Do I need a tuner to use a Shibby harness?

Yes. The harness is a bridge between your tuner and your truck's engine computer. The tuner itself handles all the programming and adjustments. The harness just delivers that signal cleanly and safely.

Will this work with my current tuner?

Shibby harnesses are designed to work with most aftermarket tuners on the market. Check the product listing for your specific truck year and engine to confirm compatibility before ordering.

Is installation difficult?

Not at all. You're plugging into factory connectors, not splicing wires. If you can use a wrench and follow instructions, you can install this in under an hour. No special tools required.

Can I remove it and go back to stock?

Completely reversible. Unplug the harness, reconnect the factory connectors, and your truck is back to bone stock. No permanent modifications, no footprint left behind.

Does this trigger a check engine light?

No. The harness simply passes signal through. Your tuner controls whether codes are set or deleted. Most people run without any CEL once properly tuned.

What if I have questions during install?

We're here. Reach out with photos and your truck year/engine, and we'll walk you through it step by step.

How does this handle DEF and emissions systems?

The harness doesn't interfere with DEF (diesel exhaust fluid) injection or the rest of your emissions hardware. Everything stays in place and functional. Your tuner handles how aggressively emissions are managed.