Bike hit rev limit at 5K (with and without PCV Xtend active)
#11
10-26-2009, 01:49 PM
Outstanding HDF Member
Were you watching the tach on the bike or the tach on the dyno? Reason being because on 2008-2010 drive by wire models when you raise the rev limiter to 6200 with RevXtend with the Power Commander it takes over the crank signal and with this strategy the tach will stop at approx 5100 RPM's even though the motor will continue to rev to 6200.
Maybe I'm missing something here. Its sounds like you guys are all saying what jamie asked in the quote. On my '08 with my lap top hooked up the tach stops at about 5100, but the PCV software says it revs right on up to 6200.
I've never had mine on a dyno but i would guess it would also indicate 6200
#12
10-26-2009, 02:28 PM
Cruiser
The first time that I wound my bike after the PC V install, I thought something was wrong, also. But after watching the tach and listening to bike, I found that the tach stopped well before I hit the rev limiter. After doing a little searching on here, I found that this was normal. Even tho my tach doesn't show it, I am confident that I am hitting my rev limiter at 6200 - 6500 RPM.
#13
10-26-2009, 02:51 PM
Eric,
Can you post up the dyno sheet so we can see where it cuts out? If the dyno shows it clipping at 5K, that is really strange. I'll bet Jamie could figure it out if he got the bike.
I have a 2009 SG and only left the rev extend on for some dyno pulls. Mine went to about 6300 on the dyno, but the tach quiting at 5100 drove me nuts. I didn't feel much of a boost by letting the Big Twin run up a little more. Back to the normal setting for me.
Bob
Can you post up the dyno sheet so we can see where it cuts out? If the dyno shows it clipping at 5K, that is really strange. I'll bet Jamie could figure it out if he got the bike.
I have a 2009 SG and only left the rev extend on for some dyno pulls. Mine went to about 6300 on the dyno, but the tach quiting at 5100 drove me nuts. I didn't feel much of a boost by letting the Big Twin run up a little more. Back to the normal setting for me.
Bob
#14
10-26-2009, 02:54 PM
Road Master
What am I missing here, I thought that with a stock 88 or 96, their HP peaked somewhere in the 5000+ RPM range. Let's just say that the power peaks at 4800, I would want an accurate tach reading up to at least 5300 so I could average the most HP in each gear for maximum acceleration. I'm having trouble believing that PC or anyone would market a product for high performance that would render the tach practically non usable.
#16
10-26-2009, 07:33 PM
#17
10-26-2009, 08:03 PM
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#18
10-27-2009, 09:58 AM
note... when you hit the rev limitter you will know it.... the bike just shuts down
if you hit 5100 and the motor is reving and making noise its still spinin
i usually give it the ole one onethousand two onethousand then bang a gear.. if you wait ANY longer it will just shut down...
if you hit 5100 and the motor is reving and making noise its still spinin
i usually give it the ole one onethousand two onethousand then bang a gear.. if you wait ANY longer it will just shut down...
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