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512RWHP... 503RWTQ... 7M
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3,186 Posts
Dont waste your money on Bosch Platinum plugs, especially if yur turbo'd... I had them in my Supra and anyhing over 12psi I was poppin and back firin... I switched to NGK Iridiums and I could boost it to 16psi with out any problems...

My advice, stay away from Bosch...
 

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TheSUPE87 said:
good for GMs- not supras.

Go with NGK or denso, those two are your best bet if you want platinums. I love my NGKs - they make my engine run as smooth as butta.

What he says! But i like the Denso's. :)
 
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