My PCV and dyno #'s - Victory Forums - Victory Motorcycle Forum
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post #1 of 21 (permalink) Old 08-09-2012, 02:41 PM Thread Starter
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Default My PCV and dyno #'s

I just got my XCT back from MPH Peninsula, Ohio (authorized Power Commander tuning center) I was pleased with the rideability gains that I got, but was a little disappointed with the H.P. numbers. I started with Ness Big Honkers, Air Filter, and Stage1 reflash. the dyno said 90.47 HP 109.25 TQ. Then with the PCV and with the o2's removed and plugged 91.20 HP 109.49 TQ. The air-fuel ratio was about 13.5 across the spectrum, before it was much leaner down low. I would have liked to seen the stock numbers as a comparison. Am I wrong to be disappointed at spending nearly $800 to get almost no power increase?

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post #2 of 21 (permalink) Old 08-09-2012, 03:17 PM
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The numbers don't change much with a PCV. The ride does. The bike should be running smoother and more responsive. It was probably money well spent in the long run.

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post #3 of 21 (permalink) Old 08-09-2012, 04:21 PM
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You need a better air intake system if you want to increase performance. Have you removed the silencing strip from the airbox? Lloydz will have their new air filter available soon. Should be lots of gains in that.

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post #4 of 21 (permalink) Old 08-09-2012, 04:24 PM
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For what you have. The numbers are pretty spot on. So many people buy things like Power Commanders, and do not need them, nor do they see any tangible improvements. We all thought we were done with peer pressure in high school.....didn't we?

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post #5 of 21 (permalink) Old 08-09-2012, 05:27 PM Thread Starter
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Halfcrazy I do have the strip removed, Kevinx I wanted to cure the low RPM lean condition which I did. I just thought I would get some more ponys in the bargain. Doug at MPH suggested I could get the best of both worlds from a 20 shot of NOX utilizing the dual fuel mapping in the PCV. Under 1000 turnkey

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post #6 of 21 (permalink) Old 08-09-2012, 05:56 PM
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Quote:
Originally Posted by gheim View Post
Doug at MPH suggested I could get the best of both worlds from a 20 shot of NOX
When Lloydie's new airbox is available... That and some cams would be cheaper, the power is always there, and the bottle never runs empty.

Once you try the 20 shot you'll want 50... then more... You'll end up hurting it.

I find the drivability and fuel mileage improvement more than worth the cost of the PC and tune.




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Primo Clutch Spring, 31 Tooth Pulley w/Buell Belt.
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post #7 of 21 (permalink) Old 08-09-2012, 06:46 PM
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Quote:
Originally Posted by half_crazy View Post
When Lloydie's new airbox is available... That and some cams would be cheaper, the power is always there, and the bottle never runs empty.

Once you try the 20 shot you'll want 50... then more... You'll end up hurting it.

I find the drivability and fuel mileage improvement more than worth the cost of the PC and tune.




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post #8 of 21 (permalink) Old 08-09-2012, 06:47 PM
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Quote:
Originally Posted by kevinx View Post
For what you have. The numbers are pretty spot on. So many people buy things like Power Commanders, and do not need them, nor do they see any tangible improvements. We all thought we were done with peer pressure in high school.....didn't we?
Kevin, so your saying that I'd be better served just adding the D&D exhaust, adding Lloydz new air filter and getting it dynoed?

If so, should I leave the O2 senors plugged in or take them out so bike doesn't run so lean or would this be corrected with a dynoed bike?

If you recommend I take the O2 sensors out will the bike pop on decel?

I thought that was the reason why some folks buy the PCV and auto tuner?

Do you know if Victory new exhaust for the XCT are as good as the D&D's?

If I do buy a PCV and auto tuner do I still need the bike dynoed?

Sorry for all the questions, I'm just trying to sort things out prior to making any mistakes and I know your very knowedgeable about these motorcycles.

half_crazy or anyone else please feel free to help me understand all this a little better, thanks guys!

Last edited by sixshooter_45; 08-09-2012 at 06:53 PM.
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post #9 of 21 (permalink) Old 08-09-2012, 07:36 PM
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Ran D&D with filter strip removed S1 map and 02 disconnected for the first couple thousand on my XC. Ran like a top. No lean surge or excsessive pops. Power was great, and I guess mpg would have been; if I rode like a sane individual. Next I added cams and nothing else. Ran it like that across the whole winter. Made 106/114 with no fuel controller at all. Mixtures were closer to 14 then 13, but still well within acceptable range. Summer came and the engine felt a little warmer; plus I could force a ping with 89 octane. So I added a VFC3. Still made the same numbers on my Dyno, and temps are down now with the slightly richer mixture. I just installed the new Lloyd's filter and should be spinning her in the next couple of days.
Guess what I'm saying is there is no need to buy a controller with a basically stock engine. S1 mapping is fairly decent, and with the 02 unplugged makes good power without a sacrifice to drivability or expensive or complicated fuel control

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post #10 of 21 (permalink) Old 08-09-2012, 08:54 PM
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Quote:
Originally Posted by RedRocker View Post
Yes, yes and Most Definitely, YES!
I see you got Kyle to tune yours too... Mine has never run this good and been so ridable. Not to mention the mpg went up by EIGHT.

No, you don't NEED a Power Comander... but having one is freakin' SWEET!

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