Honda16hb

the pm6 has this so values can't be entered past 7400 rpm, does the pr4 also have this problem? how is it that my zdyne modified pm6 allows me to rev all the way to 9500 rpm? I was told that the ecu just connects the dots or something like that to get values past 7400, but if it does this for rpm why can it not do it for boost, meaning stock ecus could handle boost without modification?

warric_k

would you really want your ecu connecting the dots for boost and rpm values over 7400? if you're revving that high and your boost is still efficient, I would think that your motor has some work into it, and I am sure you would want definite control over how much fuel and what kind of ignition is going on. just leaving it for the computer to guess would scare the **** out of me.

but I don't know if it can be done or not... just the thought of it scares me.

Honda16hb

that's why I'm asking if the pr4 has the same problem, I want to make sure everything is good, not hope the ecu can continue the curve effectively.

Chris Harris

It's all in how the information the ECU pulls from is coded. If ZDYNE's ROM coding allows for higher RPM and higher BOOST (which it does) then the ECU knows where to pull values from.

Right now, the PGMFI ROM doesnt have that feature available to the public...

TurboEF9

Zdyne doesn't allow tuning above 7400 RPMs.

Honda16hb

does the pr4 allow tuning above 7400?

TurboEF9

No.

PR3/PW0 only (natively). A wild rewrite of the interpolation routine would have to happen for addressing cells about 0xFF (255).

Honda16hb

alright, I was trying to decide between pm6 and pr4, the pm6 wins, who has one for sale?