Originally Posted by 2011hemigc4me
Interesting! I would like to learn more about how coils swap can yield these HP these gains.
Easy, you just pull a number out of thin air, or other places, and make the claim.
'shop up a dyno graph and you're in business.
Add those coils, different intake, different filter, different catalyst, different exhaust, and you'd be making so many horsepower that NHTSA would ban your vehicle.