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Old Oct 17, 2012 | 03:41 PM
  #16  
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Originally Posted by blackenedwings
Hmm, tscompusa, I thought the VD mode in Tephra was Dynojet equivalent? I don't have a screenshot of the output from that, but it was identical to my plot. I know that Mustang dynos will always read lower than a Dynapack if nothing else because of the wheels and possible slip.

In any case, I've only had the car dynoed on the same dyno since I originally got it, I guess its been dynoed 4 times on this same setup and I've seen steady gains the whole way through.

I started at 330/300, then 390/300, then 407/368, and now 444/376. My next step will probably be with 2.3L and 93 octane.
the only way to get a true comparison on virtual dyno with dynojet is to get the car on a really flat road.. like the interstate and log it.. only log tps, rpm, and if you want data.. wideband, boost, timing, knock, and nothing else or you will slow the logger down and the result will be inaccurate due to RPM skipping / scrambling. (logger resolution diminishes)

use virtual dyno 1.2.0 for best accuracy. want 100% accuracy? run it down cecil in 3rd gear and log it in virtual dyno.

like i said though.. at the end of the day if you're happy with the car thats all that matters.
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Old Oct 18, 2012 | 01:51 AM
  #17  
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VD has 3 modes.
Mustang = CF 0.95 = reads lowest
Virtual Dyno = CF 1 = reads middle
Dynojet = CF 1.09 = reads highest

VD defaults to virtual dyno mode. If you want to run in dyno jet or mustang mode you need to select it.

Good solid results though, surprised you are going 2.3L though or dont you like the feeling of the 2L? ie how it revs, makes power etc.
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Old Oct 18, 2012 | 04:11 AM
  #18  
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Did you mention boost levels anywhere? I might have missed it. I'm not surprised at all with the big gains losing the stock O2 and the 2.5" downpipe. Thoses were big restrictions even if you had a stock turbo.
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Old Oct 18, 2012 | 04:47 AM
  #19  
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Originally Posted by blackenedwings
I thought the VD mode in Tephra was Dynojet equivalent?
Vd is not part of Tephra. Its a standalone program that uses logs from many different loggers to estimate horsepower. In Dynojet mode, it "reads" like a Dynojet.

Originally Posted by EvocentriK
VD has 3 modes.
Mustang = CF 0.95 = reads lowest
Virtual Dyno = CF 1 = reads middle
Dynojet = CF 1.09 = reads highest

VD defaults to virtual dyno mode. If you want to run in dyno jet or mustang mode you need to select it.
VD defaults with Dynojet mode. Thats how its always been. It does remember settings though, so it will open to whatever mode you had selected last.
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Old Oct 18, 2012 | 09:32 AM
  #20  
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Originally Posted by EVO8LTW
Did you mention boost levels anywhere? I might have missed it. I'm not surprised at all with the big gains losing the stock O2 and the 2.5" downpipe. Thoses were big restrictions even if you had a stock turbo.
It was an HKS 2.5'' downpipe, but the o2 housing was not stock apparently. I think it was an Invidia "high flow" o2 housing.

As far as the 2.3L, the main thought behind that is for running a larger turbo down the line on E85, the extra displacement will net me more torque and faster spool. I currently redline at 7600 rpms, so a safe limit on a built 2.3L should be 7800 rpms, so I would gain a smidge of revs if I need it, and a ton of torque and spool. Sure I could run more revs on a built 2.0L, but my power band is plenty wide. I just don't see the benefit for road racing of a smaller displacement motor.

That being said, my ideal would be a 2.2L Cosworth billet stroker kit, but I just don't see the advantage being worth the cost over a 100mm crank, Wiseco pistons and Cosworth rods.
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Old Oct 18, 2012 | 09:37 AM
  #21  
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Originally Posted by blackenedwings
It was an HKS 2.5'' downpipe, but the o2 housing was not stock apparently. I think it was an Invidia "high flow" o2 housing.

As far as the 2.3L, the main thought behind that is for running a larger turbo down the line on E85, the extra displacement will net me more torque and faster spool. I currently redline at 7600 rpms, so a safe limit on a built 2.3L should be 7800 rpms, so I would gain a smidge of revs if I need it, and a ton of torque and spool. Sure I could run more revs on a built 2.0L, but my power band is plenty wide. I just don't see the benefit for road racing of a smaller displacement motor.

That being said, my ideal would be a 2.2L Cosworth billet stroker kit, but I just don't see the advantage being worth the cost over a 100mm crank, Wiseco pistons and Cosworth rods.
stroker with anti surge cover and so forth would be a blast-

I like the 94mm crank setup--

cb
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Old Oct 18, 2012 | 12:52 PM
  #22  
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Originally Posted by CBRD
stroker with anti surge cover and so forth would be a blast-

I like the 94mm crank setup--

cb
Yeah! I'm thinking a 2.3L with anti-surge cover will be happening by next season. That should be a lot of useable power, and going to E85 and turning up the wick a bit would put me about where I want. Down the line I might move to one of your full turbo kits... I could not believe the results for Boltz setup, it looks beastly. I might go with a slightly smaller turbo though.
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