Vehicle Tuning & Performance

Overview

Modern direct-injection engines have a problem old port-injection engines didn't — fuel never washes over the intake valves, so carbon builds up on the back of the valves over time. The first signs are rough idle, misfires, and fuel economy that gets quietly worse. The fix is walnut-shell blasting, which mechanically cleans the valves without touching the rest of the engine.

We also handle performance tuning and ECU remapping for owners who want a bit more from their car — done responsibly, with the right knock detection and exhaust setup behind it. And for emissions work, we tidy up the underlying fault rather than just clearing the code and hoping it doesn't come back.

What we cover

• Walnut-shell blasting for direct-injection carbon build-up
• Throttle body and idle air control cleaning
• Performance ECU remapping (where reputable)
• Dyno testing and diagnostic data review
• Emissions-related fault diagnosis
• EGR valve cleaning and replacement
• DPF regeneration and cleaning for diesels
• Pre-WOF emissions tidy-ups

Performance work could help if…

• Rough idle, especially on a direct-injection turbo engine
• Misfires, hesitation or flat spots in the power band
• Fuel economy noticeably worse than it used to be
• Check engine light with misfire or EGR fault codes
• Loss of power on diesels — possibly DPF related
• You want a bit more out of the car and want it done right

Our approach

Diagnostic first, before anything else. We need to know whether you've got carbon, a tune issue, an EGR issue or something else — chasing the wrong fix is just expensive. From there we quote and complete the work with before/after data so you can see the difference.

Why us, here in Kapiti

Performance work done responsibly. We won't tune a car onto cheap fuel, with a stock clutch behind it, hoping nothing breaks. Honest advice, properly done.