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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Old 05-02-2012, 02:17 AM   #1
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Plug gap advice

Hey there guys,

I'm trying to get everything spot on for dyno day.

I currently gap my plugs at 0.9 with my stage 5.

Any other recommendations ?

Cheers
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Old 05-02-2012, 02:57 AM   #2
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sounds good to me Sir Boge! Thats what i run on my stage 4… 0.9mm with NGK.
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Old 05-02-2012, 03:15 AM   #3
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Your properly right Steve.

Its not miss firing or anything, Just curious what people are running.

I've heard a smaller plug gap will create more HP.


But, I also hear and read alot of things
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Old 05-02-2012, 04:56 AM   #4
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Quote:
Originally Posted by bogan View Post
I've heard a smaller plug gap will create more HP.
Serious?
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Old 05-02-2012, 11:27 AM   #5
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Too small (narrow, and I mean VERY narrow margin between right/wrong) and you lose power. Too big and the DIC is strained to a point where you get misfires. I'm running the .042" factory gap on the NGKBCPR7ES11's @ 30psi and have had no problems aside from the occasional knock.
-Cm
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Old 05-02-2012, 01:42 PM   #6
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I'm also running about .9 mm or .035". I tried .032 but I would agree that some power was lost.
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Old 05-02-2012, 11:53 PM   #7
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Thanks guys,

I'll stick with 0.9mm.

I've just gotta get all these stupid questions out of my system, Then I'll be right. .
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Old 05-05-2012, 11:43 AM   #8
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.8mm works for me on e85 and gas. .9 seems to be a little too large for e85 once you get much past 1 bar boost, don't know if that's a concern for you or not.
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