Question about spark plugs for MY05
09-12-2005, 01:51 AM
#2
Registered User
Join Date: Jan 2005
Location: Texas
Posts: 53
Car Info: 05' Subaru WRX
Just use the stock plugs. If your looking to up your HP then I would defintely not recommend using aftermarket plugs. Only in special applications, or if you;ve had alot of engine work done, and they told you to use a certain aftermrket plug would I ever buy one. I've seen aftermarket plugs throw CEL's, make engines idle rough, and they don't seem to be worth the extra 4 dollars a plug. Ask your local Subaru parts guy or Tech and see what he says. 
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