2 different cars, same dyno, 6 mos apart, same exact hp and tq

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Old 09-23-2016, 01:37 AM
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Default 2 different cars, same dyno, 6 mos apart, same exact hp and tq

Ok , took my car to a local houston area shop ( ill leave unnamed for now) for e85 conversion and intake for my ctsv. Had been watching a thread over on ctsv owners forum of someone else that had coupe like mine with same mods. His hp on dyno sheet was 580.77 rwhp, 535.98 tq. His was done in march. Mine was done yesterday. Mine when i got it today was 580.77 and 535.98. EXACTLY the same. I think i have been duped and maybe the other guy too. Is this even possible for 2 different cars to have same
Exact numbers. I cant argue the car makes much more power now and the jnstall was fine. I would not have been upset if the power was a little lower (dyno) as long as it was the actual numbers. Ill post copies of the dyno sheets tomorrow.
Old 09-23-2016, 07:37 AM
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I see your suspicion, it's reasonable. It's possible to get EXACTLY the same, but doesn't seem LIKELY to me. That said, it could be a rut in the numbers due to how it calculates. The easy way to verify isn't cheap, it will involve paying for another run. You could do it there, or somewhere else. You could add a simple mod (different air filter, different pulley, etc) and take it back to the same dyno, or just take it as is to a different one. Either way would give you some comfort if you're in the ballpark. What were the atmospherics on both runs?
Old 09-23-2016, 01:54 PM
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I would look everywhere else at the graph and compare the two. If the numbers all across the board are the same then you definitely have something to complain about. There is, of course, a very small chance that they made the exact same power everywhere but that is very unlikely.
Old 09-23-2016, 06:02 PM
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Here are the dyno sheets. I talked to the other owner and got him to send it to me.

Boost exactly the same, curve the same, hump at 4500 rpm on both (not on the 555HP one, but on both 480.77)

It IS the same dyno, with my name on it. I am positive.

Mine is Daren_E85, the other owner is Jason V Coupe E85







You be the judge...
Old 09-23-2016, 11:32 PM
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Maybe the two cars are telepathically intertwined through the V!
Old 09-24-2016, 06:48 AM
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Were you also paying this shop to "Tune" your car, in addition to the E85 and intake work?
Old 09-24-2016, 07:45 AM
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Yea something is up
Old 09-24-2016, 08:57 AM
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Don't worry guys, madmike is all over this. We will get to the bottom of it.
Old 09-24-2016, 09:27 AM
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Originally Posted by twinturbo496
Were you also paying this shop to "Tune" your car, in addition to the E85 and intake work?
Yes they were
Old 09-26-2016, 07:11 AM
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Same shop tuned both cars?
Old 09-26-2016, 07:23 AM
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Originally Posted by Bad Chad
Same shop tuned both cars?
Yes they did.
Old 09-26-2016, 08:33 AM
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There is zero question about it IMO, those are the same graphs.

You cant even get the same car to duplicate its own boost like that, let alone be absolutely identical to "yours" or anyone elses.
Old 09-26-2016, 10:23 AM
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In for the shop name...
Old 09-26-2016, 11:22 AM
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Sad thing is, I bet it would be easy to guess in just a few shots.
Old 09-26-2016, 04:29 PM
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In for shop Name... I'm I Houston and I bet I know who it is. that's the same exact graph laid over to your "Dyno"
Old 09-27-2016, 07:23 AM
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The dyno should not be the be all end all. It should give you baseline and afr readings. What does it do at the track
Old 09-27-2016, 07:25 AM
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Originally Posted by chrysler kid
The dyno should not be the be all end all. It should give you baseline and afr readings. What does it do at the track
He got jipped bruh... Lol they gave him someone elses dyno sheet
Old 09-27-2016, 07:34 AM
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It only took about 15 seconds on google to find the shop name.

To the OP, my only suggestion would be you call the shop and ask to speak with the owner. This situation could easily be the result of an unscrupulous employee trying to inflate their personal tuning abilities, the owner may not be aware of what is going on...

Just my 2 cents...

Craig
Old 09-27-2016, 07:50 AM
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I would be pissed!!! you paid good money for a tune, makes you wonder if they even strapped it on a dyno and gave you a good tune...
Old 09-27-2016, 10:20 AM
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Possible yes, about as likely as hitting the powerball by yourself.... shady at best.

Did you share this on the V forum as well? Maybe someone else is showing off the same graph.


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