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      10-26-2011, 03:06 PM   #1
TurboBullett@Ambient Thermal Management
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Cobb Stg 2+ Aggressive Virtual Dyno

Heres the virtual dyno of my car, I had a full tank of 93 octane fuel and a passenger together we weigh 420lbs... My Mods are as follows Cobb stg 2+ aggressive, Helix FMIC, AFE elite stage 2 sealed intake, PLM catless DP's and full factory exhaust! I think an N55 catless midpipe is in order (if anyone is willing to sell theirs or trade for my N54+cash if your selling or trading in your car let me know via PM) I am pretty happy with these results in regards to air fuel ratio and boost levels as I am going to be going BIG turbos in the very near future and these parameters will make a nice baseline before ATR gets released.


Last edited by TurboBullett@Ambient Thermal Management; 10-26-2011 at 05:26 PM.
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      10-26-2011, 04:42 PM   #2
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And just what BIG turbo are you going with? I'd love to see how the motor responds to a bigger turbo. I have an N55 and although the turbo is connected to the exhaust manifold, I'd still like to see some swaps on the 1. Good luck and keep us posted!!
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      10-26-2011, 05:26 PM   #3
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Quote:
Originally Posted by ParkNuts View Post
And just what BIG turbo are you going with? I'd love to see how the motor responds to a bigger turbo. I have an N55 and although the turbo is connected to the exhaust manifold, I'd still like to see some swaps on the 1. Good luck and keep us posted!!
haha this happened on e90 post i posted a typo its supposed to read BIG Turbos. I work with helix and right now we are in prototype of doing a turbine wheel replacement for our current upgrade turbos, if all works well I will be the prototype car for the next stage of turbos. If it doesn't pan out I will use the current offerings

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      10-26-2011, 06:36 PM   #4
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I thought this tune is suppose to make over 400 whp like yucci did???
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      10-26-2011, 07:03 PM   #5
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Originally Posted by thebigragu99 View Post
I thought this tune is suppose to make over 400 whp like yucci did???
She has full exhaust and I am running bone stock with plm downpipes. I should pick up 15-20hp with the n55 mids!
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      10-26-2011, 07:08 PM   #6
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Originally Posted by TTurboBullett View Post
She has full exhaust and I am running bone stock with plm downpipes. I should pick up 15-20hp with the n55 mids!
So your telling me the n55 mids will gain 15 -20 whp??Are you expecting this with the stock muffler?
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      10-26-2011, 07:41 PM   #7
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So your telling me the n55 mids will gain 15 -20 whp??Are you expecting this with the stock muffler?
At this power level removing the rear cats should net at least 15hp. I am also going to open the auxiliary opening on the afe intake and run a 2.5" tube to the cowl as I have already made a duct that will fit in the area.
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      10-26-2011, 08:47 PM   #8
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Originally Posted by TTurboBullett View Post
At this power level removing the rear cats should net at least 15hp. I am also going to open the auxiliary opening on the afe intake and run a 2.5" tube to the cowl as I have already made a duct that will fit in the area.
I removed the rear cats and installed the fmic at the same time.I'm thinking now,most of the butt dyno gains attributed from the cat removal.That's pretty cleaver with the duct to the cowl.
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      10-27-2011, 01:49 PM   #9
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Can you pass emissions with the Cat delete?
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      10-27-2011, 02:03 PM   #10
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Can you pass emissions with the Cat delete?
In nj they use obd readiness and at this point w the cobb it doesn't throw ce lights but does not pass readiness. Cobb is working on readiness I believe, worseco RS to worse ill throw in Burger dp fixes for inspection
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      10-29-2011, 10:06 AM   #11
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Quote:
Originally Posted by thebigragu99 View Post
I removed the rear cats and installed the fmic at the same time.I'm thinking now,most of the butt dyno gains attributed from the cat removal.That's pretty cleaver with the duct to the cowl.
Just ordered the n55 mids and will redyno after install.
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      10-29-2011, 10:29 AM   #12
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Originally Posted by TTurboBullett View Post
Just ordered the n55 mids and will redyno after install.
You should have just cut out the cats.
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      10-29-2011, 11:00 AM   #13
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You should have just cut out the cats.
I have some cats and scrap metal here that will pay for the n55 mids. I was thinking of tubing the n54 cats but time is something I don't have ALOT of these days!
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      10-29-2011, 01:39 PM   #14
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I have read and heard that virtual dynos aren't very accurate...not only on bimmers, but other cars as well.
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      10-29-2011, 01:42 PM   #15
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Quote:
Originally Posted by thebigragu99 View Post
So your telling me the n55 mids will gain 15 -20 whp??Are you expecting this with the stock muffler?
+1
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      10-29-2011, 02:27 PM   #16
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Quote:
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I have read and heard that virtual dynos aren't very accurate...not only on bimmers, but other cars as well.
All dyno'd are based off of simple physics principles, as long as the correct variables are input and the test is run on a flat road with no wheel spin the results should be close to what you would see on a regular dyno! you are in the unique position to compare your Dynojet #'s to virtual dyno numbers if you get me a log I'll do the footwork for you!
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      10-29-2011, 02:29 PM   #17
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Quote:
Originally Posted by Yuchi View Post
+1
Well see I'm going to dyno right after install, at this power level I think removing the rear cats will net me close to 15hp
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      10-29-2011, 09:29 PM   #18
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Quote:
Originally Posted by TTurboBullett View Post
Well see I'm going to dyno right after install, at this power level I think removing the rear cats will net me close to 15hp
Whp or crank ?
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