Bosch Platinum Plugs
 

I've heard of people pinging with the platinum plugs and theyre mainly to last long and not really for performance and I just did a tune up on my car and I see that I have been riding around with the platinums (I bought the car in Oct.) and put in some Autolites instead. Was this smart because the plugs that I took out were pretty clean and I never had pinging though the car feels "peppier" now The plugs that were in there have the inscription "HR9BPY Germany R6 768" if that makes a difference.



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1993 Mustang GT - March Ram Air & Pullies, K&N, C&L 73mm MAF, 3.73 Gears, Super Competition Hooker Headers, 2 1/2 in. mandrel bent cat back, High Flow H-Pipe, Pro 5.0 Shifter, 16* Timing Advance

You are correct in your assumption. You'll get better performance out of the Autolites, but longer life out of the Bosche Platinums.

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Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph

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