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<x-charset iso-8859-1>I have a Haltech O2 analyzer and a Haltech EFI set-up. The two do not communicate with one another. My F9A has its own O2 sensor and can run closed loop to whatever parameters I set it up for. The stand alone analyzer is very useful for tuning once you understand the scale and what makes your car run correctly., Its NOT 14.7! I use it as a tuning aid mainly on our drag car, its nice to know when warming up the tyres in the water box what the AF ratio is. Max power for our little acvws is usually around 12.7, stockers maybe 13.1. I also use it when tuning a new aftermarket EFI system even if they have an O2 sensor. It's my standard gauge and I know what "it likes". Now Toby, I only have to pull the aircleaner off my Notch for a plug change, # 1 is under it. If I had used any other heads than the Porsche 2.0L ones, that wouldn't be the case. > Plugs #1 and especially #3 are for all intents and purposes are impossible > to remove. Dropping the engine several inches simplifies the task. > > My baby spends more time in the garage under cover than on the road now so I > can go a very long time between plug changes ;) Just about as bad as me, but I have an excuse, I'm still building the car! > > If I had an after-market FI system the task would be greatly simplified... > $,$$$! >Toby hmmmm, not as expensive as some seem to think. Tom Hansen '69 Bug, 2161cc, 5spd, etc. '64 Notch, 2688cc, and one exhaust pipe from being driven! ------------------------------------------------------------------- Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe </x-charset>