HEI Super Coils?
jzak
Old Time Jeeper
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- Location
- Pittsboro, NC
- Vehicle(s)
- 1981 CJ5/258 4.2L I6, Tremec T-176 4-speed, Dana 300, Power Steering, Howell Throttle Body Injection System, Warn Locking Hubs, Warn Rock Crawler front/rear bumper with Tire Swing Carrier, Full Roll Cage, Pro Comp ES9000 shocks
Just wanted to get some opinions on super coils. Does it really help with performance and mpg, or is it just snake oil?
Thanks!
Thanks!