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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > N54 Dyno Results :: JB4 + DCI



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      10-22-2014, 11:08 AM   #1
Motorsport.Nick
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N54 Dyno Results :: JB4 + DCI

Hey guys,

I wanted to post my dyno results from this weekend for discussion.
This was on 92 octane pump gas, which I use everyday. I wasn't interested in dynoing with E85 because I wanted to see what power it was making everyday.

Car:
2007 E90 335i
6 speed
110,000 miles


Mods:
JB4 G5 ISO in Map 5
BMS DCIs


Power:
341whp
395wtq

Dyno Dynamics @ PRE in Portland
Pump gas - 92 oct


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      10-22-2014, 11:45 AM   #2
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Good numbers!
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      10-22-2014, 11:48 AM   #3
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Wow I forgot how much this car runs out of steam on the top end. Time for an FMIC upgrade!
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      10-22-2014, 11:48 AM   #4
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Best $ per HP mod for the 335i!
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      10-22-2014, 12:07 PM   #5
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Quote:
Originally Posted by Jeff@TopGearSolutions View Post
Wow I forgot how much this car runs out of steam on the top end. Time for an FMIC upgrade!
Yea no kidding!

The heat soak was really bad, each of my 3 pulls was worse than the previous.
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      10-22-2014, 12:42 PM   #6
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Quote:
Originally Posted by Motorsport.Nick View Post
Yea no kidding!

The heat soak was really bad, each of my 3 pulls was worse than the previous.
This comes as no surprise, the stock fmic is just as bad even on stock boost levels.

FMIC should be priority should you continue to modify your vehicle further.
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      10-22-2014, 01:51 PM   #7
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Good numbers!!
Post a log , car is loosing way too much power on high rpm
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      10-22-2014, 04:06 PM   #8
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Quote:
Originally Posted by mike@x-ph.com View Post
Good numbers!!
Post a log , car is loosing way too much power on high rpm


Here is my most recent log. Same mods, same fuel, much hotter day out than the dyno run.

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      10-26-2014, 09:43 AM   #9
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I've got the same mods and Motorsport and was seriously considering an oil cooler as I don't have a stock one. Sounds to me that a FMIC might be a better way to go...thoughts?
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      10-26-2014, 11:20 AM   #10
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Originally Posted by PaulBert View Post
I've got the same mods and Motorsport and was seriously considering an oil cooler as I don't have a stock one. Sounds to me that a FMIC might be a better way to go...thoughts?
Both are important. How hard do you drive your car? I've had experience with early 335s that didnt have oil coolers and it sucks! It was always running so damn hot it made us pretty nervous.

Intercooler will be a good upgrade but along a different line than an oil cooler. More performance oriented.
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      10-28-2014, 12:46 PM   #11
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Nice results! We have the exact same car right down to the mods although I have you slightly beat with 117k miles. Just curious... Have you ever cleaned your intake valves?
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      10-28-2014, 01:09 PM   #12
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decent numbers...wonder how much more downpipes would give you on the dyno...

i need to get an fmic...asap.
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      10-28-2014, 02:45 PM   #13
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Dyno seems to read high for tune + DCI only.
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      10-28-2014, 03:05 PM   #14
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Quote:
Originally Posted by PaulBert View Post
I've got the same mods and Motorsport and was seriously considering an oil cooler as I don't have a stock one. Sounds to me that a FMIC might be a better way to go...thoughts?
I'd go with the FMIC first unless you find yourself exceeding 250F oil temps often.
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      10-28-2014, 03:13 PM   #15
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Quote:
Originally Posted by Motorsport.Nick
Quote:
Originally Posted by mike@x-ph.com View Post
Good numbers!!
Post a log , car is loosing way too much power on high rpm


Here is my most recent log. Same mods, same fuel, much hotter day out than the dyno run.

It's hard to tell on my cell phone with this silly app, but if that red line at the bottom is your ign1 timing then that log looks like crap. Add iat to that log and repost
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      10-28-2014, 04:11 PM   #16
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Quote:
Originally Posted by 3000GT MR View Post
It's hard to tell on my cell phone with this silly app, but if that red line at the bottom is your ign1 timing then that log looks like crap. Add iat to that log and repost
What do you look for when examining the ignition line in the log?

I'll see if I can sneak away from work and get a fresh log
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      10-28-2014, 04:21 PM   #17
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Quote:
Originally Posted by Motorsport.Nick View Post
What do you look for when examining the ignition line in the log?

I'll see if I can sneak away from work and get a fresh log
Post your logs on Datazap.Me

Reading JB4 logs is a nightmare.

Ignition timing should be around 1-3 degress in the mid-range ramping up to 10-12 by redline.

During a WOT, if you see a timing drop of 3 degrees it's an indication of a suspected knock / knock event.
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      10-28-2014, 04:59 PM   #18
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Quote:
Originally Posted by Motorsport.Nick
Quote:
Originally Posted by 3000GT MR View Post
It's hard to tell on my cell phone with this silly app, but if that red line at the bottom is your ign1 timing then that log looks like crap. Add iat to that log and repost
What do you look for when examining the ignition line in the log?

I'll see if I can sneak away from work and get a fresh log
It's been so long since I looked at a sock timing table but you should see it increase gradually and look almost like steps climbing to redline. Obviously that's based off your timing map but it should never look like waves or have any dips. The stock dme does a phenomenal job at controlling timing and is very quick to change based off conditions. It's the first tell take sign there is something going on. Load the latest jb FW that allows you to see all the cylinders timing.
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      10-28-2014, 05:00 PM   #19
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Quote:
Originally Posted by Motorsport.Nick View Post
What do you look for when examining the ignition line in the log?

I'll see if I can sneak away from work and get a fresh log
More than the absolute values, it's about seeing a nice advance curve building as revs rise. As you can see in the posted log, the timing curve is all over the place and is constantly being retarded throughout the pull.


You need a front mount that isn't awful.
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