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The early SPIs had a reputation for dropping valve seats which would then procede to destroy pistons, valves, heads, etc. Though i belive this was only in the 97's. There was an engine revision in the 98's and again in the 00's (and possibly in the 99's but i'm not sure). At any rate, my question would be if those engines were damaged as a result of dropped seats or detonation becasue "regular old daily drivers" SELDOM have detonation problems. Espicially fully computer controled ones that are, at worst 8 years old.
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