Features two advance curve families that are adjustable to accommodate stock and modified enginesSelectable multi-spark mode for quick starting and smooth cruisingFour rotary switches for timing adjustments, single/dual ignition mode and rpm limit (100-rpm steps)Coil outputs protected against short circuitsRequires coils with a minimum of 3 ohms resistance and low resistance spiral-core-type plug wiresRequires timing rotor OEM #32402-83 or PART #2101-0234Uses the tachometer wire for the PC link and comes with a connectorOptional USB interface and software available for programming custom curves (programs available on web site www.daytona-twintec.com/index.html)Made in the U.S.A.NOTE: Standard models are not legal for sale or use on pollution-controlled vehicles.NOTE: California A.R.B. E.O. No. D-641-1.