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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > n55 custom tuning thread



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      04-28-2012, 09:51 AM   #23
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Quote:
Originally Posted by eyim1988
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sweetness!
I got the dp/exhaust made/ put on!!

It's actually VERY VERY quiet!! I remember my stock exhaust/berk dp being louder!! But the car feeels incredible!! SO SMOOTH!!
I'll post video up when i have the time!!
Awesome man! Plz post some vids when you get a chance
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      04-28-2012, 12:34 PM   #24
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Quote:
Originally Posted by Sloppy
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Originally Posted by eyim1988
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Originally Posted by Sloppy View Post
sweetness!
I got the dp/exhaust made/ put on!!

It's actually VERY VERY quiet!! I remember my stock exhaust/berk dp being louder!! But the car feeels incredible!! SO SMOOTH!!
I'll post video up when i have the time!!
Awesome man! Plz post some vids when you get a chance
Actually it's way too quiet even for being fully Catless Lol. I might unpack the muffler a bit more but I feel like if I do that it's going to be very loud and raspy
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      05-03-2012, 01:28 PM   #25
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Any comments on my first logged run? I have 6AT, so I had a 3rd gear run, but had to start a bit higher in rpm and roll on the throttle a bit at first to keep it from downshifting to 2nd. I stopped just short of redline so I didnt rear end the car on the highway.

Stock 2011 335i e93, procede v2.5 only. 93 Octane

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      05-03-2012, 11:38 PM   #26
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Originally Posted by SpartanGA
Any comments on my first logged run? I have 6AT, so I had a 3rd gear run, but had to start a bit higher in rpm and roll on the throttle a bit at first to keep it from downshifting to 2nd. I stopped just short of redline so I didnt rear end the car on the highway.

Stock 2011 335i e93, procede v2.5 only. 93 Octane

16psi @2700 w/ only procede??!!
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      05-04-2012, 07:43 AM   #27
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16psi @2700 w/ only procede??!!
?? The horizontal axis is time (seconds). The top graph shows the RPM vs. Time...so I am getting about 15psi+ around 5k. 4700rpm to 5300rpm...then it drops to 13psi by 6000rpm. My peak per the log is 15.9psi at 4875rpm. The autotune boost set point is 15.8psi...I am told that is pretty much the max due to restriction and heat in this motor unless I get DP....exhaust would help...FMIC would help...etc.

Any other comments on AFR or Ign Adv? I have fuel correction but didnt graph it. Robert thought it looked spot on.
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      05-04-2012, 08:13 AM   #28
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well to me it looks like your pulling major timing at about 2.5 sec. in where it looks like a 2 deg drop if not more. Being under 5 to me is very low for ign. advance. May just be due to your car being stock with increased boost.

Personally i'd like to see my boost curve hug the boost control set point a little better. Looking at your graph and seeing that the boost struggles to get there mid pull and barely touches means its a little high. Generally you want to get to that point asap and hug it all the way across the pull. @ about 5K you can see the turbo just runs out of steam and starts decreasing...

I would set the boost control set point closer to 14psi for now and see if your ignition increases a little towards to the 10 mark.
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      05-04-2012, 09:37 AM   #29
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well to me it looks like your pulling major timing at about 2.5 sec. in where it looks like a 2 deg drop if not more. Being under 5 to me is very low for ign. advance. May just be due to your car being stock with increased boost.

Personally i'd like to see my boost curve hug the boost control set point a little better. Looking at your graph and seeing that the boost struggles to get there mid pull and barely touches means its a little high. Generally you want to get to that point asap and hug it all the way across the pull. @ about 5K you can see the turbo just runs out of steam and starts decreasing...

I would set the boost control set point closer to 14psi for now and see if your ignition increases a little towards to the 10 mark.
so your thought is by decreasing the autotune boost to 14, the actual boost would get there quicker and stay longer...thus the 'area under the curve' would be greater than what I have now.

What are the advantages of increased ignition?
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      05-04-2012, 10:11 AM   #30
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so your thought is by decreasing the autotune boost to 14, the actual boost would get there quicker and stay longer...thus the 'area under the curve' would be greater than what I have now.

What are the advantages of increased ignition?
Basically, the more timing advance you are running, the stronger your car runs. You make more power when you can advance timing vs. just running more boost with less timing.

This is a good thread to get a handle on timing

http://www.e90post.com/forums/showthread.php?t=282443
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      05-04-2012, 01:31 PM   #31
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Basically, the more timing advance you are running, the stronger your car runs. You make more power when you can advance timing vs. just running more boost with less timing.

This is a good thread to get a handle on timing

http://www.e90post.com/forums/showthread.php?t=282443
thanks for that link, very useful.

In my data, I logged Ignition Correction and it is 0...until 4300rpm in my runs where it is -0.25. Thats it...I didnt logged DME Ign Adv, only CAN Actual.

If I am set at 100% Ign correction (default as it says), wouldnt it have a larger correction? And since it does not, why is my CAN Actual Adv so low?
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      05-17-2012, 08:34 PM   #32
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bumping this thread

we will have more current logs in a few days. This kind of thread is needed and anyone who wants to tweak there tunes should post in here. Lets try and get some more activity in the n66 section haha
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      05-31-2012, 01:21 PM   #33
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Just got my rev3 installed. What a nightmare trying to get Windows 7 to work with the USB cable. After finding out the used laptop I bought either has a bad validation code, or something going on with the version of windows in it (I can't install an XP mode), I had to wipe the whole thing and install an old version of XP that I have.

Everything is working now but my logs on map1 didn't look so good. I'm not getting much if any timing. I've done about 6 WOT pulls in 3rd gear so I would thing autotuning should have done it's thing. I'm getting 8psi right away, then a pause for a second or so, then it climbs to 13.5psi (target boost).

I'm going to log some map0 to make sure everything runs well on the stock map, but I have a few questions:

Where in the user software can I adjust the min/max's of the graphs that are displayed? For example, if the important part of the pull is from 10 seconds to 29 seconds, how do I shorten that from the 1min+ of log displayed?
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      05-31-2012, 01:27 PM   #34
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Everything is working now but my logs on map1 didn't look so good. I'm not getting much if any timing. I've done about 6 WOT pulls in 3rd gear so I would thing autotuning should have done it's thing. I'm getting 8psi right away, then a pause for a second or so, then it climbs to 13.5psi (target boost).
This can be solved quite easily. What map are you using and have you made any changes to the default settings. What octane do you use. What other mods do you have ?

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Where in the user software can I adjust the min/max's of the graphs that are displayed? For example, if the important part of the pull is from 10 seconds to 29 seconds, how do I shorten that from the 1min+ of log displayed?
Press "P" and set either Autoscale or Min and Max values. Move mouse over the chart you want to change. Also use Page-Up / Page-Down to cycle through the channels you added to a single chart. Try to use the same scaling for all channels on the same chart.

Press Up/Down arrow to zoom in/out around where the mouse is. Also you can place two markers (with right mouse click) and then with the Data menu, zoom that area.
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      05-31-2012, 01:30 PM   #35
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Oh and try logging those channels:

Code:
CAN DBW Throttle
CAN Actual AFR Bank 1
Boost Control Set Point
CAN Actual Ign Adv
CAN DME Boost Actual
Boost Control DC
Inlet Air Temp
Autotune Ignition Correction
Autotune Boost Setting
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      05-31-2012, 01:52 PM   #36
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Thanks, will do. I'm using map1, good 93 octane gas (shell). I believe the only user adjustable I changed was the "start boost in" I changed to 50% to try to get rid of that delay in boost response, but shouldn't that go away with autotuning naturally? I think I also have my wastegate position at 100%.
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      06-05-2012, 10:26 AM   #37
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Quote:
Originally Posted by eyim1988 View Post
bumping this thread

we will have more current logs in a few days. This kind of thread is needed and anyone who wants to tweak there tunes should post in here. Lets try and get some more activity in the n66 section haha
Updates?

Kalud helped me sort out my boost delay. I'll be taking logs (haha... 12 year old humor) tomorrow on my day off to sort out my timing.

Curious, eyim, how your logs turned out pre-downpipe. I have a gut feeling my stock downpipe may be restricting my ability to get a smooth powerband because of heat, etc...

Any logs to share?
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      06-05-2012, 11:44 AM   #38
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Updates?

Kalud helped me sort out my boost delay. I'll be taking logs (haha... 12 year old humor) tomorrow on my day off to sort out my timing.

Curious, eyim, how your logs turned out pre-downpipe. I have a gut feeling my stock downpipe may be restricting my ability to get a smooth powerband because of heat, etc...

Any logs to share?
I will later. But you should def change your downpipe, you are right! And you will feel it instantly as well!

Im getting my car dynoed today! Will keep you guys updated in a new thread!
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      06-08-2012, 03:52 PM   #39
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I wanted to share a couple logs with you guys The notes are from Kalud helping me out to tweak!





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      06-08-2012, 04:25 PM   #40
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Quote:
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I wanted to share a couple logs with you guys The notes are from Kalud helping me out to tweak!





Logs look damn good. I wish I mine could look as good as that I would be making more power and your iats
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      06-08-2012, 04:58 PM   #41
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hey sloppy do you have a fmic?
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      06-08-2012, 05:35 PM   #42
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hey sloppy do you have a fmic?
Yes I have the ETS 5" direct fit. It's a quality IC that comes with its own charge pipe piece for better flow
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      06-08-2012, 05:58 PM   #43
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so you've tried e85 mixes? Did you notice a difference after the intercooler?
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      06-08-2012, 06:12 PM   #44
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so you've tried e85 mixes? Did you notice a difference after the intercooler?
I have not tried any e85 gas yet, I'm not sure how safe it is in terms of corroding our internal fuel system components prematurely. I'm not sure I care to try it though, my meth does the trick for me right now.

Yeah the ic made a huge difference in terms of consistency in performance. Its very good in getting rid of the high temps as well as increasing the flow in your entire system. Responsiveness also increased when you couple that with a quality CP. I don't know if you've ever seen how stupidly restrictive the stock connections and end tanks are on our stocker!
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