Running lean or not?

984 Views 9 Replies 8 Participants Last post by Rainbow, Dec 7, 2007

USAF Dad

Discussion Starter · Nov 29, 2007

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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Rainbow

· #10 · Dec 7, 2007

Classic said:
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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