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Re: [T3] FI Tuning Help


On 18 Jan 2004 at 16:51, Tony Rongey wrote:

> Here are the specifics:  '69 FI AT; All stock except for 87mm cylinders; 13.4
> volts at the engine; 115 - 125 psi compression; timed at 0deg; 4 new
> injectors; new plugs; new wires; new cap and rotor; fuel pressure 30psi. 

If 13.4V is all you get at any RPM, then replace the voltage regulator. This 
should be 14.1-14.4V. Low voltage makes the FI run rich and it will run awful 
at 13.4V.

You won't get much life out of those 87mm cylinders. The wall is too thin and 
they warp when they warm up. I don't know, but this might be part of your 
problem already.

> It idles around 1200 with the screw all the way down. I have decent
> acceleration up to about 30mph, but after that it seems weak and tops out
> around 55. 

Check for hoses off or loose. Make sure the pressure sensor hose is snugly 
pushed on at BOTH ends; same for the hose to the vacuum modulator on the AT.

-- 
Jim Adney
jadney@vwtype3.org
Madison, WI 53711-3054
USA

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