Did I get a free de-carb?

[Old Rotor]

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I have a '04 A/T with 36K all up to date on "TSB's" and service. I have noticed that the power was off mostly on the top end. I changed plugs, coils, wires, air filter, cleaned A/F, no change. So I have a friend that is a master mechanic and he ran a compression test(with the proper Mazda equip). The front was 6.7 at 240rpm and rear was 8.2 at 245rpm. His ALLDATA-online said 6.9 was min and 1.0 difference between rotors was max. This is why I brought it to my Mazda dealer to have them run a compression test. They said they would run CARBON REMOVAL PROCEDURE($300+ if needed) if it tested low. I picked it up about six hours later($176 for test and oil and filter) and the compression tested at front 8.4(no rpms given?) rear was 8.8. It's fine they say did not need de-carb he also added its 6.5 min and 1.5 max between rotors is Mazda specs.......hmmmm? I've driven it a some and it seems a little better. Hmmmm.....my service rep said they called Mazda....why? Maybe to get ok on free de-carb. I will have to check it again someday.

 

[BOOSTR]

Seeing this made me wonder why it was $300? After reading this pdf, sort of makes sense why the dealer would charge so much given all of the steps and testing. Ouch, glad I can just use a $7 can of seafoam when needed.

http://www.finishlineperformance.com/pdf/rx8/bulletin/01-014-08-1924.pdf

 

[Old Rotor]

Look at what is at the end of the "TSB". It is covered(for 96 months or 100K miles) if they can prove it is needed.

WARRANTY INFORMATION
NOTE:
This warranty information applies only to verified customer complaints on vehicles eligible for warranty
repair.
Warranty term coverage is 8 years (96 months) from the original warranty start date, with a 100,000
mile mileage limitation.
Additional diagnostic time cannot be claimed for this repair