Adding a bit more,, use a wide band o2 reader to get your A/F ratios correct & much faster to tune than trial & error & track testing.
It takes the guess work out of tuning. Like reading plugs, etc.
I use a LM1 for tuning my Syclone
http://www.trackdogracing.com/website/fuel_timing/LM1.htm

MBHD


12 port SDS EFI