E90Post
 


Lux Angel Eyes
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > **627WHP@22.5psi** Vishnu/FFTEC Single Turbo System Dyno Session #3 (PROcede Tuned)



Reply
 
Thread Tools Search this Thread
      02-22-2012, 10:37 AM   #67
JamesM3M5
Some dude
United_States
24
Rep
1,760
Posts

 
Drives: E28 M5, E92 335i
Join Date: Sep 2011
Location: Northern VA

iTrader: (0)

Quote:
Originally Posted by vasillalov View Post
Credit is due where credit is due: Very nicely done! Congrats!


Question: why is it that the torque remains constant? I mean, it is good that there is no torque drop-off, but there is no torque increase either.
There is a slight upward slope from 5500RPM and up. The efficiency of the engine is not geared toward high RPMs, so the breathing is not conducive to upward sloping torque curves. The boost level climbs to compensate, and it looks like there is indeed a slight increase in torque. This would be easier to accomplish with different cams, too.
__________________
RRT Racing
E92 335i/6MT Dinan Stage 3: intercooler, oil cooler, intake, flash, exhaust, LW dual-mass flywheel.
Vishnu PWM methanol custom trunk mount, Diffsonline 3-clutch Salisbury custom diff, Ohlins Road and Track coilovers, Vorshlag camber plates, much more...
E28 M5 w/ buncha stuff, R171 SLK350
Appreciate 0
      02-22-2012, 10:39 AM   #68
cupertinosteve
Second Lieutenant
United_States
6
Rep
213
Posts

 
Drives: BMW 335i
Join Date: Nov 2011
Location: Cupertino, Duh?

iTrader: (0)

Isn't 1 bar approx. 14.5psi?

If so (2.5 * 14.5) - 14.5 = 21.75psi?

I can't wait to test out the 6AT tranny ... BTW, i'm going 1 size smaller on the turbo, just so i can mate up the power curve where the engine likes to cruise at (around 2500-2700 rpm).
Appreciate 0
      02-22-2012, 10:40 AM   #69
alextremo
Captain
United_States
14
Rep
920
Posts

 
Drives: F10 550i
Join Date: Sep 2008
Location: USA

iTrader: (3)

Nice work Shiv, very impressive results
Appreciate 0
      02-22-2012, 10:44 AM   #70
cssnms
Brigadier General
cssnms's Avatar
United_States
77
Rep
3,180
Posts

 
Drives: 2011 BMW 335d
Join Date: Sep 2010
Location: Murland

iTrader: (4)

Wow very impressive!

I assume this is a stock transmission? I am sure this has been asked before, but what are the factory rated torque/hp limits of the N54 transmission?
Appreciate 0
      02-22-2012, 10:46 AM   #71
shiv@vishnu
Tuner
United_States
700
Rep
17,616
Posts

 
Drives: X1, 335i
Join Date: Sep 2006
Location: SF Bay, CA

iTrader: (0)

100% transmission/drivetrain. Only mod is Spec Stg2+ clutch and light flywheel.
Appreciate 0
      02-22-2012, 10:52 AM   #72
farbmw
Brigadier General
farbmw's Avatar
Trinidad_and_tobago
75
Rep
3,962
Posts

 
Drives: 2015 M4 6SPD MANUAL!
Join Date: Aug 2009
Location: Toronto

iTrader: (10)

Oh no he didn't!!!!

Good job Shiv I am prude of you!
__________________
Have BT Tool professional, will scan and clear codes on your BMW. And now I am able to code my 2011 335is and M4

Link to my M4 euro delivery! http://f80.bimmerpost.com/forums/sho....php?t=1006526
Appreciate 0
      02-22-2012, 10:55 AM   #73
R1000K3
Major
R1000K3's Avatar
United_States
16
Rep
1,313
Posts

 
Drives: 335i MT
Join Date: Jul 2009
Location: USA

iTrader: (0)

Impressive result, well done Vishnu
Appreciate 0
      02-22-2012, 11:02 AM   #74
sA x sKy
Sameet
sA x sKy's Avatar
Bangladesh
36
Rep
1,752
Posts

 
Drives: 335xi '11 -> M4 '15
Join Date: Apr 2010
Location: Long Island, New York

iTrader: (2)

Utterly speechless right now. I can't say I don't regret buying an N54 now. Kicking myself...
Appreciate 0
      02-22-2012, 11:04 AM   #75
99three
Banned
10
Rep
838
Posts

 
Drives: 993, e92, e36, F355, Z32, Jag
Join Date: Sep 2010
Location: in the 416

iTrader: (3)

Quote:
Originally Posted by dzenno View Post
Weird...timing this 60-130 looks to be in the 7s? Where's that extra power going? You should be well into the 6s...7s are RB territory...that's weird...vbox it!
+1...V box it.
Appreciate 0
      02-22-2012, 11:07 AM   #76
dzenno
Banned
Canada
114
Rep
5,883
Posts

 
Drives:
Join Date: Feb 2006

iTrader: (1)

Quote:
Originally Posted by cupertinosteve View Post
Isn't 1 bar approx. 14.5psi?

If so (2.5 * 14.5) - 14.5 = 21.75psi?

I can't wait to test out the 6AT tranny ... BTW, i'm going 1 size smaller on the turbo, just so i can mate up the power curve where the engine likes to cruise at (around 2500-2700 rpm).
Right! So how is 22.5psi being done on the stock tmap sensor?
Appreciate 0
      02-22-2012, 11:09 AM   #77
Z3->WRX->335
Major
United_States
20
Rep
1,017
Posts

 
Drives: e92 335i
Join Date: Sep 2011
Location: PA

iTrader: (1)

That turbo sounds soooooo nice. These number are what everyone was hoping for guys. Keep up the GREAT work. I want to sell my girlfriend's Vespa to buy this...funny thing is she might approve!
__________________
Crimson Red e92 335i - H&R Premium Performance Coilovers, 19" AG m359's, Cobb AP, BMS DCI, AA CP/BOV, OEM Gloss Black Grills, M3 sideskirts
Appreciate 0
      02-22-2012, 11:12 AM   #78
tcw
Captain
13
Rep
722
Posts

 
Drives: 2008 335i
Join Date: Jan 2012
Location: Atlanta, GA

iTrader: (2)

Amazing.
Appreciate 0
      02-22-2012, 11:16 AM   #79
boostd92
Captain
14
Rep
670
Posts

 
Drives: '11 E92 M-Sport
Join Date: Jun 2009
Location: Chicago, IL

iTrader: (1)

Garage List
Quote:
Originally Posted by Sleeper View Post
I'd like to see a retune and the resulting graph where boost is ramped up normally, ie. as quick as possible. I understand the reasoning behind ramping it up like a NA engine (drivetrain protection), but to me, that's not the point of a big turbo. By nature, the bigger turbo should hit full spool much later than the little twins, but still come on hard enough that you get rocked into the back of your seat. That's a high WTQ/WHP big turbo experience for me... not a slow gradual increase where peak boost hits at 6500 RPM.
I believe it's stated in the other thread that he's still working out underboost DME codes from the slower spooling big turbo. I would imagine tuning in the lower third/quarter of the RPM range is delayed until they can keep the DME happy.

That being said, I remember being a big part of the MR2 Turbo scene years ago and the big measure of "spool" and how quick a turbo could make torque was the RPM where the engine would reach 200wtq. Given, that motor was 2.0L turbo, mine made 200wtq@ 2850rpm and was an absolute blast to drive.

Vishnu's car makes 200wtq@2400 and another 200wtq more in just 1000rpm. Not too shabby for not even touching/optimizing that rpm band.
Appreciate 0
      02-22-2012, 11:18 AM   #80
mithiral67
That guy
mithiral67's Avatar
68
Rep
5,724
Posts

 
Drives: 2015 Cayman GTS
Join Date: Jun 2008
Location: Chicago Burbs

iTrader: (4)

Garage List
So over 120whp from pump to meth? Damn thats a difference. Crank HP at over 730hp is gross all day long.
Appreciate 0
      02-22-2012, 11:23 AM   #81
Kalud
Lieutenant
Kalud's Avatar
10
Rep
582
Posts

 
Drives: e92 335i
Join Date: Jun 2010
Location: Canada

iTrader: (0)

Quote:
Originally Posted by dzenno View Post
Right! So how is 22.5psi being done on the stock tmap sensor?
Maybe the 3bar unit is already there...

Sounds pretty easy for him as he can get the 3bar value in and give the DME original "expected" values...

Quote:
Originally Posted by shiv@vishnu View Post
Yep.. there is a 3bar MAPS sensor input on the Rev3. We will also consider just swapping out the factory 2.5bar sensor for a direct replacement 3bar unit. Pretty easy stuff to do. And judging by how quickly the engine wakes up when with each additional psi of boost, I'm also looking forward to seeing what this setup does at 23-24psi. I suspect we will see 600whp. And with still another 100+hp of overhead. I can't tell you guys how much of a blast it is to drive this car. Not just in terms of power but how smoothly and effortlessly the power is delivered. It makes running upgraded twins feel and sound very "coarse" in comparison.
Appreciate 0
      02-22-2012, 11:45 AM   #82
Strongbark
Brigadier General
Strongbark's Avatar
No_Country
88
Rep
3,686
Posts

 
Drives: 2015 M4 on order
Join Date: Jan 2008
Location: Earth

iTrader: (1)

I may need to pick up an '07 335i as a second car now....
__________________
Strongbark

http://www.1addicts.com/forums/signaturepics/sigpic32890_2.gif
'13 Mini GP #485 of 500 For Sale
Appreciate 0
      02-22-2012, 11:49 AM   #83
shiv@vishnu
Tuner
United_States
700
Rep
17,616
Posts

 
Drives: X1, 335i
Join Date: Sep 2006
Location: SF Bay, CA

iTrader: (0)

Here's a fun dyno comparison between the single turbo and a stock 2007 6MT (only DCIs). Same dyno, similar conditions:



Yes, at 6800RPM, the single turbo makes 400WHP MORE than the stock car
Appreciate 0
      02-22-2012, 11:50 AM   #84
son_of_siggy
Lieutenant
5
Rep
435
Posts

 
Drives: CTS-V
Join Date: Jul 2011
Location: United States

iTrader: (0)

Quote:
Originally Posted by dzenno View Post
Right! So how is 22.5psi being done on the stock tmap sensor?
Jeeze, give him some time to answer. You've brought this up 3-4 times and Shiv only started this thread today. It would be nice to see one Vishnu related post where you don't covertly try and take a steaming dump in it, and then mask it with smiley faces and kudos.

Time will reveal all. This is very exciting news and only heightens the anticipation of the products release. That Mexico run was fun to watch!
Appreciate 0
      02-22-2012, 11:56 AM   #85
CPWINCH
Brigadier General
CPWINCH's Avatar
United_States
39
Rep
3,562
Posts

 
Drives: F32 4 Series
Join Date: May 2010
Location: Los Angeles

iTrader: (5)

Quote:
Originally Posted by sA x sKy View Post
Utterly speechless right now. I can't say I don't regret buying an N54 now. Kicking myself...
hes throwing it on an N55 next!
well thats the plan anyway lol
__________________
Follow my BMW instagram @Bmwmodification Let me know you are from bimmerpost and i'll follow back
Appreciate 0
      02-22-2012, 11:56 AM   #86
SIKH335
Banned
17
Rep
969
Posts

 
Drives: 2007 335i Coupe
Join Date: May 2011
Location: SF Bay Area

iTrader: (6)

Garage List
2007 E92 335i  [0.50]
Insane

Quote:
Originally Posted by shiv@vishnu View Post
Here's a fun dyno comparison between the single turbo and a stock 2007 6MT (only DCIs). Same dyno, similar conditions:



Yes, at 6800RPM, the single turbo makes 400WHP MORE than the stock car
Appreciate 0
      02-22-2012, 11:58 AM   #87
sA x sKy
Sameet
sA x sKy's Avatar
Bangladesh
36
Rep
1,752
Posts

 
Drives: 335xi '11 -> M4 '15
Join Date: Apr 2010
Location: Long Island, New York

iTrader: (2)

Quote:
Originally Posted by CPWINCH View Post
hes throwing it on an N55 next!
well thats the plan anyway lol
I really hope you're not messing with my head.
Appreciate 0
      02-22-2012, 11:58 AM   #88
Xander
I'm new
Xander's Avatar
United_States
2
Rep
248
Posts

 
Drives: 997 carrera, Golf R
Join Date: Jan 2009
Location: Buffalo, NY

iTrader: (4)

Great work! Can't wait to see race gas numbers.

X...
__________________
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 06:54 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST