New Dyno Tune

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Apr 20, 2009 | 08:23 AM

#11

harleytuner

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From: Fredericksburg, Va.

You should call them back and tell them you would like a printout in SAE and not STD, that way you will know where your bike is really at. And for charging you that much, they could of done a little work on the timeing.

Apr 20, 2009 | 08:35 AM

#12

archergodwin

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From: Northwest

Quote:

Originally Posted by harleytuner

To bring the HP up a little sooner?

and

What's the difference between the SAE and STD printouts?

Apr 20, 2009 | 09:56 AM

#13

harleytuner

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From: Fredericksburg, Va.

SAE and STD are units of measure, you can look at them like metric and standard.SAE is the unit of measure we use in the states, STD is used over in Europe. Tuners in the states use STD for 1 of 2 reasons, 1 they don't k now any better or 2, STD is about 3% higher than SAE so they use it to make their numbers higher to make their shop look better. I can tell your timing is off by looking at the rough lines, especially at your lower RPM's, a properly tuned bike will have smooth lines.

Apr 20, 2009 | 10:32 AM

#14

yso191

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From: Yakima, WA

HarleyTuner,

It seems to me the SAE/STD issue is moot as long as everybody is using the same system. Consistency is more valuable than absolute numbers IMO.

The rough line issue has my attention though. I drove 3.5 hours each way, so I'm not inclined to go back tomorrow. How important is this?

See the rest of the story is the tuner was in a hurry. I had the bike in Saturday morning 1st thing because I had to get back home at a reasonable hour. They had a computer problem, yada, yada, and didn't get started on the bike till about 2:00PM! I ended up getting out of ther at 5:30 rather than 2:00 as originally estimated.

The bike is running great. Strong, smooth power. I have no complaints that way. So given that it is a 7 hour round trip, how important is this timing issue?

Steve

Apr 20, 2009 | 04:18 PM

#15

harleytuner

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From: Fredericksburg, Va.

First off, the SAE and STD IMO is not a moot point. When people are comparing numbers, you have to compare apples to apples, and I think that tuners that print out in STD are shady, but like I said, that's my opinion. A tuner that is in a hurry is a scary thing, not that I haven't been there myself, but getting your bike tuned properly is what you went there for in the first place, it sucks that you are so far from them, but if they don't give you all they can, you might not be any better off than if you would've just stuck a canned MAP in it in the first place. At the bare minimum, they should have cut you a break on the price, after all, you didn't get the full tune so you shouldn't have to pay full price.

Last edited by harleytuner; Apr 21, 2009 at 08:23 AM.

Apr 20, 2009 | 05:28 PM

#16

jstreet0204

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Quote:

Originally Posted by harleytuner

your valves aren't opening and closing at the right time, that's why your lines look choppy.

So if you were doing a dyno tune, how would you correct that? Do harleys have adjustable cam gears?

Apr 20, 2009 | 06:34 PM

#17

yso191

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From: Yakima, WA

Well, I forwarded the map they made and the dyno chart to Doc, and asked about the rough lines and here is his reply:

Quote:

The rough graph could be timing or fuel delivery.. no one can say which one it is with out seeing the map and actually tuning the bike. Be careful what you read off those forums.... I seen the rough part of the tq and I did some adjustments ....no need to take it back. The roughness could be tire bounce too...there is too many things that leave tell tale signs

Good enough for me.

Steve

Apr 20, 2009 | 06:43 PM

#18

txtec

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From: underground

Quote:

Originally Posted by harleytuner

First off, the SAE and STD IMO is not a moot point. When people are comparing numbers, you have to compare apples to apples, and I think that tuners that print out in STD are shady, but like I said, that's my opinion. The timing issue is important IMO as well, your valves aren't opening and closing at the right time, that's why your lines look choppy. A tuner that is in a hurry is a scary thing, not that I haven't been there myself, but getting your bike tuned properly is what you went there for in the first place, it sucks that you are so far from them, but if they don't give you all they can, you might not be any better off than if you would've just stuck a canned MAP in it in the first place. At the bare minimum, they should have cut you a break on the price, after all, you didn't get the full tune so you shouldn't have to pay full price.

if you look at his airfuel line its up and down up to 3500 same as the trq line,looks like still needs fuel adjusments. how many harleys have you tuned??? a tuner that says the valves arent opening and closing right because of a tune is a scary thing. your right about the sae though,latus uses std and 5th gear pulls for bigger numbers,check there dyno pages on there website,BIG #s