⟲ 360° — drag meThe facts.
| Model | JP CJP 084H |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Yamaha V-MAX (2009–2016) |
| Installation | Plug-and-play, no wiring harness modifications required |
DescriptionThe whole story▼
The JP CJP 084H sits between the V-MAX's loom and its injectors with a map the owner writes, and unplugs to leave the motorcycle entirely standard.
Key Features
- Yamaha V-MAX (2009–2016)
- Fully programmable fuel map, written on a PC
- Complete two-axis management: engine speed and load
- For engines with an aftermarket exhaust or air filter
- Plug-and-play with model-specific wiring
- Unplugs at any time, nothing is written to the motorcycle
A V4 With a Reputation
Yamaha's 1679 cc vee was built to accelerate and very little else. Its fuelling is about managing an engine that produces more torque than the chassis wants.
Load and Revs
Those two axes define every operating point an engine ever reaches. A map with enough cells describes the whole of it, which is what complete management of the fuel map actually means.
Resolution Matters
A map with too few cells forces the unit to interpolate across large gaps, and the engine feels it. Enough resolution is what makes small, local corrections possible at all.
Full Load Is Easier
Wide open throttle is one line through the map and a dyno reads it quickly. It is also the region a road rider visits least, which is worth remembering before spending a day on it.
The Standard Sensor Is Not Enough
A narrowband oxygen sensor only reports near stoichiometric. It cannot tell you what the mixture is doing at full load, which is exactly where you need to know.
No Subscription
The software is supplied, the maps belong to the owner and nothing is rented. In a market moving the other way that is worth saying out loud.
On a Road Bike
Worth it if the motorcycle is genuinely modified and the owner enjoys the work. Otherwise the preset module reaches most of the benefit for less money and no evenings.
On a Twin
Widely spaced firing events make mixture errors easy to feel. Owners of large twins usually notice the improvement from careful mapping before anybody else does.
When It Is Finished
When another session produces no change you can measure and none you can feel. Beyond that point the work is a hobby rather than an improvement, which is a perfectly good reason to continue.
Fitment and Compatibility
- Yamaha V-MAX (2009–2016)
Specifications
| Model | JP CJP 084H |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Yamaha V-MAX (2009–2016) |
| Installation | Plug-and-play, no wiring harness modifications required |
What's includedEverything in the box▼
- 1x control unit
FitmentWhich bikes this fits▼
- Yamaha V-MAX (2009–2016)
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