E90Post
 


TNT Racewerks
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > CXRacing FMIC - Dyno Results



Reply
 
Thread Tools Search this Thread
      06-14-2011, 08:30 PM   #1
The Ghost
Reborn
 
The Ghost's Avatar
 
Drives: 335i
Join Date: Jun 2011
Location: USA

Posts: 1,079
iTrader: (1)

CXRacing FMIC - Dyno Results

After reading the many Big Tom and CXRacing threads, I decided to install the CXRacing FMIC and do my own tests.

I dyno'd the car with only Vishnu PROcede with the off the shelf v5 maps (13psi peak) on Weds.

I susequently installed the CXRacing FMIC and nothing else, then re-dyno'd 6 days later on the same dyno, same time of day, same temps (90F shop temps). I used a 2.5" piping kit from ebay (comes with silicone couplers, tons of bends, and t-bolt clamps). The kit plus the FMIC was $270 shipped.

As you can see while the peak HP went up 10whp, the area under the curve is different. There is a consistent ~10whp gain from about 5300rpm to redline, with a similar tq gain. There is also a little positive tq hump earlier which I cannot explain. From what I've seen, this is consistent with other name brand FMICs at this power/boost level. I wonder how it would do at 16psi.

*Although the below graphs show 297hp/307hp, the best pulls were 300whp/342wtq with stock IC and 307whp/341 with CX. The runs varied by about 3hp/tq and I compared the two mid ones.

The logs are in this order:
  • Log of stock FMIC Dyno
  • Log of CXRacing FMIX Dyno
  • Log of Road 3rd gear pull with CXRacing FMIC

The fan in the shop is HORRIBLE and is what you can buy at Walmart for $40. True gains on the street should be great. As you can see in the road graph, I typically run a good 2-3 degrees more timing on the road than on the dyno.

I hope this data is useful to the group.

-TG

[edit] Had steel brackets welded to core and bolted to bumper beam. Added pic.
Attached Images
       

Last edited by The Ghost; 10-22-2011 at 08:49 PM.
The Ghost is offline   United_States
0
Reply With Quote
      06-14-2011, 08:34 PM   #2
Bakeme521
Some say...
 
Bakeme521's Avatar
 
Drives: Fresh
Join Date: Mar 2010
Location: Baton Rouge n NOLA

Posts: 4,269
iTrader: (12)

Garage List
2007 BMW 335i  [4.04]
Good job man, just proves once again if you put the work in its a good small purchase and DIY.
__________________

I have exhaust and an intake...
Bakeme521 is offline   United_States
0
Reply With Quote
      06-14-2011, 08:39 PM   #3
Alessandro
Major
 
Alessandro's Avatar
 
Drives: E92 335i 08 ret, 335is 11
Join Date: Mar 2008
Location: Canada

Posts: 1,007
iTrader: (8)

Garage List
2011 335is  [4.75]
Send a message via Skype™ to Alessandro
well done thx for sharing
Alessandro is offline   Serbia
0
Reply With Quote
      06-14-2011, 09:03 PM   #4
Rotorocious
Major
 
Rotorocious's Avatar
 
Drives: 335i
Join Date: May 2010
Location: Florida

Posts: 1,448
iTrader: (3)

Well done!
Rotorocious is online now  
0
Reply With Quote
      06-14-2011, 09:19 PM   #5
mycoupe
Banned
 
Drives: 07 335i coupe 6spd
Join Date: Dec 2009
Location: cincinnati, Ohio

Posts: 1,499
iTrader: (5)

is it just me or do those numbers seem kind of low???
mycoupe is offline  
0
Reply With Quote
      06-14-2011, 09:25 PM   #6
Booztd 3
Private
 
Drives: 2007 335i Sedan
Join Date: Jun 2011
Location: Peoria, IL

Posts: 72
iTrader: (4)

I'd take a look at that big mis-fire around 3600rpms.....something isnt right there....
__________________
Work: '07 335i Sedan
Play: '90 300ZX (10.3@140mph)
And For Giggles: 06' R1
Booztd 3 is offline   United_States
0
Reply With Quote
      06-14-2011, 09:39 PM   #7
JsTech
Captain
 
JsTech's Avatar
 
Drives: AW 2008 E92 335i
Join Date: Dec 2009
Location: Area51

Posts: 805
iTrader: (10)

Nice! Thanks for taking the time doing this. I was curious about this intercooler awhile back. Really good gain for the price!
__________________
JsTech is offline   Thailand
0
Reply With Quote
      06-14-2011, 09:59 PM   #8
mycoupe
Banned
 
Drives: 07 335i coupe 6spd
Join Date: Dec 2009
Location: cincinnati, Ohio

Posts: 1,499
iTrader: (5)

Quote:
Originally Posted by Booztd 3 View Post
I'd take a look at that big mis-fire around 3600rpms.....something isnt right there....
looks like an ignition drop of about 6 degrees if you check the second to last graph.
mycoupe is offline  
0
Reply With Quote
      06-14-2011, 10:33 PM   #9
secretsquirrel
Colonel
 
secretsquirrel's Avatar
 
Drives: 335i nFifty4LiFe
Join Date: Dec 2010
Location: land of the squirrel

Posts: 2,073
iTrader: (2)

can you post specifically which 2.5 coupler kit you purchased? Thanks.
secretsquirrel is offline  
0
Reply With Quote
      06-14-2011, 10:34 PM   #10
The Ghost
Reborn
 
The Ghost's Avatar
 
Drives: 335i
Join Date: Jun 2011
Location: USA

Posts: 1,079
iTrader: (1)

Quote:
Originally Posted by mycoupe View Post
is it just me or do those numbers seem kind of low???
What should they be? While there is temp/humidity correction, the car still runs less timing on the dyno than the street. I thought 300/342 with chip only was typical, is it not?

Quote:
Originally Posted by Booztd 3 View Post
I'd take a look at that big mis-fire around 3600rpms.....something isnt right there....
Right, dip is there for all of my pre/post runs. If anyone can help explain this, I'd appreciate it.
The Ghost is offline   United_States
0
Reply With Quote
      06-14-2011, 10:38 PM   #11
Booztd 3
Private
 
Drives: 2007 335i Sedan
Join Date: Jun 2011
Location: Peoria, IL

Posts: 72
iTrader: (4)

Quote:
Originally Posted by mycoupe View Post
looks like an ignition drop of about 6 degrees if you check the second to last graph.
For some reason none of those charts loaded when I initially viewed.

I do see the ignition drop, but directly above it, I also see some (what I believe is) correction in the inverse

I can understand pulling the timing right there at pk tq but that is a pretty drastic ramp rate (which is obvious by observing the tq reading)
__________________
Work: '07 335i Sedan
Play: '90 300ZX (10.3@140mph)
And For Giggles: 06' R1
Booztd 3 is offline   United_States
0
Reply With Quote
      06-14-2011, 10:49 PM   #12
rader1
Banned
 
Drives: Cobb Stage 2+ 135i
Join Date: Apr 2011
Location: Roanoke, VA

Posts: 2,197
iTrader: (0)

If its the IC in the first pick next to the stock IC. That's a huge difference size wise, what/how much did you have to cut to get it to fit?
rader1 is offline  
0
Reply With Quote
      06-14-2011, 11:06 PM   #13
The Ghost
Reborn
 
The Ghost's Avatar
 
Drives: 335i
Join Date: Jun 2011
Location: USA

Posts: 1,079
iTrader: (1)

Quote:
Originally Posted by Booztd 3 View Post
For some reason none of those charts loaded when I initially viewed.

I do see the ignition drop, but directly above it, I also see some (what I believe is) correction in the inverse

I can understand pulling the timing right there at pk tq but that is a pretty drastic ramp rate (which is obvious by observing the tq reading)
I must be missing the drop.

I've attached two graphs showing the timing details at ~3600rpm, the first with stock IC and the second with upgraded the intercooler (both dynos have the dip, but I included both none the less).
Attached Images
  

Last edited by The Ghost; 06-14-2011 at 11:16 PM.
The Ghost is offline   United_States
0
Reply With Quote
      06-14-2011, 11:11 PM   #14
Joshboody
Lieutenant Colonel
 
Drives: pickemuptruck
Join Date: Jul 2009
Location: Phoenix, AZ

Posts: 1,708
iTrader: (7)

Timing looks good, nothing to worry about. Not sure about the dyno dips... Check the dyne sticky and compare. Could be how the dyno is loaded, vanos. Nothing in the logs would point to this.

OP, you mind if I post an AMS log... I think I can find one with similar ambient, rpm pull, and boost. I'm procede with fmic also. curious how they compare.
Joshboody is offline  
0
Reply With Quote
      06-14-2011, 11:13 PM   #15
The Ghost
Reborn
 
The Ghost's Avatar
 
Drives: 335i
Join Date: Jun 2011
Location: USA

Posts: 1,079
iTrader: (1)

Quote:
Originally Posted by rader1 View Post
If its the IC in the first pick next to the stock IC. That's a huge difference size wise, what/how much did you have to cut to get it to fit?
That is indeed CX vs. stock. You can't tell once the car is back together, but it is MUCH bigger than stock. The install is the same as the Big Tom IC and the other CX install posts such as THIS ONE


Quote:
Originally Posted by secretsquirrel View Post
can you post specifically which 2.5 coupler kit you purchased? Thanks.
http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWNX:IT
The Ghost is offline   United_States
0
Reply With Quote
      06-14-2011, 11:19 PM   #16
The Ghost
Reborn
 
The Ghost's Avatar
 
Drives: 335i
Join Date: Jun 2011
Location: USA

Posts: 1,079
iTrader: (1)

Quote:
Originally Posted by Joshboody View Post
Timing looks good, nothing to worry about. Not sure about the dyno dips... Check the dyne sticky and compare. Could be how the dyno is loaded, vanos. Nothing in the logs would point to this.
If there was knock, how would it show-up in the logs? I'm new to BMWs and how the ECU and PROcede respond to knock (used to reading logs for other cars where there is actually a knock count value to log).

Quote:
Originally Posted by Joshboody View Post
OP, you mind if I post an AMS log... I think I can find one with similar ambient, rpm pull, and boost. I'm procede with fmic also. curious how they compare.
I don't mind at all.
The Ghost is offline   United_States
0
Reply With Quote
      06-14-2011, 11:26 PM   #17
kdiggz
Captain
 
kdiggz's Avatar
 
Drives: e92 ///M3
Join Date: Jan 2010
Location: Buffalo, NY

Posts: 607
iTrader: (9)

Can you describe which hard pipes from the kit you used? Did you have to cut the pipes to make them work? Any fabrication required? Thanks
kdiggz is offline   No_Country
0
Reply With Quote
      06-14-2011, 11:28 PM   #18
Joshboody
Lieutenant Colonel
 
Drives: pickemuptruck
Join Date: Jul 2009
Location: Phoenix, AZ

Posts: 1,708
iTrader: (7)

Quote:
Originally Posted by The Ghost View Post
If there was knock, how would it show-up in the logs? I'm new to BMWs and how the ECU and PROcede respond to knock (used to reading logs for other cars where there is actually a knock count value to log).



I don't mind at all.
Cool, I'll look for a comparable log.

Knock is generally a 3deg drop from consecutive sampling points. But make sure you are comparing similar load / boost values. During spool for example there will be a large sudden drop in timing.

We can log knock also, but chances are you will skip the data sample and it won't get recorded. Just like you can't log every rpm. Useless channel.
Joshboody is offline  
0
Reply With Quote
      06-14-2011, 11:43 PM   #19
The Ghost
Reborn
 
The Ghost's Avatar
 
Drives: 335i
Join Date: Jun 2011
Location: USA

Posts: 1,079
iTrader: (1)

Quote:
Originally Posted by kdiggz View Post
Can you describe which hard pipes from the kit you used? Did you have to cut the pipes to make them work? Any fabrication required? Thanks
Essentially, I used onw 90 deg bend for the driver's side to go from IC to factory hard pipe, and a 45 deg for the for the passenger's side to the hard pipe (I did not reuse the factory accordion hose). I had to cut both to fit, but it wasn't hard. You can use a $30 grinder.

There are pictures of other piping setups in the above link.
Attached Images
  
The Ghost is offline   United_States
0
Reply With Quote
      06-14-2011, 11:52 PM   #20
Booztd 3
Private
 
Drives: 2007 335i Sedan
Join Date: Jun 2011
Location: Peoria, IL

Posts: 72
iTrader: (4)

I've only tuned cars with an AEM EMS and we can monitor knock sensor voltages individually (My RB26 powered car has 1 per 3 cylinders)

Naturally the knock sensor will have some noise but usually anything up over 1V I'll interpret as knock.

In the dyno chart below (RB26 car, I wasnt running a tight enough plug gap and the spark blew out, causing that hiccup)



I am curious to see how other dyno's compare....

An abrupt dip of about 30ft/lbs especially at pk tq is definitely not something to ignore...
__________________
Work: '07 335i Sedan
Play: '90 300ZX (10.3@140mph)
And For Giggles: 06' R1
Booztd 3 is offline   United_States
0
Reply With Quote
      06-14-2011, 11:55 PM   #21
Joshboody
Lieutenant Colonel
 
Drives: pickemuptruck
Join Date: Jul 2009
Location: Phoenix, AZ

Posts: 1,708
iTrader: (7)

AMS FMIC Log

Below is a log of 3rd to 4th. It was 100deg during mid afternoon. I had just romped on it after heating up at a stop light, u-turn and stepped on it in 3rd (log shown). About 4000rpm to 6200rpm... i think the OP reved higher to around 6500. My log shows a 124 start of 3rd to 129deg F at the end of 3rd.

OP, what was the ambient temps when you logged the street run? From the log looks like about 34deg C to 42deg?? Typically I see about 15deg F above ambient for IAT when cruising, but there's very little rise in temp during 1 gear WOT.

Boost was around 11psi, but i'm at 1000 ft above sea level, so more like 11.5 to 12psi actually.

did you log wastegate DC by chance... i would be curious since we have similar mods and boost.

EDIT: 91oct shit southwest gas
Attached Images
 
Joshboody is offline  
0
Reply With Quote
      06-15-2011, 12:11 AM   #22
The Ghost
Reborn
 
The Ghost's Avatar
 
Drives: 335i
Join Date: Jun 2011
Location: USA

Posts: 1,079
iTrader: (1)

Quote:
Originally Posted by Joshboody View Post
OP, what was the ambient temps when you logged the street run? From the log looks like about 34deg C to 42deg?? Typically I see about 15deg F above ambient for IAT when cruising, but there's very little rise in temp during 1 gear WOT.

Boost was around 11psi, but i'm at 1000 ft above sea level, so more like 11.5 to 12psi actually.

did you log wastegate DC by chance... i would be curious since we have similar mods and boost.

EDIT: 91oct shit southwest gas
It was about 78-80 degs F. How did you get it to log in F vs C?

Quote:
Originally Posted by Booztd 3 View Post
I am curious to see how other dyno's compare....

An abrupt dip of about 30ft/lbs especially at pk tq is definitely not something to ignore...
Agreed. I don't know what else to log look for.
The Ghost 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 01:54 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