SpeedFactory S2000 Sidewinder Turbo Manifold for F20C F22C

SpeedFactory S2000 Sidewinder Turbo Manifold

Most S2000 turbo manifolds make you choose: a log that spools fast but chokes up top, or a forward-facing ram horn that makes power after you relocate half the exhaust side of the engine bay. The SpeedFactory Sidewinder splits the difference for your AP1 or AP2. It hangs the turbo low and out of the way, fits all year S2000s without relocating surrounding components, and it's built to feed medium and large frame turbos, not just the small stuff.

What It Is and Why It Works

This is a tubular, TIG welded turbo manifold for the F20C and F22C1, built from 1.5 inch Schedule 40 stainless steel and back purged during welding. Back purging matters on stainless: it keeps the inside of the weld from oxidizing and crystallizing, which is where cracks start on manifolds that live at exhaust temperature. The cylinder head, wastegate, and turbine inlet flanges are CNC machined from half inch 1018 steel plate with the mating surfaces machined flat, so the manifold seals without fighting warped flanges.

SpeedFactory designed this manifold around medium to large frame turbos, and that's the honest use case. If you're building an S2000 turbo kit around something in the GT30 to GT35 class or a comparable Precision unit, the runner design keeps spool quick while still flowing enough to carry power to the top of the F20C's rev range, which is the whole point of turbocharging an engine that pulls to 8,900 RPM. Road race and drag builds are both in scope. The stock bottom end handles roughly 400whp with a good tune, and this manifold has headroom well past the point where you'd be building the motor.

The wastegate provision is a single 44/46mm V-band flange, which covers the common external gates from Turbosmart, TiAL, and Precision in that size range. Your choice comes down to the turbine inlet: T3 or T4 open, depending on the exhaust housing you're running.

Specs

Available Options

Fitment

Fits without relocating surrounding components. One caveat if you're keeping air conditioning: the A/C lines need to be bent slightly for clearance, and SpeedFactory recommends thermal tape on the lines that run near the manifold runners. That's a far cry from the battery, fusebox, and oil filter gymnastics some forward-facing manifolds demand.

What to Know Before You Buy

Do not heat wrap this manifold. SpeedFactory's warranty covers welding defects only, and it is voided outright on manifolds that have been heat wrapped or run with an improper downpipe or dump tube. Wrap traps heat in the tubing and cracks manifolds, which is exactly why the exclusion exists. If underhood temps are a concern, ceramic coating is the route that doesn't void anything, but confirm your plans with us or SpeedFactory before committing.

Support the turbo. A medium or large frame turbo hanging off any tubular manifold needs a properly built downpipe that doesn't load the manifold, and the dump tube from the wastegate needs to be routed correctly, not just aimed at the ground. SpeedFactory will ask for photos of your setup on any warranty claim, and an unsupported turbo or a bad dump tube is the fastest way to a denied claim and a cracked collector.

Size your wastegate honestly. The single 44/46mm V-band gate holds boost fine on most setups in this manifold's range, but if you're running a big turbo with a tight exhaust housing and chasing low boost targets, boost creep is the classic sidewinder complaint. Talk to us about your turbo and boost goals before ordering if you're on the fence.

Plan your timeline. These manifolds are built to order by SpeedFactory and typically take several weeks to ship, sometimes more than a month depending on their fabrication queue. Order the manifold early in the build, not the week before the dyno appointment. While you're waiting, sort the rest of the system: gate, downpipe, oil feed and drain, and engine management, because an F20C under boost needs a proper tune before it ever sees full throttle.