The MySpeedParts garage

Guides, builds and race-day know-how.

Buying guides, maintenance tips, and racing know-how from the MySpeedParts team.

back pressure

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exhaust

Back Pressure vs Through-Flow (Straight-Through) Exhaust: Which Is Actually Best?

"No back pressure = more power" is only half true. Here's how back pressure and scavenging actually work in a small-capacity engine, and when a chambered exhaust beats a straight-through pipe.

5 Sept 2026 · 5 min read