Bad Dyno Tune??
Bad Dyno Tune??
So I had head work and cams done. They dyno tuned and The numbers for there dyno tune is off. Take a look at the in-Hg and the correction is wrong. So now that said would you have to retune it or have them pay another shop to tune it? I think they have been fixing there sheets awhile now because I know someone that had his tuned by them last may and his in-hg is way off also...
Another problem is it shoots alittle black smoke out of the pipes when you rap on it. What causes that?
Another problem is it shoots alittle black smoke out of the pipes when you rap on it. What causes that?
Grand HDF Member
Joined: Nov 2004
Posts: 3,917
Likes: 184
From:
Valve leak? Hornick was the baseline run you showed run at the same place? If so then yes, something is up. First I'd ask them about it and here there reson for the change. By the temps I would say it was at the same place. Also could have been a different Dyno operator and if it's blowing black smoke, alot of it I'd get it checked out before you wash your rings out, not good for a new build.
1 other reason for the black smoke, they may have your idle enrichment up so when you first crank it up it's a little rich. Is it still smoking after it's warm?
1 other reason for the black smoke, they may have your idle enrichment up so when you first crank it up it's a little rich. Is it still smoking after it's warm?
Seasoned HDF Member
Joined: Oct 2007
Posts: 56,052
Likes: 88,322
From: Western South Dakota
Ah man, that's too bad to hear.
Nothin' more frustrating than for indies to learn on your prize possession, is there?
Is there anybody that you know fairly well and trust that could/would check this out for you?
Good Luck and keep us posted.
Nothin' more frustrating than for indies to learn on your prize possession, is there?
Is there anybody that you know fairly well and trust that could/would check this out for you?
Good Luck and keep us posted.
Valve leak? Hornick was the baseline run you showed run at the same place? If so then yes, something is up. First I'd ask them about it and here there reson for the change. By the temps I would say it was at the same place. Also could have been a different Dyno operator and if it's blowing black smoke, alot of it I'd get it checked out before you wash your rings out, not good for a new build.
1 other reason for the black smoke, they may have your idle enrichment up so when you first crank it up it's a little rich. Is it still smoking after it's warm?
1 other reason for the black smoke, they may have your idle enrichment up so when you first crank it up it's a little rich. Is it still smoking after it's warm?
Hopefully I can talk to a good guy tomorrow and see what he has to say.
Tourer
Joined: Jan 2010
Posts: 253
Likes: 1
From: S E Michigan
A few thoughts - when I had mine dynoed a couple of years ago after a stage 1 upgrade, the in. hg. was 29.51. It sounds to me like they tuned yours in the middle of a tornado to have a pressure that low.
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