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512RWHP... 503RWTQ... 7M
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3,292 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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Supra Enthusiast
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2,382 Posts
+1

I've never had any luck with Bosch plugs. Whenever someone with an asian car buys them from us at work, they usually come back within a week or so. I always try to push NGK's
 

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Big HP = Big Downtime
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2,995 Posts
Stay away from them. I used them and the car ran like shit for a month before i realized what the cause was. My HG blew shortly after but it may or may not have contributed to that im not sure.
 

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stop pulling me over pigs
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1,259 Posts
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.
 

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Registered
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271 Posts
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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