Spark plug fore more HP - Suzuki GSX-R Motorcycle Forums
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post #1 of 4 (permalink) Old 05-10-2018, 06:58 PM Thread Starter
Track Day Winner
Join Date: Oct 2016
Posts: 72
Spark plug fore more HP

Hello i am trying to tune my bike on dyno , i have GSXR 1000 L4 , commander 5, ignition module , full taylormade exhauet , BMC air filter,

Now i tested on OEM CR9EIA spark plug on dyno tuning and from changing timings on ignition does nothing, i used colder sparks CR10EIX and i recived from ignition 8HP , i have question is it better to use CR10EIX. Or CR10 EIA ,?
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post #2 of 4 (permalink) Old 06-15-2018, 05:50 PM
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Join Date: Nov 2007
Location: Rochester, NY
Motorcycle: 2003 GSXR 750
Posts: 9,918
Re: Spark plug fore more HP

Sorry you lost me at Taylormade . Wasted Money. Maybe E3 spark plugs will help.

Last edited by coopgt1; 06-15-2018 at 05:54 PM.
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post #3 of 4 (permalink) Old 06-15-2018, 06:45 PM
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Motorcycle: 2006 GSXR "250"
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Re: Spark plug fore more HP

You did not make 8hp more on a plug swap. The only reason you'd get 8hp more from a plug swap is if your originals were fucked, or if you have a highly modified bike with the completely-wrong heat range, or you're extinguishing spark.
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post #4 of 4 (permalink) Old 06-16-2018, 12:09 AM
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Re: Spark plug fore more HP

Wait...changing ignition timing does nothing for you? Are you sure?

I am going to go out on a limb (no, not really) and say that whatever plug that you use won't matter that much. Nailing down plug numbers involves way more engine work than you are even remotely doing.

As far as "EIX" or "EIA," how often are you gonna change the plugs, anyway? Anyone who does 5 or 10k a year and changes the plugs every season is throwing money away, let alone paying double the price for the Iridium.

Unless you are going nuts with engine mods, Iridium plugs simply last longer and offer no performance gain... and regular plugs last longer than most people use them for, anyway.

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