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bosch +4's.....any good?

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Old 04-15-2006, 10:05 PM
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Question bosch +4's.....any good?

for a s/c application? pros/cons/thoughts?

Old 04-16-2006, 01:32 AM
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IMO one ground strap should do just fine.

Four ground straps are for looks. But who looks inside your cylinder?
Old 04-16-2006, 05:57 AM
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I have never dealt with them but every one says there ****, I have however used NGK iridium, and they are good stuff.
Old 04-16-2006, 07:21 AM
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I have used them and they are overated. Personally i prefer the ngk plug.
Old 04-16-2006, 07:29 AM
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Best test would to be have them tested on a dyno with the same truck using a few different popular brand plugs. (O.E., NGK, & Bosch)
I don't think anyone will be doing this though unless they owned a dyno.

Jim
Old 04-16-2006, 07:48 AM
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I have never had any luck using Bosch +4 plugs,they ran worst than stock in my daughter's V6 Camaro.I have had good results using Denso Iridium plugs with my truck.
Old 04-16-2006, 07:56 AM
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I have ran them in my dirt bike and they suck, the electrode came right out of the plug, I think it was cause by high compression but not for sure. When this happened to me I was about 5 miles from truck, lets just say that was a hell of a push. The next plug I put in my dirt bike was a NGK and never had any problems.
Old 04-16-2006, 11:34 AM
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The bosh plugs are JUNK.....seen them cause engine failure more than once.
Old 04-16-2006, 11:42 AM
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i ran plus 2s for about 3k in my stang ran fine
i run plus 1s right now for about 9k in stang and have no issues
a buddy ran plus 4s for about 50k and n ever had issues


but i wouldnt use a platimun core plug for any boosted/juiced application. only NA i would
Old 04-16-2006, 11:49 AM
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I wouldn't run Bosch anything in antyhing I own, not even in my neighboors lawnmower.

The +4's are about worthless and WAY WAY overpriced. They lead you to believe that the extra electrodes are good, but they aren't, they provide no extra benefit unless you loose 3 of them, you will still have one left.

Go with NGK's or a Denso if you want to really spend some money on them.


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