Contour Enthusiasts Group CEG

General >> Dyno and Drag

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MxRacer
Addicted CEG'er

Reged: 02/01/04
Posts: 7392
Loc: pony heaven
new math....
#1297714 - 08/10/06 06:47 PM

brothers car makes 540rwhp on a mustang dyno at 11psi while running out of fuel. take it to a different tuner, and it now makes 500rwhp on a dynojet at 15psi with plenty of fuel.

go figure.

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02 Mustang GT... Tuned by Nelsons. Low 12's, anyone?


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|/-\_________/-\_|
.\_/...............\_/

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Barge
Hard-core CEG'er

Reged: 04/04/02
Posts: 1695
Loc: Durka Durkastan
Re: new math.... new
#1297716 (Re: MxRacer) 08/10/06 06:49 PM

Another reason why dyno numbers are somewhat meaningless.

Top tuner of subaru's in Australia I believe dyno's his car at like 550 AWHP or so... run 8's. Top evo tuners in the states dyno at over 1000 hp and run 9's.

Dyno's are good for tuning.. the track is good for results.

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04 Subaru WRX "Eurosport bling bling fast and furious tokyo drift"
"They have diarrhea of the mouth, and constipation of thought"

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Tourige
Hard-core CEG'er

Reged: 05/25/04
Posts: 3637
Loc: Calgary, Alberta, Canada
Re: new math.... new
#1297731 (Re: Barge) 08/10/06 07:10 PM

Originally posted by Barge:
Another reason why dyno numbers are somewhat meaningless.

Top tuner of subaru's in Australia I believe dyno's his car at like 550 AWHP or so... run 8's. Top evo tuners in the states dyno at over 1000 hp and run 9's.

Dyno's are good for tuning.. the track is good for results.





Even then it varies from place to place with changes in alt and whatnot.

But i get what you mean.

The only way to see if your faster than someone, is pull up to the same track and go when the tree turns green.

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99 TRed Contour SVT # 1853 out of 2760
230.2 WHP @ 6500
237.0 WTR @ 2250

Originally posted by MxRacer:
Originally posted by RawBurt:
I'll be keeping it to myself, until the time comes. It'll be hard to find.




much like your weiner.




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striker2
Veteran CEG'er

Reged: 03/15/04
Posts: 536
Loc: Glendale Heights, Il (for now)
Re: new math.... new
#1298314 (Re: Tourige) 08/11/06 11:13 AM

also mustang dynos are not the most accurate. besides HP=trap speed and tourque=ET

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97 contour gl mtx
front & rear upper strut tower braces
19mm bat sway bar
Koni struts w/GC knockoffs


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warmonger
Hard-core CEG'er

Reged: 08/16/01
Posts: 5810
Loc: Ozark, AL
Re: new math.... new
#1298325 (Re: MxRacer) 08/11/06 11:54 AM

Originally posted by MxRacer:
brothers car makes 540rwhp on a mustang dyno at 11psi while running out of fuel. take it to a different tuner, and it now makes 500rwhp on a dynojet at 15psi with plenty of fuel.

go figure.




Easy, he added more fuel to be safe but the added fuel reduced heat of combustion and therefore reduced power. If it wasn't detonating before even though it was leaner, he could gain some of it back probably by leaning it back out. It isn't necessarily just the dyno though at 500+hp it could be run to run and dyno to dyno variation too.


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Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
See My Mods
'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
'06 Mazda5 Touring, 5spd,MTX, Black

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Kremithefrog
I have no life

Reged: 05/14/02
Posts: 21653
Loc: Albany, Georgia
Re: new math.... new
#1298399 (Re: striker2) 08/11/06 01:52 PM

Originally posted by striker2:
also mustang dynos are not the most accurate. besides HP=trap speed and tourque=ET



Actually from everything I've seen they're usually more accurate.
They're also better for tuning (which is what a dyno is really for anyways) because you can load the car to simulate real conditions. Other dynos are just WOT.

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98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)

FS: SVT rear sway bar
WTB: Very cheap beater

CEG Dragon Run - October 13-15

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Tourige
Hard-core CEG'er

Reged: 05/25/04
Posts: 3637
Loc: Calgary, Alberta, Canada
Re: new math.... new
#1298409 (Re: Kremithefrog) 08/11/06 02:02 PM

Originally posted by Kremithefrog:
Originally posted by striker2:
also mustang dynos are not the most accurate. besides HP=trap speed and tourque=ET



Actually from everything I've seen they're usually more accurate.
They're also better for tuning (which is what a dyno is really for anyways) because you can load the car to simulate real conditions. Other dynos are just WOT.




+1

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99 TRed Contour SVT # 1853 out of 2760
230.2 WHP @ 6500
237.0 WTR @ 2250

Originally posted by MxRacer:
Originally posted by RawBurt:
I'll be keeping it to myself, until the time comes. It'll be hard to find.




much like your weiner.




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Auto-X Fil
Hard-core CEG'er

Reged: 08/11/03
Posts: 4140
Loc: Pennsylvania
Re: new math.... new
#1306198 (Re: striker2) 08/25/06 03:10 AM

Originally posted by striker2:
HP=trap speed and tourque=ET




That is completely incorrect. Peak numbers of either tq or hp mean nothing. Power under the curve is what matters. This is significantly oversimplifying, but in general traction has the largest effect on ET and horsepower has a larger effect on trap speed.


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-Philip Maynard
'95 Contour [71 STS | Track Whore]
'97 Miata [71 ES | Boulevard Pimp]
2006 autocross results

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99cougar
Veteran CEG'er

Reged: 10/25/03
Posts: 718
Loc: south carolina
Re: new math.... new
#1306516 (Re: Auto-X Fil) 08/25/06 06:16 PM

Originally posted by Auto-X Fil:
This is significantly oversimplifying, but in general traction has the largest effect on ET and horsepower has a larger effect on trap speed.





Mix a little of both together and your golden.

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1999 Cougar V6 MTX
SVT UIM/LIM/65mm TB, I/H/E, Fidanza/SPEC III/Torsen, Koni/GC's, 19" Icon wheels w/ Pirelli rubber, NX Wet Kit



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