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Default Vargas N55 Turbo Upgrade Dyno - Take 2! - 12-11-2013, 03:47 PM

Hey guys,

Tony and I buried the hatched, we found the issues preventing the turbo from working as we had originally expected it would work, and I finally have some positive results to report.

I think the data speaks for itself but here are a few notes:

1) Boost with the fix is overall what I expected it would be from the start. It's able to hit ~20psi in the midrange and hold ~18psi @ 6000rpm. There is probably another psi or so of midrange boost in there with a 3.5 bar MAP sensor if we want it. It makes a little less down low which is to be expected. The gains up top are now well worth anything lost. On the street it's spooling faster now and feels great.

2) Tuning is done using JB4 ISO v5.2. We also reworked the back end flash for the E50 + meth fuel and found MBT around 9 degrees peak. The flash is loaded using a Cobb AP. Currently, they only support 2011-early 2012 models. Hopefully more models are added soon. The turbo can be used with the OEM flash but only with E85, or E85 + meth. We'll write pump gas maps for the turbo in the coming weeks for those who are using the back end flash and want to run 91 or 93.

3) With a little more boost and some other tuning tweaks 500whp might be possible with this setup. For now I'm very happy to have 120whp over stock @ 6000rpm. At 468rw this car should have enough power to run mid 11s full weight. I hope to find out this weekend.

4) This car finally lives up to it's "Dr N55" plates.
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paradoxical3 paradoxical3 is offline
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Default 12-11-2013, 03:51 PM

Thank you very much Terry. So to be clear, this can't be used without a backend flash on 93 octane?
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Default 12-11-2013, 03:52 PM

still looks a little laggy but way better congrats on the accomplishment, im sure youve been obsessing over it the past few days
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Default 12-11-2013, 03:53 PM

Quote:
Originally Posted by paradoxical3
Thank you very much Terry. So to be clear, this can't be used without a backend flash on 93 octane?
Maybe at close to stock turbo boost levels. But that would defeat the purpose.


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GetSomeE92 GetSomeE92 is offline
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Default 12-11-2013, 04:02 PM

Glad to see this got worked out.


335i Coupe: E85 BB flash, JB4 G5 ISO (map 7), DCI and 60% E85 blend: 11.7 @ 120 mph.

Former Best with JB4 (G4, map 5) DCI and 40% E85 blend: 2009 BMW 335i Coupe: 12.173 @ 109.490 MPH
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Default 12-11-2013, 04:10 PM

Awesome!
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Default 12-11-2013, 04:11 PM

Terry.
Regarding the back end flash. Are you still planning to release a flash for the DCT (N55)? I really want this turbo :-P


335i N55 DCT
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paradoxical3 paradoxical3 is offline
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Default 12-11-2013, 04:16 PM

Quote:
Originally Posted by Terry @ BMS
Maybe at close to stock turbo boost levels. But that would defeat the purpose.
Thanks.

I guess my main concern is road trips. For example, I'm driving from OH to CT this weekend. All along I80 in Pennsylvania has no E85. I would need some way to switch on the fly back to pump map compatibility, even if I am restricted to stock boost temporarily.
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Default 12-11-2013, 04:23 PM

shy of the 500 said hp goal, but not bad results either



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Default 12-11-2013, 04:26 PM

any dyno run clips Terry?



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Default 12-11-2013, 04:32 PM

Quote:
Originally Posted by paradoxical3
Thanks.

I guess my main concern is road trips. For example, I'm driving from OH to CT this weekend. All along I80 in Pennsylvania has no E85. I would need some way to switch on the fly back to pump map compatibility, even if I am restricted to stock boost temporarily.
Oh, it runs fine on map 1 or 2 on pump gas. But those power levels won't be that much higher than the stock turbo on map 1 or 2...


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eyim1988 eyim1988 is offline
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Default 12-11-2013, 04:33 PM

this is awesome. Perfect amount of power for me.. Hopefully the f series gets some love this year.
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marCOCOpuffs marCOCOpuffs is offline
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Default 12-11-2013, 04:35 PM

Are you still taking this turbo off?!? Haha! Awesome results!
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Default 12-11-2013, 04:36 PM

After days, weeks, even months of anticipation and lots of emotion and effort this is EXACTLY what I wanted to see. Mad mad mad props to you sticking to this Terry- impressive demonstration of resilience!!

So are you guys still returning the kit?...I bet Jeff is a bit more happy with these results!?
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Default 12-11-2013, 04:36 PM

Quote:
Originally Posted by marCOCOpuffs
Are you still taking this turbo off?!? Haha! Awesome results!
Hah we are keeping this thing now. I want to see an N55 run low 11s.


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Default 12-11-2013, 04:45 PM

Its only going to go up from here ;-)
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Default 12-11-2013, 04:53 PM

Maybe 10s with seat removals!?

Also, does the new setup hold boost between shifts now?
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Default 12-11-2013, 04:57 PM

Quote:
Originally Posted by iuhutch
Maybe 10s with seat removals!?

Also, does the new setup hold boost between shifts now?
So far it's great. This is a step so I didn't expect that to be an issue. We use the same no-flatline timing strategy we use with our N54 larger turbo tuning. This was a 3-4 on the low load dynojet.
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It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Default 12-11-2013, 05:08 PM

Sweet!


Matt
M235i wait list!

Old 135i 'vert
1st HPFP (881) down @ 1500 miles
2nd HPHF down @ 3000 miles
Fuel Pressure sensor down @ 8000 miles
Tail lamp replaced @ 8500 miles
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On to the next I guess!
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Default 12-11-2013, 05:15 PM

Excellent progress with positive results. I have to be honest that it's still a little disappointing it didn't reach 500hp as that has been the expected result but nonetheless, still a win in terms of development and testing! Nicely done!
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Default 12-11-2013, 05:43 PM

im excited things are fixed and decent numbers to start...will we be able to do more than 20psi? i am also interested a flash for my dct cause when i get this turbo in the next week or so im sure i will need it


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Default 12-11-2013, 05:48 PM

Awesome results. Glad to see the issue got fixed. Hopefully the N55 will hit 500whp here in the near future.



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Default 12-11-2013, 05:58 PM

Great news.
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Default 12-11-2013, 06:14 PM

Quote:
Originally Posted by VegasJD
im excited things are fixed and decent numbers to start...will we be able to do more than 20psi? i am also interested a flash for my dct cause when i get this turbo in the next week or so im sure i will need it
You will need the back end flash with the DCT for sure. This car is a step and also has the trans flash loaded.

It looks like it will make more than 20psi in the midrange if you want it. At the moment I'm going to cap it at 20psi. No idea how strong the block short is yet. Hopeful it's as strong as a factory N54 though. Which would mean 470whp is a walk in the park for it provided the tuning is solid.


Burger Motorsports
Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Default 12-11-2013, 06:25 PM

thats what i wanted to hear...maybe ill swing out your way once its installed so you can tune it and work on the dct


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