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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 > All COBB Tuning AccessPORT Flash for N54 335i Discussion Here



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      02-03-2012, 01:07 PM   #3609
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Quote:
Originally Posted by nurburgringbound View Post
likely a silly question...but, anyone with recent experiences with the amount of fuel economy changes with a stage 1 aggressive map, with the occasional, stopped and off the line, spirited driving session? Seen a older piece about din@n stage 1? indicating not a huge change. stock configured n54, ideally.
see this whole thread
http://www.e90post.com/forums/showthread.php?t=530042
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      02-03-2012, 01:49 PM   #3610
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Quote:
Originally Posted by tscdennab View Post
I am a bit jealous of the new "Eco Pro" mode that the new F30 3-series has. It's nothing more than a lazy throttle map but it does reduce fuel consumption significantly. I wonder if people on here would find that a "fuel economy" throttle map would be useful ? The linear throttle map is probably helping over the stock throttle, but how about an even lazier throttle map, for fuel economy reasons ? Could be combined with a leaner running map and reduced torque until 4000RPM for further fuel savings...
Go buy a Prius if you want that.
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      02-03-2012, 01:57 PM   #3611
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has anyone safely run the stage1 sport map in CA? I know the site mentions to run stage1 standard map in CA due to crappy gas here. Will running the sport tune retard the timing to adjust for fuel? my 335i is stock otherwise
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      02-03-2012, 02:14 PM   #3612
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Quote:
Originally Posted by Bash View Post
Not true, clearing dtc is not ecu reset.
Adaptions is not the same as a ecu reset!
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      02-03-2012, 02:27 PM   #3613
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My car was valet in mode for 2 days and it got incredible mileage. I am told that the actual mileage is better than what the dash says, but the dash was showing incredible numbers. I was surprised that, even under light throttle, the turbo is adding flow and reducing the vacuum. In valet mode, I believe that all turbo boost is bypassed.
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      02-03-2012, 02:43 PM   #3614
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Quote:
Originally Posted by Velocity26 View Post
My car was valet in mode for 2 days and it got incredible mileage. I am told that the actual mileage is better than what the dash says, but the dash was showing incredible numbers. I was surprised that, even under light throttle, the turbo is adding flow and reducing the vacuum. In valet mode, I believe that all turbo boost is bypassed.
In valet mode the WG are held open and no boost is developed, you can verify this by live monitoring boost on the AP. One thing i noticed about valet is the exhaust was much louder and had much more pronounced drone.
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      02-03-2012, 03:35 PM   #3615
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Quote:
Originally Posted by rader1 View Post
In valet mode the WG are held open and no boost is developed, you can verify this by live monitoring boost on the AP. One thing i noticed about valet is the exhaust was much louder and had much more pronounced drone.

I got my chrome trim vinyl wrapped last week so I loaded up the valet map for the first time. First thing I noticed when picking the car up was the exhauast was much louder. Then when I got on the freeway I wanted to see what happens when you hit the 4k rpm limiter. Only way I can describe it was similar to getting a fuel cut on my old STI. Its like your motor just ran in to a brick wall mid pull. I wish they just put a rev limiter at 4k, but oh well.
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      02-03-2012, 04:13 PM   #3616
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Quote:
Originally Posted by 805beemer View Post
I got my chrome trim vinyl wrapped last week so I loaded up the valet map for the first time. First thing I noticed when picking the car up was the exhauast was much louder. Then when I got on the freeway I wanted to see what happens when you hit the 4k rpm limiter. Only way I can describe it was similar to getting a fuel cut on my old STI. Its like your motor just ran in to a brick wall mid pull. I wish they just put a rev limiter at 4k, but oh well.
seriously? hahahaha i kinda want to try it now.
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      02-03-2012, 04:16 PM   #3617
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I have to admit, the motor is really smooooth, and the sound is pretty cool too. It gives the car a different "feel". Almost wish I could temporarily remove the rev limiter and see how the engine pulls N/A.
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      02-03-2012, 04:38 PM   #3618
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The car does feel very responsive. It just doesn't pull lol
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      02-03-2012, 05:13 PM   #3619
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Cobb - Any updates on the progress of your work with the RB turbos?
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      02-03-2012, 05:15 PM   #3620
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Quote:
Originally Posted by scottp999 View Post
Cobb - Any updates on the progress of your work with the RB turbos?
people are testing so hold on
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      02-03-2012, 05:21 PM   #3621
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Quote:
Originally Posted by scottp999 View Post
Cobb - Any updates on the progress of your work with the RB turbos?
They broke through a software fueling limit not too long ago
No word on dyno #s yet though

I think the Cobb&RB combo is going to provide the performance most people are looking for a big single to provide.
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      02-03-2012, 05:28 PM   #3622
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Quote:
Originally Posted by rader1 View Post
They broke through a software fueling limit not too long ago
No word on dyno #s yet though

I think the Cobb&RB combo is going to provide the performance most people are looking for a big single to provide.
you are not going to get more power because of that. just more safety.
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      02-03-2012, 05:40 PM   #3623
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Quote:
Originally Posted by enrita View Post
you are not going to get more power because of that. just more safety.
Dzenno mentioned running 21PSI on RB's to 6500 rpm with good AFR's so, that's good in terms of the earlier failures that may have been caused by the DME fueling limit Cobb has now eliminated.

I think RB mentioned somewhere in the 23 PSI range we would probably see diminishing power returns due to the stock housings. Will be nice to see that proven out, and what the real limit is on pump/meth or race/meth.

I agree, a large single will find it's place with a crowd that has different HP goals for their car than a twin upgrade that is a quick bolt on for more power with much lower total costs.

I would love to be able to hit 500whp on pump/meth safely.
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      02-03-2012, 07:47 PM   #3624
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Quote:
Originally Posted by enrita View Post
you are not going to get more power because of that. just more safety.
If they can now provide safe AFRs at well 20psi then that leads to more power potential. But yes, you are correct in that doesn't necessarily mean more power.
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      02-03-2012, 08:19 PM   #3625
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I'd love to see a dyno sheet on a 21psi through 6500RPM RB run... it would be interesting to see if the gains have began to significantly diminish or still on a fair rise.
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      02-03-2012, 08:34 PM   #3626
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Quote:
Originally Posted by RobBeck View Post
I'd love to see a dyno sheet on a 21psi through 6500RPM RB run... it would be interesting to see if the gains have began to significantly diminish or still on a fair rise.
That makes hundreds of us that would like to see that lol
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      02-03-2012, 08:46 PM   #3627
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You'd be surprised how much I am not told... I have to solicit everyone for information!!

Quote:
Originally Posted by rader1 View Post
That makes hundreds of us that would like to see that lol
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      02-03-2012, 09:22 PM   #3628
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Quote:
Originally Posted by RobBeck View Post
I'd love to see a dyno sheet on a 21psi through 6500RPM RB run... it would be interesting to see if the gains have began to significantly diminish or still on a fair rise.
What's the size of the rb turbo(lbs)per min?
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      02-04-2012, 09:31 AM   #3629
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Approx. 58 lb/min vs. the original 39 lb/min.
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      02-04-2012, 02:08 PM   #3630
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Hello, is anyone running the Cobb Aggressive maps on a DCT N54 Z4?
If yes, any hiccups or possible issues (like the ones the DCT cars have with piggybacks)?
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