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Hi All, I have a several questions about timing and my '72 Squareback. First of all, which is better for this car, static or dynamic timing? The section in Muir's book on static timing seems to make sense, but when I tried it, the car ran very poorly. However, that could have been my problem and not the procedure... Also, just to check, I should use the Bentley dynamic setting (5 btc) if I do it dynamically, right? (Muir shows 0 or 5 AFTC, depending on engine #) Secondly, Muir suggests advancing the timing 1 degree for every 1k ft above 4000 ft. Since I just moved to Denver at ~5600 ft, I should advance it about 1.6 degrees (like I can really measure that accurately!). But, he also suggests retarding the ignition a degree or two for using gas of lower than 91 octane. So, despite the difference in timing being beyond my ability to read and set it anyway, it seems that if I'm using low and medium grade gas, I should keep the timing where I had it when I was in Portland at sea level... Any input on this? Also, while I'm thinking about engine numbers, Muir shows V and U numbers for 72 and 73 Type 3's; however, Bentley says that August 71 on should have engine code with X. (Mine is X...) Does that have anything to do with the disparity between Muir and Bentley's timing settings? Thank you. Eric '72 Squareback FI, Manual transmission __________________________________________________ Do You Yahoo!? Find a job, post your resume. http://careers.yahoo.com ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/