Some folks swear that they get 1 or 2 hp out of it. Personally, I can't see it. You're already getting good spark for the stock compression. What I think they're mainly for is F/I. You need more spark when you run several lbs of boost.
__________________ 2005 V6 Mustang coupe. Automatic. Black with Charcoal Interior
Mods: JLT CAI, Bamachips 91 race tune, single Mustang V8 muffler, Mustang V8 swaybars
Looks: smoke front turn signals, sequential taillights, 14" shorty antenna, MRT rear window louvers and a little chrome for the interior 2000 C5 Corvette convertible, Torch Red with Black Interior. Full of options, Corsa exhaust 1990 Ford Bronco 351ci engine- it runs. |