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2007 SV650 - Ignition Module+QS+PCIII question
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2007 SV650 - Ignition Module+QS+PCIII question - February 13, 2009, 09:35 AM

So apparently the 2007 SV650 has two sparkplugs per cylinder and won't work directly with a PCIII and quickshifter.

I was told that I can either disconnect one of the spark plugs on the cylinder or I can buy some kind of Ignition Module for 200 dollars.

I'm obviously swaying toward the whole "unplug the sparkplugs" route but I'm worried about timing and horsepower implications.

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February 13, 2009, 09:39 AM

you shouldnt need the ing mod. the powercommander pluged into the quickshifter should cut the fuel, you only need the ing mod for bikes with dual FI because the PCIII can only control the main injectors and not the "shower injectors"


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February 13, 2009, 09:41 AM

the second set of plugs on the SV are to just burn off leftover fuel


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February 13, 2009, 09:42 AM

So I can unplug em?


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February 13, 2009, 09:47 AM

just make sure you dont unplug the primary ones, i would ask someone who knows SV's better to make sure but the QS kit plugs into your PCIII and the PCIII controls fuel, i know about the ing mod cuz i am setting up the QS on my 06 R6 and i have to get the ing mod to use it sux cuz i have to spend the extra cash on the ing mod


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February 13, 2009, 10:24 AM

If you do that (unplug 1 set of plugs) will the 03-06 SV power commander work? Or if you still have to use the 07-08 SV PCIII won't you still be in the same boat you're in now?
I was actually wondering this same thing since mine's an 07 as well.
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February 13, 2009, 10:26 AM

http://forums.13x.com/showthread.php?t=204606

Posted on WERA, not much feedback yet.


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February 13, 2009, 11:34 AM

Quote:
Originally Posted by JWZelibor View Post
the second set of plugs on the SV are to just burn off leftover fuel
Emissions probably.
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February 14, 2009, 01:54 PM

This may help some

http://forum.svrider.com/showthread....ight=sparkplug

If not send an email to Zoran


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February 15, 2009, 01:57 PM

This is just my OPINION.
Back in the day dual-plug heads were used to compensate for incomplete fuel burn in the combustion chamber. Usually from a head design that didn't allow for optimal burning of the fuel charge under all conditions.
NO WAY would I not use the 2nd plug to save a $200 on a RACEBIKE.
Ben, IMO just get the adapter and leave all the plugs firing.
You detonate a cylinder or not make optimal power you'd wish you spent the extra money.


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February 15, 2009, 02:30 PM

Good advice, Steve.

According to the WERA thread there are two different PCIII's for the SV06 and before and the one 07+. I'm assuming, and hoping that the PCIII for the 07+ will resolve this issue.... if not I'll buy the module.

I'm going to have enough issues to think about without modifying the combustion cycle.


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February 15, 2009, 02:58 PM

Quote:
Originally Posted by SteveZX9 View Post
This is just my OPINION.
Back in the day dual-plug heads were used to compensate for incomplete fuel burn in the combustion chamber. Usually from a head design that didn't allow for optimal burning of the fuel charge under all conditions.
NO WAY would I not use the 2nd plug to save a $200 on a RACEBIKE.
Ben, IMO just get the adapter and leave all the plugs firing.
You detonate a cylinder or not make optimal power you'd wish you spent the extra money.

Sonar concurs. Typically, dual plugs are spaced so that equal spark occurs over the surface of the piston. While the SV650 may have a smaller bore, it's optimal to have both plugs fire per cylinder to insure you have even combustion, bet it emissions related or not.


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