> I also have an AFR meter (which i would highly recommend), so I can tune it > on the fly. Even without the AFR meter the pot makes on-the-fly tuning so > much easier. It's a lot quicker to figure out whats going on by twiddling > the knob and doing another pull in 3rd gear on the freeway instead of > having to stop the car, futz with dip switches, and then get back up to > speed and try the whole thing again.
That's a good point... Now that you mention it, I remember seeing, somewhere, a dash-mounted thingy with "+" and "-" buttons, and a little odometer-like display to show the actual resistance values. That would sound like the best of both worlds, digital precision plus the flexibility of a pot. Anyone have any idea where that comes from? > I set the module once, and the only time I really change it is when I use a > different kind of gas.. and it does make a difference. Consistently with > chevron gas I could hit just below full rich on the afr meter (where the > car pulled best) at about 3-4k ohms. With other cheaper kinds of gas it Hmmm, I have it set to around 2k, and my a/f meter shows .8V (8 LEDs) at WOT. Do you run yours even richer? On another note, for me, enrichment seems to make the most difference (as measured by the seat-of-the-pants method, and a LED in the dash indicating WOT) in the mid range (3500-5500 rpm) rather than the top end. It still pulls hard all the way to 7200, but enrichment doesn't give that extra "kick" above 5500. And I've always heard it said that it's supposed to improve the top end. What's people's experience here? (I suppose the euro vs. US intake & cam could account for some of the difference -- I have a 1.8 PL with 50mm intake, and an oversized airbox that the dealers can never match up properly -- some special edition weirdness from VW). Cheers, Oleg
