SB49

My 91 440 Prowler calls for a BR9ES NGK plug. My understanding is that the BR9ES and The BR9EYA are interchangeable plugs. The EYA has a grooved tip that is supposed to reduce plug fouling. My question is does anyone here have first hand experience with the EYA plugs and did they find them better than the standard ES plug.

BC_Dan

I had a 90 Prowler and tried the EYA in that sled to keep the plugs from fouling. They fouled just as much as the ES ones did. I tried a few others, too. I finally adjusted the oil pump and plug fouling went to pretty much zero, even with the ES plugs. I still carried 4 spares, though

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2007 Dragon RMK 700 155", 2008 RMK 600 155", 2006 RMK 600 144", 95 Prowler 550 2-up, 1990 Indy 650, Really OLD AC Cheetah

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smallengineguy

I use Iridium BR9EIX plugs and they don't foul nearly as much. More expensive though.

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1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month! (Lost in fire 4-7-13)
1992 Ski Doo Mach 1 original
2006 Ski Doo MXZ 500SS
1999 Ski Doo Grand Touring

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kccats

Stay with the BR9es plugs! The EYA's are harder to read!