Is there any real gains in performance in using platinum/iridium spark plugs? I heard that using these plugs would help gain some hp and torque. Is this true?
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1998 Mystique
Mods coming very soon.(Only had car about 9 months)
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
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Don't know how well they'd work in our cars but my son put them in his (Honda) and they did make a noticeable difference in engine response and idle. I'm probably going to give them a try as well, although at around $40CDN a pop they're not cheap. I have used the Bosch Platinums in other vehicles I've owned (BMW 528i, Toyota Supra etc) and didn't notice a whole lot of difference there. Jonnie
98 Zetec Contour SE
Sony XPlod CDX-CA900X HU
Sony XPlod XM-2150GSX amp with JBL 8" Sub
(Not much so far but workin' on it)
Plugs add no power (unless the plugs comming out were bad, in which case you gain what you lost back).
Its more about longevity.....double plats for example last longer in wasted spark ignitions like ours. Splitfire, +4s, all hype/marketing BS...
1999 Amazon Green SVT Contour (#554/2760)
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Originally posted by pimpin1320: Is there any real gains in performance in using platinum/iridium spark plugs? I heard that using these plugs would help gain some hp and torque. Is this true?
I pitted for a Nascar team one year. And our $75,000 engine LOST 4 hp when we put SplitFire plugs in it. Platinum MAY give you .2 HP but is it worth the extra $20 ? Save your dough for a cold-air intake, they DO work. Ken 99 SE Silver Frost Contour 2.0 Zetec ATX.
My Bosch +4 were eaten alive by my Ford Probe. Like 2000 miles before the first one failed, when I pulled it out, it was a Bosch +2.5 Splitfires = crap Bosch +4 = crap Motorcraft/Autolite = good NGK = great
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Pre98 Zetec - Some Mods
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ