FYI: Cobb Stage 2.5 (VF34) Dyno Numbers

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Old 02-21-2004, 06:22 PM
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FYI: Cobb Stage 2.5 (VF34) Dyno Numbers

Take this with a small piece of crystallized sodium chloride...but:

From this thread:



The other graph is the same car with Cobb Stage 2 on the same dyno.

He has almost identical mods to my car, and I ran 215/210 at ATP's dynojet. With the same percentage gains, I would probably be somewhere around 260hp to the wheels. Party on.

:banana::banana:

</dyno number *****>
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Old 02-21-2004, 06:32 PM
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woo owoo
i have cobb stage 2, with helix up pipe and i got 218/218 at ATP

vf34 is my next mod, with injectors and pump of course
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Old 02-21-2004, 09:10 PM
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That is damn impressive! Cobb never ceases to amaze me, they are always talking about "well we are keeping the margin of safety" but 270 to the wheels with exhaust, turbo and injectors is damn impressive!

Has anyone used a vf22 with the cobb map?
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Old 02-21-2004, 09:15 PM
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I would say that you can't use the VF22. Things that build boost differently wouldn't run right. And Cobb hates VF22's...old technology, unreliable, etc. I'm paraphrasing what I read them say.

I am impressed with the AFR though... <11 after 5800rpms is pretty safe up top. There has to be a fair amount of power left both in the tune and with a bigger IC. Can't wait.
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Old 02-21-2004, 09:22 PM
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damnit I was really counting on the vf22

o yeah just on a random whim let's see....

I just mapped out my major, so from here out until I graduate:

thermodynamics ->
fluids ->
heat transfer ->
Fluid Mechanics (includes basics of turbomachinary) ->
Advanced thermoscience ->
Internal Combustion Engine and turbomachinary design ( hehe, hehe, hehe)
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Old 02-22-2004, 11:48 AM
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Originally posted by mexicanpizza
I am impressed with the AFR though... <11 after 5800rpms is pretty safe up top. There has to be a fair amount of power left both in the tune and with a bigger IC. Can't wait.
On what gas would you call that safe?

Do yourself a favor and don't run that map on your car with crappy Cal winter 91 octane.

Mike
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Old 02-22-2004, 12:36 PM
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he can always dump some naaaawww octane booster into the tank
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Old 02-22-2004, 02:26 PM
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Originally posted by MPJ Performance
On what gas would you call that safe?

Do yourself a favor and don't run that map on your car with crappy Cal winter 91 octane.

Mike
Exactly. Since the guy lives in Texas, he probably had that map tuned for 93 pump gas. That is probably why his numbers were so high. Octane = usable horsepower.

Also remember that a generic off the shelf map will run different on most cars. Some better than others.

Nice #'s anyhow!

Kurlee Daddee
(THE ORIGINAL)
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Old 02-22-2004, 03:35 PM
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oopsy

Last edited by Andrew; 02-22-2004 at 03:38 PM.
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Old 02-22-2004, 04:24 PM
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Originally posted by skywalker
I just noticed something on the dyno chart, it says

"with sprayer"

what does that mean? Extra cooling on the IC?

Anyway those are some good numbers. I am getting about the same sort of power on 91 octane, 270whp and 255 ft/lb torque with Subydude's Stage 3 package. So the numbers they have are very reasonable.

Cheers,
Bill Knose
He has a sprayer, but it wasn't on for the big turbo run. Only for the older stage 2 run.
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Old 02-22-2004, 04:46 PM
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Originally posted by MPJ Performance
On what gas would you call that safe?

Do yourself a favor and don't run that map on your car with crappy Cal winter 91 octane.

Mike
Hey Mike/Bill...thanks for the responses. It's pretty clear that I have no real idea what I'm talking about and learned everything I know about cars from reading online. ahahaha

I was under the impression that 11-ish AFR's were about the border for safety on 91. My Cobb stage 2 reflash tapered to about 11.5 after 6k. It also knocked a bit, and I heard many people comment that it was pretty lean.

This graph (which was a 93 map) is tapering to <11 by 6000rpms, and to 10.2ish by 6500rpms. I assumed that would be considered safer than the 11.5-ish by 6k.

Anyway...now that I've exposed my ignorance, you can all make fun of me.
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Old 02-23-2004, 04:04 PM
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I guess I was hoping to hear what IS safe on CA91.
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