Firing order 1-2-3-4 & 1-3-4-2

General Topics for configuring, operating and tuning the Megajolt. Also see the <a href="http://www.autosportlabs.net/MJLJ_V4_Operation_Guide">Operation Guide</a>

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damunk
Posts: 65
Joined: Mon Aug 05, 2013 8:44 pm

Firing order 1-2-3-4 & 1-3-4-2

Post by damunk »

Please see pic.

This is how my system is wired up 1-2-3-4

In Elsawin my cars firing order is 1-3-4-2

Does megajolt coilpack fire 1+4 together and 3+2 together?
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fireoprder.jpg
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brentp
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Post by brentp »

To be precise, It fires pairs of cylinders together, so it's up to you to connect them to the cylinder matching the firing order.

Fortunately, with a 4 cylinder car it only takes a bit of trial and error to figure out the right combination if you have something switched around.
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Alex B
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Location: Hegra, Norway

Post by Alex B »

Swap cylinder 2 to coilpack contact 3 and cylinder 3 to coilpack contact 2 and you are ready.

Alex

damunk
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Joined: Mon Aug 05, 2013 8:44 pm

Post by damunk »

I've been driving up to 100mph for 4 days now with current setup.
The car was setup by professional tuners.

Am I doing damage to engine?

brentp
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Post by brentp »

Does your engine run smooth or does it buck and backfire violently? If you're getting up to 100MPH then I'm guessing the former is the answer...
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damunk
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Post by damunk »

It's just not quite giving the performance I was hoping for.


However, It's smooth through the revs and gears. No backfire, 0 jerks.

How can this be so good in this aspect if it was wired incorrect.

brentp
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Post by brentp »

If it's smooth, then next step is to put it on a dyno and tune torque throughout the power band, by optimizing ignition advance under various engine conditions. The Megajolt has a fully customizable ignition map, so this part is critical for best performance.
Last edited by brentp on Thu Sep 11, 2014 3:04 pm, edited 1 time in total.
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damunk
Posts: 65
Joined: Mon Aug 05, 2013 8:44 pm

Post by damunk »

Yes!!!!!

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