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Here are SAAB's recommendations Posted by RS [Email] (#15) [Profile/Gallery] (more from RS) on Sat, 2 Feb 2013 14:06:33 In Reply to: Best plugs for turbo?, Bill S [Profile/Gallery] , Sat, 2 Feb 2013 07:50:37 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Part of the answer is "it depends".
If you do a lot of short hops, where you might have fouling of the plugs due to a lot of cold operation, SAAB's recommendation is the 7EV.
Otherwise it's the 7ES.
I used to use the 7EVs in my '89 SPG, but about 10 years ago I switched to the 7ES and haven't seen any difference in performance. I change plugs at about the same interval.
The graphic below is from the Townsend Imports website.
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