Frequently asked 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.

Every product lists the chassis (FB, FC, FD, RX-8) and engine (12A, 13B, 13B-REW, Renesis, 20B) it fits. Filter any collection by your vehicle and only matching parts show. If you are unsure, use the fitment question link on the product page.

All used parts are tested to confirm they work before they are listed. Electrical parts are bench-tested; rotating assembly parts are measured and inspected.

In-stock parts ship in 1–2 business days. Built-to-order items list their lead time on the product page. Engines and long blocks ship freight on a pallet; we will quote freight before charging you.

Some rebuilt parts carry a refundable core charge. Send us your old part within 30 days of delivery and we refund the core charge in full once it is inspected.

New, uninstalled parts can be returned within 30 days. Used-tested parts are covered by a 30-day functional guarantee. Electrical parts that have been installed are not returnable unless defective. See the full returns policy for details.

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.