stef12rr
Expert Class
Posts: 144
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posted April 30, 2007 12:44 PM
power commander ignition module
Do i need that with a 1287cc with hot intake and exhause cam ?
  
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ZXLNT
Needs a job
Kawpuke Extraordinare
Posts: 2853
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posted April 30, 2007 07:35 PM
Do you NEED it? You dont NEED it. However, you could probably seem some gains with it...
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stef12rr
Expert Class
Posts: 144
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posted May 01, 2007 02:34 AM
i am asking this question because the dyno tehcnician, told me it will ping with doubt the device
thanks
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entropy
Moderator
Posts: 8671
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posted May 01, 2007 03:31 AM
stef
do u have a PC3 USB??
If you do, you will need the ign module to change timing adv (or the muzzy mech adv), but i have no idea why yr dyno guy says it'll "ping" without the ign module.
Are you spraying and wanna pull timing out???
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stef12rr
Expert Class
Posts: 144
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posted May 01, 2007 02:45 PM
yes i do have a Pc 3 usb
the dyno guy he told me i will need it, because it will ping
right now my bike don't ping but it running rought a 7000RPM an after 8000rpm not to bad
What i am gonna do , i will put the bike on the dyno and will see if it will ping,
some poeple said he good but some said he not ,i had the feeling he want to sell an issurance policie
so when i told him that i was taking some advice from you guy the song change a litle bit ;o))
even here in Montréal we hear about you!!
thank
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Texas12R
Zone Head
Posts: 545
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posted May 03, 2007 02:35 AM
The Bad News......detonation can do damage before you hear the ping....ask Doug Meyer
He can explain it better that I could hope to...
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entropy
Moderator
Posts: 8671
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posted May 03, 2007 04:25 AM
i don't understand about the ping worry???
Is yr Compression ratio real high??
Do you know yr cold cranking pressure???
Like Texas says, it is very likely you WILL NOT HEAR PINGING.
I would match fuel to CR, keep AF 13.0:1 or slightly less, and not worry about pinging at all
If you are spraying, its a whole different story, but [sgt Schultz voice] "i know nothing" about spray.
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Texas12R
Zone Head
Posts: 545
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posted May 03, 2007 05:18 AM
Thanks Karl  thats basically the information that Doug had given at some point ,and Im not
held in high esteem so what I say or think really is disregarded.....but it is important
to know the factors that affect normal combustion....
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted May 03, 2007 06:13 AM
As long as you are not spraying, stock timing won't likely hurt you, but you may not be getting all the power possible. It depends on what you're looking for.
Regarding "pinging", on a naturally aspirated engine on the dyno, if you hear it and get out of the throttle immediately, or the engine runs through the bad spot (usually around peak torque) and it goes away, you'll probably not hurt anything. But you have to correct the condition or you will hurt it. On a turbo or N2O engine, if it rattles and you hear it, it's very likely damaged and would warrant an inspection. You need to know that it's happening well before you hear it. That's your final warning.
Doug
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