband on it. Try wrapping it to 8+k rpm without going into boost and see if it repeats. Have someone look for black smoke out the tailpipe when the condition occurs. Keep us up to date with your results.

 

yes i have all hard charge pipes just look in the pictures and i know exactly what my car is doing at every moment, i have it all wideband.... datalogit.... the works i run the laptop at all times.... but lets get some real ideas insted of the whole "do you have a colapsed charge line... but now that we have good pictures lets keep up the good work people! Thank you for the help so far.

 

Post up a datalog of it falling on it's face, give us something to think about. Tough to guess what it might be without some data. I'm curious if noone else is.

BTW, with all that instrumentation a cause for your symptom should be near if not apparent. Paralysis by analysis? Too much data? Let's see it.

Let us know what the results are of the tests I suggested.