E90Post
 


TNT Racewerks
 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > what happened to my 15hp?



Reply
 
Thread Tools Search this Thread
      02-22-2013, 07:46 PM   #1
mblaucoupe135
Lieutenant
 
Drives: 2012 335is
Join Date: Jan 2010
Location: Littleton, CO

Posts: 411
iTrader: (2)

what happened to my 15hp?

I have a 335is, which I love. However, I was curious about one thing that I was hoping someone could shed some light on for me. The car has the same n54 engine as the 1M and z4 35is, but both those cars have 335hp and mine only has 320hp. So I'm curious as to why the difference in hp?
__________________
2012 335is coupe, alpine white with red leather interior
mblaucoupe135 is offline  
0
Reply With Quote
      02-22-2013, 07:59 PM   #2
CallMeAl
Private
 
Drives: 335xi Dinan Stage 2
Join Date: Feb 2013
Location: Colorado

Posts: 71
iTrader: (0)

Not sure why they do this but it would be related to the ECU. If you get a dinan Cobb or another ECU chip you can get a lot of HP out of it.
__________________
2007 335xi / Dinan Stage 2 / Sparkling Metallic Grey / 6spd / More Upgrades to come
CallMeAl is offline  
0
Reply With Quote
      02-22-2013, 09:27 PM   #3
ErvGotti
Major
 
Drives: 2008 135i 6MT
Join Date: Jul 2010
Location: Bury St Edmunds UK

Posts: 1,166
iTrader: (5)

Garage List
2008 135i  [3.00]
More than likely a marketing thing for BMW. Same motors they're more than likely running a more aggressive timing curve or slightly more boost. Get a tune and call it a day.
ErvGotti is offline  
0
Reply With Quote
      02-22-2013, 09:32 PM   #4
BEAR-AvHistory
2014 435M-Sport/MPPK
 
BEAR-AvHistory's Avatar
 
Drives: 2014 435M-Sport MPPK
Join Date: Jun 2011
Location: NC - USA

Posts: 2,189
iTrader: (0)

DUH Originally posted this to the wrong thread:

My 335is dynoed at 319whp on a DynoJet with 93 octane against the 320BHP that BMW advertises it at. Saw the 1M dyno at 331whp against the 335BHP that BMW uses. So the 1M is stronger & in proportion to the advertised spread. It would be a bit more of a tune in the ECU because just about everything else is the same.

Main thing is both numbers are bogus because using the BHP scale they both are underrated quite a bit.
__________________
Kevin

2014 435M-Sport MPPK - 2013 135is Cab 6MT - 2009 V-Star - 2009 Ford Expedition EL 4X4 - 2003 Xterra 4X4 - 1998 Ranger 4X4 - FFR Cobra MK-IV work in progress
BEAR-AvHistory is offline  
0
Reply With Quote
      02-22-2013, 09:42 PM   #5
BV335
First Lieutenant
 
BV335's Avatar
 
Drives: BMW 335I Coupe
Join Date: May 2012
Location: CA

Posts: 375
iTrader: (1)

A bit more aggressive tune in those cars. Like others said, you could make that 335IS very fast with Cobb or JB4. Opening a can of worms tuning though.
BV335 is offline  
0
Reply With Quote
      02-22-2013, 09:48 PM   #6
Verbatim
Colonel
 
Verbatim's Avatar
 
Drives: 2008 335i
Join Date: Sep 2010
Location: at the repair shop

Posts: 2,555
iTrader: (0)

Garage List
2008 BMW 335i  [5.00]
Maybe the cars are dynoing like 60bhp above their bhp spec because of the boost function?
(I'm a newb with the whole boost function)
__________________

2008 BMW 335i Sedan | Sparkling Graphite | Sport | Premium | Navigation | Comfort Access | Logic7
Golf Tee | M3 Spoiler | LED Angel Eyes | 5000k Fogs | Resonator Delete | Black Kidney Grills | Black Finisher Rods | 35%/18% Tint |12mm/20mm (F/R) Spacers | Black Lines


Verbatim is offline   United_States
0
Reply With Quote
      02-22-2013, 10:26 PM   #7
fun2drive
BMWCCA 149159
 
fun2drive's Avatar
 
Drives: E93 335 Vert E36 M3/4
Join Date: Jul 2006
Location: Florida Panhandle

Posts: 590
iTrader: (1)

BMW always specs their engines as - 0% to + 5% HP. Many times these engines run well above that.
In the case of the 1M etc it is purely a more aggressive tune.
Well under the potential of this engine...
fun2drive is offline   United_States
0
Reply With Quote
      02-22-2013, 10:31 PM   #8
NvTwist
New to BMW
 
NvTwist's Avatar
 
Drives: '11 335is DCT
Join Date: Nov 2010
Location: Las Vegas, NV.

Posts: 64
iTrader: (0)

The 15HP difference between iS & Z4 is due to the increased under hood clearance in the Z4, it allows for a larger & easier breathing intake. The Engine, ECU & OverBoost are the same in both. Of course a slight diff in software to take advantage of that increased air flow thats avail.
__________________
2011 335is Coupe - S Gray/Red. Prem, Conv & Cold Weather Pkg. DCT, Navi, Harman w/Sat, Ipod & USB, Mats, Tint. MSRP $62,225 - Paid $57,449 OTD
NvTwist is offline   United_States
0
Reply With Quote
      02-22-2013, 11:05 PM   #9
mblaucoupe135
Lieutenant
 
Drives: 2012 335is
Join Date: Jan 2010
Location: Littleton, CO

Posts: 411
iTrader: (2)

Thanks for all the responses so far. I know i could do an aftermarket tune to get more power, it just seems like the least bmw could have done is make it the same as the 1m and z4 35is. I could understand the 1m having more cause it's an m car, but not the z.

I'm thinking i should write a letter to bmw asking for my 15hp! Lol
__________________
2012 335is coupe, alpine white with red leather interior
mblaucoupe135 is offline  
0
Reply With Quote
      02-23-2013, 07:25 AM   #10
Canada Jeff
Private First Class
 
Canada Jeff's Avatar
 
Drives: 2007 335i coupe
Join Date: Dec 2012
Location: Ottawa

Posts: 133
iTrader: (0)

I love my JB4, I can turn it on or off thought the steering wheel. it's like an "M" button for non M cars :-) ! Huge difference. turns on or off in less than 5 seconds.
Canada Jeff is offline  
0
Reply With Quote
      02-23-2013, 09:15 AM   #11
Nonecure
Second Lieutenant
 
Nonecure's Avatar
 
Drives: 2009 335xi E90 LCI
Join Date: Nov 2012
Location: Dayton, Ohio

Posts: 209
iTrader: (1)

Why would you ever want to turn off a tune? If you turn the tune off and on, wont that make the ECU have to keep relearning?

I personally have Cobb and love it. I have heard good things from JB4 as well. I just don't see the point in turning it on and off.
Nonecure is offline   United_States
0
Reply With Quote
      02-23-2013, 11:02 AM   #12
mblaucoupe135
Lieutenant
 
Drives: 2012 335is
Join Date: Jan 2010
Location: Littleton, CO

Posts: 411
iTrader: (2)

My car is leased which is why I am concerned about getting a tune and haven't done it yet.
__________________
2012 335is coupe, alpine white with red leather interior
mblaucoupe135 is offline  
0
Reply With Quote
      02-23-2013, 11:13 AM   #13
BEAR-AvHistory
2014 435M-Sport/MPPK
 
BEAR-AvHistory's Avatar
 
Drives: 2014 435M-Sport MPPK
Join Date: Jun 2011
Location: NC - USA

Posts: 2,189
iTrader: (0)

One reason to shut it down is a road trip. I am running 96 octane as a DD with a custom 335is Map6 (set boost etc. by RPM). If I take a trip & gas quality goes down I can hit the steering wheel & go back to Map 0 stock or Map5 (autolearn). Map 0 is also good for a quick switch for a dealer visit or state emissions testing.

If its a long trip & I want to go into cheapo mode Map 8 will cut out the turbos for an MPG Map. No relearn going back to Map 6. Map 5 would take at least 3-4 WOT pulls in 3rd gear to get its memory back. Map 5 is also the Map to use with an E85 mix up to about 50% although 35% is recommended for my car.

Is the on the fly selection necessary NO - Is it nice to have YES

Both systems are very good for a daily driver & its hard to go wrong with either one. My choice was based on overall features available & customer service both of which lived up to my expectations.

The things I use the most are the system ready lights, Gauge 50% throttle hijack for Water Temp & Boost Pressure + the shift lights which I set at 6250rpm.
__________________
Kevin

2014 435M-Sport MPPK - 2013 135is Cab 6MT - 2009 V-Star - 2009 Ford Expedition EL 4X4 - 2003 Xterra 4X4 - 1998 Ranger 4X4 - FFR Cobra MK-IV work in progress

Last edited by BEAR-AvHistory; 02-23-2013 at 11:24 AM.
BEAR-AvHistory is offline  
0
Reply With Quote
      02-23-2013, 12:02 PM   #14
Nonecure
Second Lieutenant
 
Nonecure's Avatar
 
Drives: 2009 335xi E90 LCI
Join Date: Nov 2012
Location: Dayton, Ohio

Posts: 209
iTrader: (1)

OK, that makes perfect sense. I just run a 93 octane map and don't worry about it, and I don't use my car for long distance traveling. For higher boost maps and traveling, your setup sounds really good.
Nonecure is offline   United_States
0
Reply With Quote
      02-23-2013, 12:07 PM   #15
Nonecure
Second Lieutenant
 
Nonecure's Avatar
 
Drives: 2009 335xi E90 LCI
Join Date: Nov 2012
Location: Dayton, Ohio

Posts: 209
iTrader: (1)

Quote:
Originally Posted by mblaucoupe135 View Post
My car is leased which is why I am concerned about getting a tune and haven't done it yet.
The Cobb will let you easily remove the map when you take your car in to be serviced. Also if you turn your car in after the lease, you can pull the Cobb map off and use it on another car, or sell it. The chip method works too, but you have to physically remove it each time you take your car in.
Nonecure is offline   United_States
0
Reply With Quote
      02-23-2013, 12:07 PM   #16
John 070
Lieutenant General
 
Drives: 335i cpe
Join Date: Oct 2006
Location: ZSP/ZPP/ZCW

Posts: 11,424
iTrader: (0)

Quote:
Originally Posted by BEAR-AvHistory View Post
One reason to shut it down is a road trip. I am running 96 octane as a DD with a custom 335is Map6 (set boost etc. by RPM). If I take a trip & gas quality goes down I can hit the steering wheel & go back to Map 0 stock or Map5 (autolearn). Map 0 is also good for a quick switch for a dealer visit or state emissions testing.

If its a long trip & I want to go into cheapo mode Map 8 will cut out the turbos for an MPG Map. No relearn going back to Map 6. Map 5 would take at least 3-4 WOT pulls in 3rd gear to get its memory back. Map 5 is also the Map to use with an E85 mix up to about 50% although 35% is recommended for my car.

Is the on the fly selection necessary NO - Is it nice to have YES

Both systems are very good for a daily driver & its hard to go wrong with either one. My choice was based on overall features available & customer service both of which lived up to my expectations.

The things I use the most are the system ready lights, Gauge 50% throttle hijack for Water Temp & Boost Pressure + the shift lights which I set at 6250rpm.
Totally cool stuff......sometimes I wonder if stations are really pumping 93 when you pay for it....one day there will be random octane testing.....
John 070 is offline  
0
Reply With Quote
      02-23-2013, 12:38 PM   #17
shanecarmaster1
Lieutenant
 
shanecarmaster1's Avatar
 
Drives: e90 325i, F01 750Li, e38 740i
Join Date: Aug 2009
Location: New Jersey

Posts: 531
iTrader: (0)

Quote:
Originally Posted by BEAR-AvHistory View Post
If its a long trip & I want to go into cheapo mode Map 8 will cut out the turbos for an MPG Map.
Hmm never heard of an N54/55 doing that. Does that mean it accelerates and feels like a 330i or something? How does it feel?
__________________
A BMW can be described in one simple, yet true statement, "From the outside you don't understand, from the inside you can't explain." How true is THAT?!
shanecarmaster1 is offline   United_States
0
Reply With Quote
      02-23-2013, 01:56 PM   #18
mblaucoupe135
Lieutenant
 
Drives: 2012 335is
Join Date: Jan 2010
Location: Littleton, CO

Posts: 411
iTrader: (2)

Quote:
Originally Posted by Nonecure
Quote:
Originally Posted by mblaucoupe135 View Post
My car is leased which is why I am concerned about getting a tune and haven't done it yet.
The Cobb will let you easily remove the map when you take your car in to be serviced. Also if you turn your car in after the lease, you can pull the Cobb map off and use it on another car, or sell it. The chip method works too, but you have to physically remove it each time you take your car in.
That sounds cool, but has it been confirmed that there is no way the dealer can tell you had aftermarket software on the car?
__________________
2012 335is coupe, alpine white with red leather interior
mblaucoupe135 is offline  
0
Reply With Quote
      02-23-2013, 03:48 PM   #19
Canada Jeff
Private First Class
 
Canada Jeff's Avatar
 
Drives: 2007 335i coupe
Join Date: Dec 2012
Location: Ottawa

Posts: 133
iTrader: (0)

Quote:
Originally Posted by Nonecure View Post
Why would you ever want to turn off a tune? If you turn the tune off and on, wont that make the ECU have to keep relearning?

I personally have Cobb and love it. I have heard good things from JB4 as well. I just don't see the point in turning it on and off.
I actualy forgot about the learning part of the chip. I have been turning it off because I didn't want to put any more stress on the turbos when I didn't need it. But, I just signed an after market warranty contract yesterday so I may aswell leave it on all the time. except when something fails and it needs service
Canada Jeff is offline  
0
Reply With Quote
      02-23-2013, 03:52 PM   #20
Envuks
Captain
 
Envuks's Avatar
 
Drives: '08 e92 335xi
Join Date: Apr 2012
Location: MA

Posts: 718
iTrader: (2)

It was never yours to begin with.... Get a tune!
__________________
Jet black e92 6mt 335xi:

18" BBS RGRs, KW v1, ESS Stage 2 flash, VRSF 7" FMIC, VRSF downpipes, JG Mods m-tech front, mtec V3 AEs, BMS OCC, hardwired valentine 1, p3cars gauge, amber delete, sport seats, factory oil cooler.
Envuks is offline  
0
Reply With Quote
      02-23-2013, 04:51 PM   #21
SaMaster14
Major
 
SaMaster14's Avatar
 
Drives: 2012 BMW E92 335iS
Join Date: Mar 2012
Location: Los Angeles, CA / Baltimore, MD

Posts: 1,418
iTrader: (0)

Garage List
2012 BMW 335iS  [3.95]
Send a message via AIM to SaMaster14 Send a message via Skype™ to SaMaster14
Quote:
Originally Posted by mblaucoupe135 View Post
I have a 335is, which I love. However, I was curious about one thing that I was hoping someone could shed some light on for me. The car has the same n54 engine as the 1M and z4 35is, but both those cars have 335hp and mine only has 320hp. So I'm curious as to why the difference in hp?
The pre 2010 335i also has the N54, but it only puts out 300hp and 300lb/ft. It's all about tuning. The N54 is capable of putting out around 380-400hp just by messing with the plugs. BMW can't have their high end base models outperforming their M cars now can they?
__________________
~2012 BMW 335iS coupe MINERAL WHITE/CORAL RED

http://instagram.com/samaster14/
SaMaster14 is offline   United_States
0
Reply With Quote
      02-23-2013, 08:00 PM   #22
NoTempoLimitN54
Second Lieutenant
 
NoTempoLimitN54's Avatar
 
Drives: E92 335i
Join Date: Sep 2012
Location: Los Angeles, CA

Posts: 219
iTrader: (1)

Garage List
Quote:
Originally Posted by NvTwist View Post
The 15HP difference between iS & Z4 is due to the increased under hood clearance in the Z4, it allows for a larger & easier breathing intake. The Engine, ECU & OverBoost are the same in both. Of course a slight diff in software to take advantage of that increased air flow thats avail.
I've read that the N54 "S" in the 1M has special downpipes with freer flowing cats. Apparently, these can be retrofitted onto other N54 cars.

I think there may be a temperature issue with the Z435is as well. The large underhood cavity giving better cooling.

I'd be suprised if there are any major differences in the software between the 335is, Z435is and 1M (and possibly the N54 PPK software). Remember the engine+software has to get certified for emissions which is very costly, especially in the U.S.

I'm sure BMW would want to get maximum return on investment by using the software in three different models with the same engine.

Anybody got any knowledge to the contrary?
__________________

2009 335i 6MT (E92/N54), Black Sapphire / Shadowline (Individual 760) / Black Dakota Leather, ZSP, ZCW, 6FL, PDC, no Nav/iDrive, 19 x 8.5 / 19 x 9.5 VMR VB3 in Hyper Black, Pilot Super Sport 235/35 fr 265/30 rr, M3 control arms + tension links (fr)
NoTempoLimitN54 is offline   United_States
0
Reply With Quote
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 04:26 AM.




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