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Stock map leaning out. Blame Canadian gas?


dmanaenk

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Trying to get my head around this LV pic.

Engine is stock, running stock map, air filter is stock, changed this spring. Had a pristine LV pic a month ago or so.

 

Went to Canada this weekend, missed an entrance to duty-free gas station and ended up pumping some Canadian 94 octane @Sunoco (there were two choices: 94 and 94 'with up to 10% ethanol', I picked first), which I suspect has plenty of ethanol anyway. Normally run 93 octane.

 

Could this explain the trim D correction or do I have bigger issues?

I though trim D should be with-in plus/minus 1%

1083553098_LearningView_SS_21_09.2010193424.jpg.a9d80d2f2d67ab922d3052a4156186e4.jpg

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huh?

 

there's nothing wrong with that LV. On a completely stock car trims can vary a lot and it doesn't matter. Heck, even on a modded car the trims can vary more than a lot of people say. They're supposed to vary. I checked the trims on my completely stock daily driver once (using a generic scantool) and the long term trim was +12%. Car drove fine.

 

keep driving it.

On the search for a new DD...
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