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Old 07-09-2002, 04:29 PM   #1
Scooby Specialist
Member#: 2094
Join Date: Aug 2000
Chapter/Region: SCIC
Location: I'm from LA, we invented gangs
1999 2.5 RS-T

Default .028 gap for spark plug?

The place where i got my car dyno-tuned (Brainstorm) said to gap my spark plugs at .028 but i was researching the board and no one seems to go this low. Any comments? FYI my plugs are NGK BKR7E-11

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Old 07-09-2002, 04:32 PM   #2

Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
16 WRX (white)
04 FXT (red)


Uh, no.

Stock gap is specced .040-.044". IIRC, you were supposed to close the gap .004" for every 75hp. I run mine in the .036-.038" range when turbo'd.
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Old 07-09-2002, 11:20 PM   #3
Eric SS
Sooby Guru
Member#: 1914
Join Date: Jul 2000
Chapter/Region: SWIC
Location: 2014 Q60S, 2016 Chevy SS
2000 2.5RS w/ EJ22T
swap and N20. gone. : (


I run mine at .035 or so. You shouldn;t have any problem with flameouts at this gap, especially with the subaru ignition

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Old 07-10-2002, 01:05 AM   #4
ImprezaRS dot com
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Member#: 1458
Join Date: May 2000
Chapter/Region: RMIC
Location: Colorado Springs CO USA
2017 WRX Limited
2015 Forester XT, Tribeca


I run 12+ psi with NGK BKR7EVX11 gapped at 0.035 but my old Denso Iridium came gapped at 0.028 and they worked fine too.
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Old 07-10-2002, 08:09 AM   #5
Scooby Guru
Member#: 7089
Join Date: May 2001
Chapter/Region: NWIC
Location: Western Wa
2016 STi


I've gapped from .024 to .032 on the wrx, and the car ran fine.
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