Try adding a diode inline with your trigger wire to see if it helps at all. Can be sourced at any electronics shop even radio shack for very cheap.
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00 Jet Black 323i 5MT - Fuel Saver
02 Carbon Black M3 6MT - Fun Car
456whp/312wtq @ 8psi, No #'s yet at 9psi
4.10 / Headers / ESS VT2-550+