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Bosch platinum 4

Posted: Sun Jun 19, 2005 12:54 pm
by Burger
Is there anyone out there using these plugs?I'm curious about how they perform in our cars.Oh yeah,i'm also looking for the number for the correct heat range.

Posted: Sun Jun 19, 2005 9:17 pm
by Sporttunergtv6
i am using them on both my cars. they definately changed something. i went from bosch 1's to the bosch 4's and car ran noticeably different. afterwards i played with the timing advance and the the air fuel ratio via spring tension and the cars reallly ran well.

Posted: Mon Jun 20, 2005 6:17 am
by John in Denver
I've been using them for some time on my '83 and have had no trouble with them.... they work very well. When I bought them, the shop had a compatability list.

Posted: Mon Jun 20, 2005 5:49 pm
by Burger
Thanx,I've been told that the 1's foul easily,but I would only run 4's or Goldens anyway.The bosch 4's are $10CAN each though,but,what are ya gonna do?