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Hello folks, I posted this to ford forums but didn't get much response so I figured I'd try here as many of you probably have similiar setups. I have a BA XR6T that used to have a BTR auto that I killed with 12+ PSI and liquid LPG injection. I fixed that by putting a BF turbo T56 and extreme clutch with lightened flywheel and a manual tune. It goes great however there is one small issue. When I put the clutch in to stop at the lights, the revs drop way too far.. down to 400 before slowly climbing back up to 700 or so. Occasionally it will stall. When I put the pedal box in I didn't get around to putting a clutch switch on.. I was wondering if the switch does anything other than the cruise control. I mean to say does it do anything to tell the PCM that the car has the clutch in any reason other than cruise control? Also I read somewhere that the PCM needs to know that the T56 is in gear or in neutral.. when I put the box in, I wired up the reverse lights and connected up the wires where the neutral safety switch so it would turn over... didn't hook anything up that would tell it I was in gear or not though. The question is.. should I have? I know that having a lighter flywheel will make it drop revs faster but it shouldn't be like this surely. Auto boxes usually hold revs so I know this is adjustable in the tune, but where? is there a name for it in tuning schemes? Holding revs after instant disengagement? I'd really like to adjust this thing to hold revs briefly before dropping down slowly to 750 or thereabouts... Of course it's possible that I naffed up setting up the pedal box and should have hooked up the clutch sensor and/or a neural switch to the PCM so it would do this itself. The manual tune on the PCM now is based on HAANFG4. I should add a couple of things, the revs dropoff happens in both Petrol and LPG, and the ignition system in my car includes Brisk racing silver plugs, recent version WeaponX 80k coils (dwell turned to match) and a Herrod JMS voltage booster so I can run big gaps for a good idle and still have no spark blowout up high. Any thoughts would be very much appreciated. cheers Frank