Originally Posted by travlee
intake, exhaust, headers etc etc
"Bolt-ons": essentially any performance parts that do not require engine tear-down to install/upgrade - unlike cams, pistons, dry sump, etc. and require only removing original part and installing new part to the external of the engine.
With that said, is "tuning" considered a "bolt-on" or maybe a "plug-in"? Laff...