I've tried the +4s twice now ( I'm a slow learner).. Both times, I had rough idle issues..
I tried it in my Jeep, and Buick.. I won't try them a third time...
Jay
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89 300SEL Money Pit
92 Blown Buick Ultra Pimpmobile 220K and adding 1K per week
88 Wagoneer Slightly modified (Not for soccer moms)
04 Kia Sedona with every option... NICE
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