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Forum: Engine/Performance 05-19-2011, 01:58 PM
Replies: 18
Views: 31,939
Posted By THEHMONGYAJ87
wow that looks pretty bad. looks worse than my...

wow that looks pretty bad. looks worse than my gsr motor when I cracked it open at 170k miles... no premium for this xD then.... Thanks
Forum: Engine/Performance 05-18-2011, 01:58 PM
Replies: 18
Views: 31,939
Posted By THEHMONGYAJ87
kool.. thanks

kool.. thanks
Forum: Engine/Performance 05-18-2011, 01:28 PM
Replies: 18
Views: 31,939
Posted By THEHMONGYAJ87
Yeah, because my old gsr with a 10.1 comp ratio...

Yeah, because my old gsr with a 10.1 comp ratio requires premium only.
Forum: Engine/Performance 05-18-2011, 12:05 PM
Replies: 18
Views: 31,939
Posted By THEHMONGYAJ87
What grade octane should I use?

Hi, I have a 2011 scion xD RS3 and just wondering if I should use regular or premium. I'm only asking this cause I notice the comp. ration on the 2zr-fe is 10.0 which seems pretty high for a engine...
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