Independent Porsche Specialists — Simi Valley
Independent Porsche service — IMS, PDK, bore scoring, and full PIWIS III.
The failures your dealer won't discuss. The repairs that matter.
IMS BEARING
The 996 and early 997.1 flat-six carries an IMS bearing that fails without warning. We perform ILK retrofit before failure — not after catastrophic engine damage. Every 996/997.1 in our shop gets an IMS assessment.
BORE SCORING DETECTION
M96 and M97 engines suffer bore scoring — cylinder wall damage that causes oil consumption and eventual seizure. We inspect every affected engine with a borescope before quoting any major service.
PDK SERVICE
PDK fluid degrades faster than Porsche admits. We use correct fluid specification, perform mechatronic unit inspection, and run adaptation resets after every service — steps most shops skip. 997.2 and 981/982 owners: we also inspect the DFI (direct fuel injection) carbon buildup at every major service interval.
Oil & Filter Service
Factory-spec oil changes with OEM or premium synthetic oil and filter.
Learn More →Brake Service & Repair
Pad, rotor, caliper, and brake fluid service. Safety inspected every visit.
Learn More →Diagnostics & Scan
Factory-level diagnostic scanning for all fault codes, modules, and systems.
Learn More →Transmission Service
Fluid exchange, filter, and full inspection for automatic and manual transmissions.
Learn More →Cooling System Service
Coolant flush, thermostat, water pump, and radiator inspection and repair.
Learn More →Suspension & Steering
Shocks, struts, tie rods, bushings, and full wheel alignment service.
Learn More →Vehicles We Service
4.9
Google Reviews
20+ YRS
Independent Porsche
2-YR
Parts & Labor Warranty
PDK
Fluid & Mechatronic Service
Pre-purchase inspection on a 981 Boxster. They put it on the PIWIS III, drove it, and gave me a 12-point written report before I signed anything. Found a rear main seal seep the seller hadn't disclosed. Saved me from a bad buy.
Common Questions
Porsche PDK fluid should be changed every 30,000–40,000 miles for enthusiast driving, or every 50,000 miles for street use. Porsche specifies PDK as a ‘lifetime fill’ but real-world data shows fluid darkens and clutch wear particles accumulate. Neglect leads to shudder, engagement hesitation, and eventual mechatronic damage. We use genuine Porsche-approved ATF and perform a full flush.
The Intermediate Shaft (IMS) bearing supports the intermediate shaft in M96/M97 flat-six engines (1997–2008 Boxster, Cayman, 911). Failure is typically catastrophic and without warning. We recommend an IMS retrofit for any affected vehicle that hasn’t had one — we use the LN Engineering ceramic bearing kit or IMS Solution depending on engine variant.
Most Porsche engines specify Mobil 1 0W-40 (Porsche A40 standard). Some newer 9XX turbos with variable valve timing require 0W-20 low-SAPS oil (C6 spec). Using the wrong viscosity can trigger VVT faults and accelerate IMS oil starvation on older engines. We verify the correct spec for your specific model year before every service.
Water-cooled Porsche flat-sixes have known cooling vulnerabilities: the coolant reservoir degrades and cracks with age, and the coolant temperature sensor can fail silently. For 997.1 and 987.1, also inspect the rear main seal and water pump housing for coolant loss. We recommend a full cooling system pressure test on any vehicle over 60,000 miles or 8 years old.