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Old 06-16-2013, 08:06 PM   #11
pyro
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OK. Holy crap, everyone that said it would be the best money I'd spent on the bike were spot on. Perfectly smooth linear throttle response through the entire rpm range. No flats, lags, surges. No popping. My fuel air is now nearly a straight line at 13.1 - 13.4 all the way. It was very rich at the low end and quite lean at the top. My first full tank after tuning got better mileage than I was getting before, because it was so rich in the cruising range. The thing I love isn't even the more power in the seat of the pants test - it's the ride-ability improvement, the smooth throttle response. It's freaking amazing. The torque curve stays over 100 ft-lbs from 3000 to 4800 rpm before it slacks. Peak HP is right about 5100 and holds it until 5500 when it drops off before the rev limiter kicks in at 5800 rpm.

I can't say enough about how the throttle feels now. No surges, flats... I actually DID achieve more power with less fuel - but again it wasn't magic. It was just way to rich in the low rpm ranges.

Stock numbers (before pipes & intake mods): 84.66 HP, 97.88 ft-lbs.
(From a motorcycle-usa.com review of the 2005 VTX1800 - I never dyno'd my bike when it was stock)
Numbers before the tuning: 86.63 HP, 100.27 ft-lbs.
Post tuning results: 91.88 HP, 103.49 ft-lbs.

I'm pretty stoked. No expensive hypercharger, just did the Bean's airbox mod and spyker mod, PAIR removal, K&N, and Vance & Hines Big Shots with a Power Commander.

One of my riding friends here who also rides a VTX1800 has Cobra drag pipes and a Hypercharger. He can rightfully boast more power - he hit 94.73 HP at the rear wheel on the same dyno right before mine. (We got our bikes tuned together.) The tech said it was the open pipes more than the hyper charger - he has basically open pipes and I have a baffle.
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Old 06-16-2013, 09:18 PM   #12
GreenF350
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Glad to hear it!

That pretty much mirrors my experience with it too. I can't believe that "they" (on another VTX focused site) insist that the factory computer will adjust for pipes and intake modifications and run as good as stock, but that is another story...

When I did mine I went in looking to fix a specific problem and it came out like a new bike! Enjoy the improved driveability!

-Aaron
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2002 VTX1800C - V&H Bigshots w/baffles removed, Power Commander dyno tuned, 200 rear tire, Hardstreet Slim Bags, Palladin removeable sissy bar, Aeromach pullback risers, etc.

2003 VT600CD VLX - Holesaw exhaust mod, jetted appropriately and that's about all, but not for long......

1995 VT1100C2 ACE - V&H Straight Shots, jetted appropriately, 12" Mini apes, Saddlemen Teardrop Saddlebags

The mods are never 'done'....
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Old 06-18-2013, 06:37 AM   #13
woodytick
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those are good numbers, i'm looking into camming my Glide when i get home & changing the air breather out on it.
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Old 06-18-2013, 10:52 AM   #14
pyro
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I still can't get over my throttle. No matter how many jets, needles, & shims I threw into a carb I never came close to this. Of course, a carb isn't a perfect science, and I suck at it, but still. It's not too lean or too rich anywhere.

Anyone with an 1800 with any intake or exhaust mods - once you are done with your mods this is completely worth the price of admission. Seriously.
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Old 06-18-2013, 09:46 PM   #15
GreenF350
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Definitely worth it. You picked up a few more peak hp/tq than I did, but then again I was looking for driveability and sometimes it's "under the curve" that makes the most difference. Mine only went from 97.76 to 98.38 hp and 111.17tq to 113.3. The dyno numbers are just for bragging/bench racing anyway and aren't a perfect science. The real purpose should be for tunning IMO. My mixture was actually rich between 2250 and 3000rpm (around to 11:1) and a hair lean in the higher rpms. That is only at full throttle though on the graph they gave me. They looked at it at part throttle and did adjustments there too.

What I am curious about...did you get your gas mileage back? If so I was just wondering what it is now. That is something else I think improved from the dyno tune on mine as well.

Either way...I'm glad your results were as spectacular as mine!

-Aaron
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2002 VTX1800C - V&H Bigshots w/baffles removed, Power Commander dyno tuned, 200 rear tire, Hardstreet Slim Bags, Palladin removeable sissy bar, Aeromach pullback risers, etc.

2003 VT600CD VLX - Holesaw exhaust mod, jetted appropriately and that's about all, but not for long......

1995 VT1100C2 ACE - V&H Straight Shots, jetted appropriately, 12" Mini apes, Saddlemen Teardrop Saddlebags

The mods are never 'done'....
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Old 06-18-2013, 10:25 PM   #16
pyro
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I want to get through a couple more tanks before I say for sure, but I think I'm doing right where I was. I've been riding it hard, and my first tank ran 146.9 miles on 4.11 gallons of no ethanol. I can't wait to see what my rolli g average looks like. Before I put the big hole in my airbox and needed to remap, I was getting 149 miles out out of 4.0 gallons generally. I track e dry tank every time, so ill know soon.
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Old 06-19-2013, 01:09 PM   #17
CheeseMan316
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Quote:
Originally Posted by woodytick
i'm looking into camming my Glide when i get home & changing the air breather out on it.
Do what you want, it will still never be a honda.
Sorry, couldn't resist.

The first spring after I bought my bike (used) I had it tuned. I don't remember all of the details but I remember trying out different maps from various places before deciding to break down and spend the $250 on my own. Great decision. I ride hard, so I typically get 110-120 before the light comes on but when I'm 2-up with the wife it doesn't come on until 140. I can't imaging the S is a different capacity than the C and mine is a 4.67G tank so I think you are probably the same. I have put as much as 4.55 in the tank (didn't think I was going to make it).

The last thing I will say is that I didn't buy this thing for the fuel economy. Whether I am getting 30mpg or 40mpg I will ride it. The only inconvenient part of low fuel economy is long distance riding. I have to stop at least 2, sometimes 3, times on my way to TN. I also run 85-95mph on average peaking in the 110-115mph range (before the fairing) so that doesn't help.

And before you call BS on the speed from PA to TN, ask DoubleD or the VA Sheriff that stopped us for an autograph.
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Old 06-19-2013, 04:05 PM   #18
pyro
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I believe your bike has the fuel pump in the tank, where mine is down by the swing arm. I get 5.2 gallons in my tank.
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Old 06-20-2013, 11:41 AM   #19
CheeseMan316
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No. I have an external fuel pump. I believe all 1800 bikes after 2004 had external pumps which is what took it from 4.2 to ~4.7. Yesterday I did the valve adjustment on mine and drained the tank to make removing it easier (tell you how I did it without spilling a drop later). When I was done I put approximately 8 ounces of gas in the bike because I just had to get to the end of the road, it was less than 1 mile down hill to the gas station from there. The bike took 4.75 gallons and I always fill mine upright.

In order to drain the tank we opened the fill cap and put a shopvac on the opening. It generated so much suction in the tank that it sucked the gas and air up into the tank and I was able to pull the line and attach a drain line into a gas can. Not ONE drop spilled. After that it became lawn mower gas since it went into a can.
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Old 06-20-2013, 02:41 PM   #20
pyro
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Weird. I'm absolutely positive on my bike. Owners manual, fuel records, etc... The 2006 VTX1800S has a 5.3 gallon capacity. The most I've ever put it in, after running it dangerously close to empty, was 5.1 gallons.

I put quick disconnects on my fuel lines so taking my tank off is no longer a hassle.
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