Because the FA24 is naturally aspirated, bolt on gains from an intake and header are modest compared to a turbocharged platform. Headers, a GR intake, and flex fuel with a LIMIT+1 x Boosted Performance Tuning GR86 Ecutek tune are the most effective naturally aspirated combination.

For a meaningfully larger power gain, a turbo kit or supercharger kit is the path most owners take, since forced induction is where the biggest numbers on this engine come from.

If you want a meaningful power increase beyond bolt ons, yes. HKS, Harrop, and Jackson Racing offer forced induction kits engineered for the FA24 that are designed and tested as a complete system. Forced induction is a bigger investment than exhaust and intake work, but it is the realistic path to a large power gain on a naturally aspirated boxer engine.

Supporting mods such as fueling, cooling, and in some cases the clutch should be budgeted for alongside the kit itself.

Under the Magnuson-Moss Warranty Act, a dealer cannot void an entire factory warranty simply because aftermarket parts are installed. A specific claim can still be denied if a modification is determined to have caused the failure, and ECU changes are detectable. Warranty decisions are made by Toyota and its dealers, not by LIMIT+1.

Yes. Tell us your vehicle, your goals, and what is already installed, and we will put together a parts list that works as a system instead of a pile of individual upgrades. Order matters as much as part selection, and sequencing a build correctly avoids buying the same part twice. Contact us before you order if you want a second opinion on a plan.