Well, I guess I'll just whore my own thread. I got another email back from John, the RPM retard can indeed be disabled easily:
Quote:
David:
> I really don't have a
> need for this feature, is there a way to disable it?
>
>> Below 2psi, no RPM retard.
Never let the unit see more than 2 psi. Disconnecting the hose at the back
of the unit will force it to see a constant 0psi.
The knock detector is turned off with more than 5 inches of vacuum, so
simply disconnecting the boost line from the unit may cause false detections
on decel and light loads, due to piston slap.
You could put a "missing link" check valve on the boost line to the unit, so it sees vacuum to turn the detector on and off, but never sees boost.
John
|
I'm going to get some sort of check valve for the vacuum line to the unit.
I went ahead and set switches 3 and 4 down for now, and it runs so much better. I have now both the J&S and the wideband back in the car. The wideband is semi permanently installed now, with the sensor in the stock primary O2 position and the stock ECU being fed the narrowband simulator from the wideband controller (Tech Edge v1.5). A/F looks great throughout the RPM and throttle ranges, and the J&S is not retarding timing for knock. I'm running 9 psi. Despite running the stock exhaust and header (along with Random Tech cat) and my latest intake setup (I'll post pics later), the car feels to me just as strong as it did with my ridiculously loud 2.5" custom exhaust.