997 TURBO CLAIM-COMPARISON RECORD
https://yenra.com/porsche/turbo.html

Reference: Porsche 2007 US 911 Turbo brochure, VTG pages 26–31 and technical data pages 90–91. This aid compares documentary claims; it does not instruct acceleration testing. Preserve speed endpoints, units and transmission. Keep manufacturer specifications separate from independently measured results.

1. Vehicle and claim
Model year / market / body / transmission: _________________________________
Relevant options / modifications / evidence: _________________________________
Exact claim and what it is intended to establish: _________________________________

2. Source A
Document title / date / URL / page: _________________________________
Manufacturer specification or independent measurement: _________________________________
Value / units / start and end speeds: _________________________________
Timing method / surface / tires / weather / load: _________________________________
Conditions unreported: _________________________________

3. Source B
Document title / date / URL / page: _________________________________
Vehicle configuration and evidence type: _________________________________
Value / units / start and end speeds: _________________________________
Timing method and other conditions / gaps: _________________________________

4. Conclusion
Which conditions match: _________________________________
Which differences prevent a direct comparison: _________________________________
Narrow supported conclusion: _________________________________
Evidence required for a stronger conclusion: _________________________________

FICTIONAL WORKED EXAMPLE
A fictional comparison pairs Porsche’s 3.4-second Tiptronic S brochure value with a magazine’s 0–100 km/h time for another car. The researcher records different endpoints and an unreported difference in timing method. The defensible conclusion is that the two published figures cannot yet be treated as a controlled comparison. A matched test or fuller methodology is the next evidence needed.

FOLLOW THROUGH
Evidence requested and from whom: __________________________
Date received and what it establishes: ______________________
Unresolved question and next action: ________________________
Decision and reason: ________________________________________
Keep the original evidence with its date, market and vehicle applicability. A blank field means unresolved. Separate published specifications, seller statements, your observations and professional findings. Retain personal identifiers and ownership documents privately. This worksheet records questions and evidence; it is not an inspection certificate or a repair procedure.