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On Fri, 2005-08-26 at 03:20, Craig Webb wrote: > Thanks for the feedback guys. I'll try and answer you all in one go: > When I researched this engine, the common answer seemed to be "All you need > to do is up the fuel pressure to 30-32psi". My experience with this engine > suggests that this would be seriously lean at speed (say 17-18 AFR). The > engine does run quite nicely now. Idles well, pulls well and behaves > nicely. Occasionally get a bit of 'bucking' when driving slowly in first or > second. MPS seems to cope ok. I'll post up the engine specs shortly, but > its got a mild cam in it (CB Cheater - slightly more lift and duration, but > not as much as say an engle W100) and an ISP over the top exhaust. > I think your cam is probably what the difference is. When you asked about the 1776, you didn't say that you were putting in a bigger cam. The valve overlap at idle is what is messing with the MPS. > > On Aug 25, 2005, at 20.07, Jim Adney wrote: > > >People have occasionally added a resistor in series with the cyl head temp > >sensor and the ECU, but that's not the sensor that he wants to change here. > >He's talking about the pressure sensor, where we can't just add a resistor > >in > >series. > > Yeah, a resistor here would just richen up across the board. Not what I'm > after. > The temps sensors resistance at various temperatures is on my web site in the FI manual section. You might want to plot that out and see it there is a clue there. -- Russ Wolfe '71 FB AT '66 FB MT '64 T34 (not running) '65 T1 (not running) '05 KIA Sorento SUV russw@classicvw.org http://www.classicvw.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~