Engine Builds
Custom rotary engine builds tailored for performance, from street rebuilds to 900hp+ E85 packages.
Quoted per build
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The workshop
Rotary engine builds and tuning, proven on the dyno
400 to 900+ hp on regular gas, E85 or flex fuel. Built and tuned in-house in Addison, IL. We reply to every request within 2 business days.
What we do
Five things we do, all on Mazda rotaries, all checked on the dyno before the keys go back.
Dyno Tuning (Pump / E85 / Flex)
Expert tuning for pump gas, E85 and flex fuel to unlock high horsepower safely.
Quoted per build
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Two-Step & Wastegate Setup
Launch control, anti-lag and wastegate configuration, set up and tested on the dyno.
Quoted per build
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Installs & Fabrication
Turbo kits, fuel systems, ECUs, intercooler piping and custom fabrication, installed by the people who tune it.
Quoted per build
Learn more about Installs & FabricationDyno Sessions
Baseline runs and health checks on our dyno for cars we did not build or tune.
Quoted per build
Learn more about Dyno Sessions
Common questions
Street rebuilds through 900hp+ race engines. Most of our customer cars land in the 500 and 700hp clubs on E85. Tell us the goal and how the car is used and we will spec the build to match.
All three. Flex-fuel tunes read the ethanol content sensor and blend between the pump and E85 maps automatically, so you can fill up with whatever is available.
Engine-only builds can be shipped in on a pallet. Tuning, two-step setup and installs need the car here. The quote form asks which you prefer.
A healthy engine with no boost or fuel leaks, fresh plugs, good tires and enough fuel for the session. If anything is marginal we will tell you before we make power runs.
Yes. Warranty terms depend on the build tier and how the car is used; they are spelled out in your quote and build sheet. Tuning by another shop voids the build warranty.