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Old 09-05-2001, 01:33 AM   #1
subysouth
Scooby Guru
 
Member#: 5039
Join Date: Mar 2001
Chapter/Region: South East
Location: Ocean Springs, MS
Vehicle:
2007 Outback XT
Grey 5-speed

Default When did the 2.2L heads change to single exhaust ports?

Can someone enlighten me? TIA
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Old 09-05-2001, 02:10 PM   #2
SubyTechMaster
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Member#: 4423
Join Date: Feb 2001
Location: Placerville, CA USA
Vehicle:
'04 08 Tribeca, SVX
Gold, Maroon

Default

The 2.2L with a single exhaust port first appeared in '96. Primarily because CA emission 2.2L vehicles were classified TLEV (transient low emission vehicle) and received some other changes as well. The single exhaust port helps theh Cat. Convertor heat up to operating temp faster.
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Old 09-06-2001, 12:25 AM   #3
subysouth
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Join Date: Mar 2001
Chapter/Region: South East
Location: Ocean Springs, MS
Vehicle:
2007 Outback XT
Grey 5-speed

Default Thanks STM

I was curious, I have the 2.2L heads with the dual outlets. I think the 2.5L headers will fit my car. I'm hoping anyway.
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