Understanding V-Twin Sump Chemistry: Why Your Oil Mix Matters When it comes to maintaining a Harley-Davidson, oil choice is a frequent topic of conversation. If your bike is configured to…
Geoff GaitesSeptember 24, 2026
Why Your Gen-2 M8 Shuts Off Instead of Just Running Rough If you've ridden older Harleys, you probably remember how they handled a fuel problem: the Check Engine Light came…
Geoff GaitesSeptember 1, 2026
The technical reasoning behind my choice of measurement hardware. My hardware choices aren't about brand loyalty — they're about data integrity. I use the TTS MasterTune system paired with…
Geoff GaitesApril 21, 2026
A great calibration (tune) is about accuracy which begins with the equipment providing the data - sensors (read here) and software (read here). Sensor location is critical to achieving optimal…
Geoff GaitesApril 8, 2026
PERFORMANCE TUNING EXCELLENCE: THE TTS MASTERTUNE ADVANTAGE To our Valued Customers, When you invest in performance modifications for your Harley-Davidson—whether it’s a high-flow exhaust, a performance air cleaner, or a…
Geoff GaitesMarch 13, 2026
This is where the precision customizing takes place. When it must be done and it has to be right, we take matters into our own hands. Not only standard procedures…
Geoff GaitesJanuary 12, 2023
CYCLEDOCTOR: Harley-Davidson Health Specialists from Geoff Gaites on Vimeo. Specializing in American V-Twins
Geoff GaitesFebruary 11, 2014
Complete newbie; less than an amateur. Never ridden on a dirt track. This Honda CRF 450 isn’t even warmed up and already my heart is racing. This is the famous…
Geoff GaitesDecember 28, 2013
Everyone knows someone or has themselves gotten hurt riding bikes. Some are deterred, often permanently, and then there are those of us who are invigorated by the experience. I, obviously,…
Geoff GaitesSeptember 2, 1999