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In a message dated 5/24/06 8:50:26 PM Eastern Daylight Time, topnotch@nycap.rr.com writes: << Yea be interesting to see. T4 injection on a T3 will give you the wrong mixture but how wrong? At least the Synthetic oil Rant wont get going again.... Good oil Good Gas.... what brand pistons were you using? Were they new? Was the ring end gap checked? Hmmmmm..... >> Well according to Ray, it might be as high as 5% rich, but with the t-3 injectors it should be less. he suggested I first try dropping the fuel pressure 1-2 psi, and if that didn't take care of it, turning the center screw of the MPS out1/5th of a turn (outward leans the mixture, while inward richens it up) and then road test it. It was running pretty damn good though, actually better than it had with the carbs, with excellent throttle response. I had asked him about using the CO dial on the brain, but he thought that was for idle only, while the MPS is for both idle and off idle. As for pistons, I they were OE Kolbelschmit, and were used with their matching cylinders ( I try to keep them together like that), although they were used, the car didn't smoke except on start up after sitting overnight (valve guides?). The FI didn't change that either, as it smoked on start up from the get go. Heck, my Notch does that, and I don't know how many miles are on it. :O Bob 65 Notch S w/ Sunroof and IRS (Krusty) 71 Square, now a 2 seat Roadster, pics can be seen at; http://volksrods.com/forums/index.php?showtopic=2977 and now has a dead T-3 with D-jet FI engine. : ( ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~