Not sure what forum this would go in, so it goes in here :)

TheSubaruJunkie · Post by **TheSubaruJunkie** » Sun May 02, 2004 8:54 pm

Im going to be doing a tuneup soon on my EJ22T. I know to use NGK plugs, but what should I gap them to? I have a diamond coilpack and 7.5mm magnacore wires. If anyone can tell me the stock gap that'd be great.

Timing... Ignition timing

Can it be adjusted? If so, what is stock and where should it be for optimal performance? What is it that controlls the ignition timing as well?? is it the ECU?

Im not looking for a huge increase in power, but just a more comfortable power band.

THanks Guys
-Brian

vrg3 · Post by **vrg3** » Sun May 02, 2004 9:17 pm

The manual specifies a gap of 1.0 to 1.1 mm (0.039 to 0.043 inches). If you get NGK plugs whose part numbers end in "-11" they will be gapped from the factory at 1.1mm, so in all likelihood you won't have to adjust them. You should still definitely check each plug though.

You can't adjust ignition timing. It's completely controlled by the ECU.

THAWA · Post by **THAWA** » Mon May 03, 2004 1:49 am

my ngk's aalways come regapped to .044, I'm too lazy to regap them. I wanted to try .040 but meh.

vrg3 · Post by **vrg3** » Mon May 03, 2004 2:32 am

Hm. Maybe you should try part number BKR7E-10, THAWA.

TheSubaruJunkie · Post by **TheSubaruJunkie** » Mon May 03, 2004 2:46 am

I was talking with Steve (cant pronounce his board name) today and he was talking about an Apex-i controller that tapped into the ECU and took over the ignition. I see there's notches on the crank with numbers, so i assume you can check the timing. I havent done so yet though.

Now that I have a AWIC to play with, i want to make sure everything else is in order before I start toying with boost. Also, i need to see if my coffee cup will work

-Brian

rsstiboy · Post by **rsstiboy** » Mon May 03, 2004 10:59 pm

I run a 0.8mm gap but then again I run 18psi all day every day.

TheSubaruJunkie · Post by **TheSubaruJunkie** » Tue May 04, 2004 12:43 am

So with more boost would i want less gap? I would assume to keep timing correct and ensure a strong spark.

-Brian

vrg3 · Post by **vrg3** » Tue May 04, 2004 2:20 am

Yes; higher boost means the mixture is more difficult to ignite and so with the same spark voltage you might need a smaller gap to get combustion to happen.

TheSubaruJunkie · Post by **TheSubaruJunkie** » Tue May 04, 2004 8:06 am

Ah, i see... thats a totally different aproach than Im used to with the 84 Wagon

-Brian

rsstiboy · Post by **rsstiboy** » Tue May 04, 2004 8:48 am

I also run 4 bosch HEC716 coils, from a 5ltr V8, and the V8 only uses 1 of those coils, I have plenty of spark

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Not sure what forum this would go in, so it goes in here :)

Not sure what forum this would go in, so it goes in here :)