Every change must support the whole car.
Design, chassis, drivetrain and interior decisions should reinforce the same character.
Micarja Racing
A Porsche is never the end. It’s only the beginning.
Micarja Racing · OEM+ Philosophy
What Is OEM+ Porsche?
OEM+ Porsche is a development philosophy built around one principle: improve the car without losing the engineering logic, character and usability that made the original Porsche work.
OEM+ is not defined by a parts list. It is defined by the quality of the complete result.
Factory-level coherence
The finished car should feel intentional, not assembled.
Engineering balance
Performance, chassis, braking and usability develop together.
Long-term ownership
Reliability and serviceability remain part of the brief.
The definition
OEM+ is not about adding more. It is about making the complete Porsche better resolved.
What does OEM+ Porsche really mean?
OEM+ is commonly interpreted as “Original Equipment Manufacturer Plus”. In practice, the term describes an approach in which improvements are developed within the logic of the original car.
Rather than treating wheels, suspension, drivetrain, bodywork and interior as independent upgrades, OEM+ development considers how each decision affects the complete Porsche.
The objective is not to hide the fact that the car has been developed. The objective is to make every modification feel as though it belongs.
Six core principles
01 / Integration
02 / Restraint
03 / Balance
04 / Materials
05 / Fitment
06 / Longevity
The foundation of a credible OEM+ Porsche.
OEM+ quality is visible in the relationship between decisions rather than in the number of components replaced.
More visual impact is not automatically better.
Proportion, stance and detailing should strengthen the Porsche rather than overpower its original design.
Performance must remain usable.
Power, braking, cooling, tyres, suspension and road behaviour need to develop together.
Material quality must be more than decorative.
Leather, carbon, textiles and metal finishes should contribute to tactility, durability and visual coherence.
Precision determines credibility.
Wheel position, panel relationships, ride height and component interfaces reveal whether a project has been properly resolved.
The build must still make sense years later.
Reliability, serviceability, documentation and timelessness belong in the original specification.
Why OEM+ feels different
The strongest OEM+ Porsche often looks simpler than the work behind it.
When wheel fitment, ride height, material choice, power delivery, braking and visual detailing all support the same direction, no single modification needs to dominate the car. The result simply feels right.
OEM+ vs traditional tuning
Traditional tuning
OEM+ Porsche
The difference begins with the question being asked.
Conventional tuning often asks how a particular part or performance figure can be improved. OEM+ asks how the complete Porsche can be improved without losing coherence.
Component-led development
- Often begins with an individual upgrade
- Performance numbers may be the primary target
- Visual impact can be treated independently
- Parts may come from unrelated systems or suppliers
- Integration depends heavily on final execution
Vehicle-led development
- Begins with the intended character of the complete car
- Performance is developed with chassis and cooling
- Visual changes remain proportionally disciplined
- Materials and fitment follow one direction
- Reliability and usability remain part of the brief
Interior philosophy
OEM+ becomes most personal inside the car.
The interior is where material quality, ergonomics and craftsmanship are experienced every time the Porsche is driven.
Leather type, stitching, seat construction, trim materials, steering-wheel tactility and surface finishes should form one coherent environment.
Premium materials alone do not create a premium interior. Their placement, texture, durability and relationship to the original Porsche architecture matter just as much.
Platform character
964
993
997
991 / 992
OEM+ should respect what makes each 911 generation different.
There is no universal OEM+ specification. The correct direction depends on the architecture, age and character of the donor Porsche.
Mechanical clarity
Compact dimensions, analogue response and a strong foundation for carefully developed mechanical refinement.
Air-cooled maturity
A more developed air-cooled platform where chassis, powertrain and visual restraint can create a deeply resolved road car.
Analogue meets modern
A useful balance between compact 911 proportions, modern usability and strong engineering potential.
Contemporary capability
Sophisticated platforms where OEM+ development requires even more discipline to preserve factory integration.
OEM+ case study
Porsche 964 C2 4.0 NA
A naturally aspirated 964 is a strong example of OEM+ thinking: mechanical response, proportion, stance and character developed without turning the car into something it was never intended to be.
The objective is not excess. It is to strengthen the qualities that already make the platform desirable and then resolve the complete car around them.
Frequently asked questions
OEM+ Porsche explained.
What does OEM+ Porsche mean?
OEM+ Porsche describes a development philosophy in which the car is improved while preserving the engineering logic, usability and visual coherence of the original Porsche.
Is OEM+ Porsche the same as tuning?
No. Tuning can be part of a project, but OEM+ evaluates every change as part of the complete vehicle rather than as an isolated upgrade.
Can an OEM+ Porsche have more power?
Yes. Additional performance can fit an OEM+ philosophy when cooling, brakes, chassis, tyres, transmission behaviour and reliability are developed around the same target.
From philosophy to specification
A serious OEM+ Porsche begins with the complete car.
Micarja Racing develops bespoke Porsche commissions around a defined brief, intended use and coherent engineering direction. The first decision is not which part to buy. It is what the finished Porsche should become.
Micarja Racing is an independent company and is not affiliated with, endorsed by or sponsored by Dr. Ing. h.c. F. Porsche AG.
OEM+ Porsche Guides
Explore all OEM+ Porsche insights, guides and technical articles: