Year 2020, PNP won the world challenge to:

Homologate several Harley-Davidson E4 114 chassis types in Switzerland. The homologated mapping allows you to benefit from the best engine capacities of the manufacturer while respecting the federal limits of power, noise and NOX pollution. The homologated exhausts are the ideal combination to enjoy a 100% homologated Harley-Davidson in Switzerland.

The homologation of the stage 1 Harley-Davidson 114e4PNP1 is written on the registration card.


STAGE 1 HARLEY 1250_SPORSTER S , October 26, 2021

STAGE 1 HARLEY 1250_PANAMERICA , July 31, 2021

STAGE 1 HARLEY 107_114_117 2021 , February 12, 2021

Innovation is always on the move. Every year, new challenges arise for engine calibration engineers to be the first to make it work.



A unique sound thanks to the precision of our settings, the original or optional exhausts will deliver a whole rhythmic orchestra.​


An engine torque that is available as soon as possible for all gear ratios. We take great care in smoothing  out the curve tables, the engine behaviour becomes round and linear.

An immediate feeling of safety, so you can concentrate solely on the road.


Every engine tune is made for your Harley-Davidson.  

Real-time engine optimization for the latest manufacturer's software version compatible with the Digital Technician 2&3.

Tens of thousands of parameters are modified remotely by decrypting and decompiling the entire original engine control module.

The modified data takes into account your original or custom parts in an extended way in order to benefit from a balanced engine whatever the season.


Our developments on Harley-Davidson are carried out in a sustained and repetitive way on a Rotronic power dyno. Multiple tests on German road are carried out before our maps are marketed.


Price found 550 




All models until 2022
Fuel: SP 98_E5 SP100 and occasional SP95_E10

Extreme flow filter type KN

Original or Performance Exhaust



Price found 550 



Original power retained

All models until 2022
Fuel: SP95_E10 SP98_E5 SP100

Original or KN replacement filter.
Original, variable, homologated exhaust system



Price found 550



Reduced power retained

2017 to 2022

Concerning: motorbikes with manufacturer's restrictions

Fuel : SP95_E10 SP98_E5 SP100

Options : 

Original or KN replacement filter.

Original, variable, homologated exhaust


EVO e85® without additional box

Observed price 600€ ​


Fuel : E85 E10 E5 all volumes

Applies to: All models from 2021



Since 2017, Poivre Noir SA is the first company in Europe specialised in American engines to independently market their engine optimisation know-how to manufacturer's dealers.​​​



When riding in touring mode and when overtaking, the biker must concentrate on his engine in order to increase his speed by downshifting to ensure his good trajectory.

Depending on the manufacturer's settings, the standards in force and the quality of the fuels, the factory engine settings algorithms regularly show variations in comfort depending on the engine speed.

The throttle does not always open at 100% depending on the engine speed, even when the throttle is fully opened, the ignition and engine advance are under algorithmic pressure to burn the fuels. e5_102 - e5_100 - e5_98 - e10_95.

On the road, at 70 km/h in 5th or 6th gear with the throttle fully open, the acceleration is done by choking the engine, the engine does not find its momentum at the first attempt, its torque curve drops to replace it with power in order to take the high engine speeds and this obliges most of the time to drop one or two engaged gear ratios.

Obligation of result.
We have modified tens of thousands of parameters to achieve the Stage 1 Poivre Noir Performance that suits you.
We have optimised your engine with great care and in perfect harmony with your mechanics.
We ensure that you can drive safely, so that you can concentrate on the road from now on.

The first results will be visible on the lips of the driver and through the many testimonials on our official Facebook pages.

A recognizable sound that delivers a whole orchestra of muscle with

the idle speed lowered to 944 rpm or below according to the manufacturers' instructions.

A PN-P mapped motorbike is reactive and delivers a dull sound.

Much more fun at low speeds, the engine will run smoothly without any hesitation or harshness.  The revs will be linear and smooth.

A more than perfect driving pleasure.

A perfectly balanced engine for better gear selection.

Wonderful torque and power when you need it, the setting is optimised for each chassis, so you can ride sporty without even realising it.

As a duo, the passenger will benefit from improved comfort as the ride progresses.

Bikers who wish to remain Match-Number will be able to benefit from a stage 1 while keeping a 100% original motorbike, you will be free to put afterwards homologated exhaust, our mapping will adapt itself to the new configuration.

Bikers who wish to increase the torque and power of their engine can choose an open filter of the KN extreme flow to appreciate the sound of the intake and its quality of filtration in order to maximize the air filling of the engine.

Depending on the brand, it is advisable to use Iridium (high performance) spark plugs sold by motorbike dealers.

Bikers who wish to increase the sound of their motorbike while remaining legal, can choose our Vario engine mapping which will be perfectly adapted to variable exhausts.

We do not recommend driving with variable exhausts in closed mode unless the brand you have selected has an automatic opening function in case of high engine temperature.​

We have noticed that bikers who want to increase the power and sound of their Harley-Davidson to the maximum, install an extreme type of air filter and very short exhausts, often even empty.

The resonance in the intake will automatically modify the behavior of the engine mapping, the motorbike will have some imperfections on the engine progressiveness, this type of equipment is not advised, it is too antinomic mechanically speaking.

We refuse to improve motorbikes that have an engine setting that does not comply with the manufacturer's safety instructions. Most of the time, these settings are the result of the installation of a free download automation box and the safety tables are shifted, sometimes rendering them inactive.

Engines that have had this type of setting have suffered premature wear. 


Nobody can talk about a PN-P or peppered motorbike if they have never tried one ;)


A power bench measures the power at the "wheel" ( whp ) via a force sensor on a roller.

Once the shot is finished, the operator puts the gearbox in neutral and the power bench measures the speed at which the wheel and the roller slow down, in order to determine the "motor" power (hp).


In a "perfect and frictionless" world, the wheel once started would not change speed, and the "wheel power" would be equal to the "engine power", but the gears of the motorbike, the tyre, the chain or the belt, but also the moving parts of the dyno generate friction and the wheel inexorably slows down with the reading time, this is called the transmission loss.


On a motorbike, the transmission loss is generally between 10 and 15%, i.e. 100 hp at the wheel gives between 110 and 115 hp to the engine.
The powers figures given by the manufacturer are always given "at the engine" and not at the wheel because during development, the engine power is measured on a specific engine test bench directly without gearbox or transmission.