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Does anyone read these?
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Discussion Starter #1
I just installed HardKrome Strippers on my 07VN900C. The idle hasn't changed and I only experience an occasional (rare) pop on deceleration. It occurs more often if I ride before the 5? minute warm up process is complete. The bike runs great, but I'm concerned about it maybe being lean and damaging the valves (or whatever else). If it runs OK and doesn't pop, should I feel OK with it? I don't want to invest in a PCIII since I have no intention of messing with the air intake. How can I check for a possible lean condition??
Thanks
 

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Registered
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19,728 Posts
Take a spark plug out and see if it is really white. If it is, it may be too lean. Most bikes from the factory are lean. I'm not enough of a mechanic to tell you how to make it richer, someone else will have to do that.
 

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Does anyone read these?
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Discussion Starter #3
I can richen it by installing the PCIII. I just hate to do that if I don't have too. I was fairly sure about the white plug = too lean thing. Now if I can get a plug out short of pulling the tank. :(
 

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Patriot Guardian
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28,016 Posts
With just pipes, you're going to be fine.
 

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Thanks to all Veterans!!!
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I can richen it by installing the PCIII. I just hate to do that if I don't have too. I was fairly sure about the white plug = too lean thing. Now if I can get a plug out short of pulling the tank. :(
It don't have to be a PCIII, it can be any of a number of fuel controllers. The PCIII is more aimed at racing setups, and is more expensive because of it.
 

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The Cruising Gunsmith
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1,459 Posts
I just installed HardKrome Strippers on my 07VN900C. The idle hasn't changed and I only experience an occasional (rare) pop on deceleration. It occurs more often if I ride before the 5? minute warm up process is complete. The bike runs great, but I'm concerned about it maybe being lean and damaging the valves (or whatever else). If it runs OK and doesn't pop, should I feel OK with it? I don't want to invest in a PCIII since I have no intention of messing with the air intake. How can I check for a possible lean condition??
Thanks


If it runs strong when it's warmed up but a shade lean when cold, that sounds like it is right on target. I doubt it could be lean enough to hurt anything unless it was running pretty balky.

The plug color will tell the tale.
 

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Ahhh Crap
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Actually, the popping was always there, you just couldn't hear it with the stock pipes.
 

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Does anyone read these?
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Discussion Starter #8
Actually, the popping was always there, you just couldn't hear it with the stock pipes.
I'm glad someone mentioned this. Actualy, I thought I heard an occasional pop on previous occasions with the stock exhaust. But as mentioned, it's so difficult to hear that I probably wasn't noticing how often it was happenning.

Thanks for all the opinions guys.
 

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Actually, the popping was always there, you just couldn't hear it with the stock pipes.
Hi Proud USAF Dad,

Classic is absolutely right. The stock pipes hid the sound underneath all the good baffling and Cat converter. The spark plug colour will be the quick way to answer your main question. If you are not planning to add PCIII (or similar) and modify the air intake to increase air flow then just the pipes on their own are fine. Some find their bikes are running very slightly lean in this situation. Ride safe.
 
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