How much boost are you guys running?

miringrains · 07-24-2013, 08:55 AM

I ran my cobb on my way to work today and the highest I hit was 18.7lb. Only thing I didn't really understand was why the numbers on the left (I assume the vacuum) remained really low...

tennis_pr0 · 07-24-2013, 08:57 AM

With cobb stage 1 aggressive +fmic i am at 18 ish

benjlv · 07-24-2013, 08:59 AM

just curious.... what do 335i's dyno at with 18psi?

JStang · 07-24-2013, 10:08 AM

Quote:

Originally Posted by benjlv

just curious.... what do 335i's dyno at with 18psi?

Depends on your mods and fuel. A car that is FBO will dyno around 360-380 whp on 93 octane on a dynojet on the OTS Stage 2+ map. A Pro-tune will get you in the 380-400 range. Of course every dyno is different and there are other variables such as temperature.

BEAR-AvHistory · 07-24-2013, 10:50 AM

17psi blocked at 18.5 max.

E90Company · 07-24-2013, 10:54 AM

Peak around 18.5psi.

Quote:

Originally Posted by benjlv

just curious.... what do 335i's dyno at with 18psi?

Depends on what timing/afr you are running.

Chefcg1 · 07-24-2013, 11:09 AM

I have procede set to max 20psi with FBO and meth. I see 21.5 boost spikes on gauge, but logs at 19.5

WLF · 07-24-2013, 11:10 AM

Peak around 7

tennis_pr0 · 07-24-2013, 11:19 AM

Can u set a peak boost with cobb?

135Pats · 07-24-2013, 11:21 AM

18.5psi peak tapering to 12.5psi at redline.

At least with Cobb, ive found the boost characteristics to be quite similar with stg1+ agg, stg2+ agg, and race/e30. A bit more peak boost and it comes on more aggressively, but the general characteristics and taper remain quite similar. Timing gets much more aggressive, on the other hand.

BQTuning · 07-24-2013, 11:53 AM

17 PSI with advanced timing

However keep in mind when IAT's get crazy hot we could see 1.5 PSI more with timing droops on flash only tunes.

nvn · 07-24-2013, 12:00 PM

18.5, here's my last log

benjlv · 07-25-2013, 09:37 AM

Quote:

Originally Posted by JStang

Depends on your mods and fuel. A car that is FBO will dyno around 360-380 whp on 93 octane on a dynojet on the OTS Stage 2+ map. A Pro-tune will get you in the 380-400 range. Of course every dyno is different and there are other variables such as temperature.

the extra few problems the 335 has seem completely tolerable then... impressive.

JStang · 07-25-2013, 09:49 AM

Quote:

Originally Posted by benjlv

the extra few problems the 335 has seem completely tolerable then... impressive.

Get a pro-tune and add some E85 and you're at 430+ all day.

135Pats · 07-25-2013, 10:00 AM

And even more WTQ. N54s play very nicely with added octane.

miringrains · 07-25-2013, 10:07 AM

Guys the numbers on the left bottom of the boost (I assume is vacuum) remained close to 0... does this mean I have a vacuum leak?

max_k20 · 07-25-2013, 10:13 AM

Arround 15-15.6 psi on cobb stg 1

07-24-2013, 08:55 AM	#1
miringrains Banned 72 Rep 702 Posts Drives: '11.5 M3 E93 Join Date: Mar 2013 Location: New York iTrader: (2)	How much boost are you guys running? I ran my cobb on my way to work today and the highest I hit was 18.7lb. Only thing I didn't really understand was why the numbers on the left (I assume the vacuum) remained really low...
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07-24-2013, 08:57 AM	#2
tennis_pr0 Captain 67 Rep 888 Posts Drives: 2--7 BMW 335i coupe Join Date: Apr 2013 Location: Philadelphia iTrader: (1)	With cobb stage 1 aggressive +fmic i am at 18 ish
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07-24-2013, 08:59 AM	#3
benjlv Private First Class 6 Rep 138 Posts Drives: 97 m3, 06 330i, '13 x3, '14 x5 Join Date: Jan 2013 Location: Metro Detroit iTrader: (1)	just curious.... what do 335i's dyno at with 18psi?
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07-24-2013, 10:50 AM	#5
BEAR-AvHistory 2020 Z4 M40i - 2022 M4C Convt 3129 Rep 5,264 Posts Drives: 2020 Z4 M40i - 2022 M4C Convrt Join Date: Jun 2011 Location: Raleigh, NC - OIB, NC iTrader: (0) Garage List 1965 COBRA (FFR rep ... [8.57] 2023 Jeep Wrangler ... [9.50] 2009 Yamaha V-Star [0.00] Cars 2-BMW, 2-FORD, ... [0.00] 2023 Ford Expeditio ... [0.00] 2020 Z4 M40i [10.00] 2022 BMW M4C [7.25] 1998 FORD Ranger 4X4 [0.00]	17psi blocked at 18.5 max. __________________ Kevin Dravit Gray, Black Leather, Moonlight Roof, Red Calipers 2022 M4C - 2020 Z4 M40i - 2023 FORD Expedition XLT Max 4X4 400BHP - 2009 V-Star - 1998 Ranger 4X4 5MT - 1965 Cobra (R) 5MT - 2023 Jeep Wrangler Sport S 6MT
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07-24-2013, 11:09 AM	#7
Chefcg1 Major 69 Rep 1,137 Posts Drives: 2008 BMW 335i Join Date: Apr 2009 Location: Mount Airy, NC iTrader: (6)	I have procede set to max 20psi with FBO and meth. I see 21.5 boost spikes on gauge, but logs at 19.5 __________________ 2008 335i coupe AW 6AT, RB Turbos, PROcede 2.5 V5, Alpina Flash, Injen Intake, VK MW DP . Helix IC, Vishnu PnP Meth(M10 nozzel), M3 sides, OEM Aero Lip, VMR V710 Midnight Blue, LUX H8, HID Fogs, M3 front bits, D2 Coilovers, Whiteline Rear Bushing inserts, Custom M3 Steering Wheel, Cyba scoops, M2 Performance Exhaust
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07-24-2013, 11:10 AM	#8
WLF Second Lieutenant 26 Rep 216 Posts Drives: n54 e92 Join Date: Feb 2013 Location: Las Vegas iTrader: (0)	Peak around 7
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07-24-2013, 11:19 AM	#9
tennis_pr0 Captain 67 Rep 888 Posts Drives: 2--7 BMW 335i coupe Join Date: Apr 2013 Location: Philadelphia iTrader: (1)	Can u set a peak boost with cobb?
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07-24-2013, 11:21 AM	#10
135Pats Major General 456 Rep 6,478 Posts Drives: A few BMWs Join Date: May 2012 Location: Maryland iTrader: (3)	18.5psi peak tapering to 12.5psi at redline. At least with Cobb, ive found the boost characteristics to be quite similar with stg1+ agg, stg2+ agg, and race/e30. A bit more peak boost and it comes on more aggressively, but the general characteristics and taper remain quite similar. Timing gets much more aggressive, on the other hand.
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07-24-2013, 11:53 AM	#11
BQTuning Banned 469 Rep 4,392 Posts Drives: 2012 Z4 sDrive35i M Sport 6MT Join Date: Nov 2010 Location: bq@bqtuning.com iTrader: (0)	17 PSI with advanced timing However keep in mind when IAT's get crazy hot we could see 1.5 PSI more with timing droops on flash only tunes. Last edited by BQTuning; 07-24-2013 at 11:58 AM..
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07-24-2013, 12:00 PM	#12
nvn Second Lieutenant 23 Rep 229 Posts Drives: 2013 335is E93 Join Date: Mar 2013 Location: San Diego, CA iTrader: (3) Garage List 2007 BMW 335i E92 [0.00]	18.5, here's my last log
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07-25-2013, 10:00 AM	#15
135Pats Major General 456 Rep 6,478 Posts Drives: A few BMWs Join Date: May 2012 Location: Maryland iTrader: (3)	And even more WTQ. N54s play very nicely with added octane. __________________ E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP F30 N55 XDrive EBII
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07-25-2013, 10:07 AM	#16
miringrains Banned 72 Rep 702 Posts Drives: '11.5 M3 E93 Join Date: Mar 2013 Location: New York iTrader: (2)	Guys the numbers on the left bottom of the boost (I assume is vacuum) remained close to 0... does this mean I have a vacuum leak?
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07-25-2013, 10:13 AM	#17
max_k20 Bavarian Love 24 Rep 263 Posts Drives: 230i xDrive Join Date: Mar 2012 Location: Quebec, Canada iTrader: (2)	Arround 15-15.6 psi on cobb stg 1 __________________ 08 FG2 Civic SI FBO - SOLD 09 E92 335i Xdrive FBO - SOLD 17 F22 230i Xdrive \| Alpine White \| Coral Red \| M-Sport \| BMS Intake \| JB4 \| 666M Rep \| M Carbon Mirrors \| Roof Rack \| Daily Driven
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