At Renn Select, our commitment to your ownership journey extends far beyond handover. In direct partnership with Rennworks Ltd—an official member of the Porsche Partner Network (PPN)—we provide complete factory-level maintenance, advanced diagnostics, and specialist upgrades for modern, classic, and GT Porsche models.
Our Servicing & Upgrade Capabilities
Dealer-Level Diagnostics & Coding
Official Porsche PIWIS diagnostic systems linked directly via the Porsche Partner Network (PPN) to accurately diagnose warning lights, update software modules, and troubleshoot complex electrical issues without guessing.
Scheduled Maintenance & Servicing
Factory-scheduled Minor and Major servicing, spark plug replacements, brake fluid renewals, and preventative care executed using genuine OEM parts and Porsche-approved fluids.
ECU Tuning & Performance Software
Bespoke ECU recalibrations and TCU transmission remapping designed to safely unlock additional horsepower, engine responsiveness, and optimized gear shift speeds for road or track.
Suspension & Precision Geometry
Coilover fitting, lowered spring installations, control arm upgrades, and custom fast-road or track wheel alignment setups using advanced optical geometry equipment.
Performance Exhaust Systems
Supply and expert fitting of high-flow exhaust systems, sports catalysts, and valve-controlled mufflers to elevate acoustic exhaust notes while increasing exhaust gas flow.
Borescope & Health Inspections
Comprehensive pre-purchase checks, cylinder wall borescope inspections, and full diagnostic health reports to verify mechanical integrity before buying or selling.
Why Rennworks?
We align ourselves only with technical partners who share our uncompromising standards. Being a part of the Porsche Partner Network gives Rennworks direct access to official Porsche technical literature, software updates, wiring diagrams, and genuine factory parts ordering.
This guarantees your vehicle receives official main-dealer standard care, accurate digital service history updates, and technical precision—delivered with transparent, specialist service.
Servicing & Upgrades FAQs
What is the Porsche Partner Network (PPN) and what does it mean?
Will servicing at Rennworks protect my Porsche vehicle warranty?
Do you use genuine Porsche diagnostic software?
Can you supply performance hardware directly?
Do you offer track preparation and setup services?
How do I arrange a service or performance upgrade?
Book A Diagnostic Check Or Discuss An Upgrade
Whether your Porsche requires routine upkeep, complex fault finding, or bespoke performance enhancements, our technical team is ready to assist.
Get In Touch With Our Team →Contact Details
Unit 8Shangri-La
Stevenage
Hertfordshire
SG1 2JE 01438 553911 sales@rennselectporsche.co.uk


ASTON MARTIN
PORSCHE
TOYOTA