All COBB Tuning AccessPORT Flash for N54 335i Discussion Here

Tyler0630 · 08-09-2011, 10:00 PM

Quote:

Originally Posted by E90SoFlo

Idk my waste gates are rattling so maybe thats true, but no surging..

Cobb makes my waste gates sound like dick! But I don't have surging on 6mt

Here's a video with a comparison between stock and Cobb rattle

mithiral67 · 08-09-2011, 10:24 PM

Quote:

Originally Posted by themyst

To be honest, once ATR comes out, piggybacks are simply done IMO.

Was this in response to my comment or just a general observation.

themyst · 08-09-2011, 10:49 PM

Quote:

Originally Posted by mithiral67

Was this in response to my comment or just a general observation.

I guess both? *shrug*

themyst · 08-09-2011, 10:51 PM

Quote:

Originally Posted by Tyler0630

Cobb makes my waste gates sound like dick! But I don't have surging on 6mt

Here's a video with a comparison between stock and Cobb rattle

That's not too bad. I've heard far worse.

acdHQK713K · 08-10-2011, 12:37 AM

Quote:

Originally Posted by themyst

When stage 2 comes out, I am contemplating running a small meth nozzle, like a M1 or DO1 only for cooling on a 50/50 mix. If the meth isn't flowing it won't be disastrous since it is tuned for pump gas.

Anyone else considering this?

Has anyone actually evaluated the potential benefits of doing this on an otherwise pump gas map? It seems that the benefits, cooling included, would be almost negligible.

I've thought about doing it so I can run the 93 octane map with 91 octane in the tank. But I think you even advised against this given the minimal benefits with respect to HP

Jeff@TopGearSolutions · 08-10-2011, 01:58 AM

Without specifically tuning ignition and boost for your meth you cant optimize your performance. Can you help an OTS map? yes, how much depends.

BMW72 · 08-10-2011, 02:06 AM

I was told that the COBB tuner throws alot of codes and you need a BT tool to clear them before you head to the dealer ? Is this true ?

enrita · 08-10-2011, 04:21 AM

Quote:

Originally Posted by BMW72

I was told that the COBB tuner throws alot of codes and you need a BT tool to clear them before you head to the dealer ? Is this true ?

No......

BMW72 · 08-10-2011, 04:51 AM

Quote:

Originally Posted by enrita

No......

Can anyone confirm this ? I was told this by a company that sell quite a few different tunes here, I 'd like to be sure !

enrita · 08-10-2011, 04:53 AM

Quote:

Originally Posted by BMW72

Can anyone confirm this ? I was told this by a company that sell quite a few different tunes here, I 'd like to be sure !

I have seen it with my own eyes and checked with ISTA BMW program after removal of cobb. Completely untampered and no codes.

franzzz · 08-10-2011, 06:58 AM

Quote:

Originally Posted by enrita

I have seen it with my own eyes and checked with ISTA BMW program after removal of cobb. Completely untampered and no codes.

I confirm.

BMWsky · 08-10-2011, 07:42 AM

Quote:

Originally Posted by BMW72

I was told that the COBB tuner throws alot of codes and you need a BT tool to clear them before you head to the dealer ? Is this true ?

This comes up a lot. You have to be sure that you're running the latest Cobb update or there could be a chance you'll leave a shadow code. If you're running the latest firmware update, you're good to go. I tested it myself against a BT tool.

themyst · 08-10-2011, 08:41 AM

Quote:

Originally Posted by Jeff@topgearsolutions

Without specifically tuning ignition and boost for your meth you cant optimize your performance. Can you help an OTS map? yes, how much depends.

If ur intention is to use meth as a supplemental fuel, then yes you need to tune for meth for the greatest benefit.

What I am asking is merely using meth/water injection to keep cylinder temps and IAT down. Being that Cobb uses the dme load-based power logic, there are other benefits to keeping IAT down.

Jeffman · 08-10-2011, 08:59 AM

Quote:

Originally Posted by mithiral67

Was this in response to my comment or just a general observation.

What's ATR stand for? (Sorry - I checked the acronym listing and couldn't find ATR.)

mithiral67 · 08-10-2011, 09:06 AM

Quote:

Originally Posted by JHR

What's ATR stand for? (Sorry - I checked the acronym listing and couldn't find ATR.)

Its cobb's user/tunner shops software for customizing the tune. It will allow users or tuner shops to dyno or road tune a car.

Jeffman · 08-10-2011, 09:12 AM

Quote:

Originally Posted by mithiral67

Its cobb's user/tunner shops software for customizing the tune. It will allow users or tuner shops to dyno or road tune a car.

Thanks....I found it on the Cobb website...Access Tuner Race, or something like that. Sounds dangerous in the hands of non-professionals.

E90SoFlo · 08-10-2011, 09:15 AM

Quote:

Originally Posted by JHR

Thanks....I found it on the Cobb website...Access Tuner Race, or something like that. Sounds dangerous in the hands of non-professionals.

They have "restrictions" on some of it, but you will not want to be clicking around unless you know what you're doing.

bkrM3 · 08-10-2011, 09:56 AM

Quote:

Originally Posted by BMW72

I was told that the COBB tuner throws alot of codes and you need a BT tool to clear them before you head to the dealer ? Is this true ?

Quote:

Originally Posted by enrita

No......

Quote:

Originally Posted by enrita

I have seen it with my own eyes and checked with ISTA BMW program after removal of cobb. Completely untampered and no codes.

Quote:

Originally Posted by franzzz

I confirm.

Quote:

Originally Posted by BMWsky

This comes up a lot. You have to be sure that you're running the latest Cobb update or there could be a chance you'll leave a shadow code. If you're running the latest firmware update, you're good to go. I tested it myself against a BT tool.

I can also confirm. Uninstalled then tested with BT - was even on previous firmware at the time. Scan was totally clean.

Wookie420 · 08-10-2011, 12:05 PM

Quote:

Originally Posted by BMW72

Can anyone confirm this ? I was told this by a company that sell quite a few different tunes here, I 'd like to be sure !

I confirm this also.

Jeff@TopGearSolutions · 08-10-2011, 12:24 PM

Quote:

Originally Posted by themyst

If ur intention is to use meth as a supplemental fuel, then yes you need to tune for meth for the greatest benefit.

What I am asking is merely using meth/water injection to keep cylinder temps and IAT down. Being that Cobb uses the dme load-based power logic, there are other benefits to keeping IAT down.

I dont use meth for fuel. I use it to maximize performance. You still cant maximize performance on a OTS map. AKA you're leaving power on the table. Ignition targets only go so high on OTS maps and boost.

themyst · 08-10-2011, 01:57 PM

Quote:

Originally Posted by Jeff@topgearsolutions

I dont use meth for fuel. I use it to maximize performance. You still cant maximize performance on a OTS map. AKA you're leaving power on the table. Ignition targets only go so high on OTS maps and boost.

So you're saying you can run 17-18 psi reliably on a piggyback without meth/race gas? As stated previously, I am trying to keep IAT down only to keep boost down due to the flash tunes load targeting approach, which in turn should save compressor life. No ones talking about maximizing performance on an OTS stage 2 map, that will come with ATR. I am merely trying to suppress heatsoak.

dzenno · 08-10-2011, 02:01 PM

With enough timing pulled you could run 20psi on pump gas

but then what's the point...trade offs aren't worth while...you want to run the max timing curve for a given power level with as much boost without knocking...start there and up boost, keep octane the same...when you encounter knock, go back down on timing and a bit, check for knock for the same octane, then up boost a bit more...if there's no knock up boost until you see knock, then lower it down a bit and you're done

then play with IAT based timing compensation..

08-10-2011, 01:58 AM	#1942
Jeff@TopGearSolutions 3482 Rep 79,210 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Without specifically tuning ignition and boost for your meth you cant optimize your performance. Can you help an OTS map? yes, how much depends.
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08-10-2011, 02:06 AM	#1943
BMW72 Private First Class 18 Rep 178 Posts Drives: 2009 335i XDrive Join Date: Jul 2011 Location: Pittsburgh iTrader: (1) Garage List 2009 BMW 335I X-DRIVE [1.00]	I was told that the COBB tuner throws alot of codes and you need a BT tool to clear them before you head to the dealer ? Is this true ? __________________ 2009 BMW 335i X-Drive
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08-10-2011, 02:01 PM	#1958
dzenno Banned 298 Rep 5,876 Posts Drives: Join Date: Feb 2006 iTrader: (1)	With enough timing pulled you could run 20psi on pump gas but then what's the point...trade offs aren't worth while...you want to run the max timing curve for a given power level with as much boost without knocking...start there and up boost, keep octane the same...when you encounter knock, go back down on timing and a bit, check for knock for the same octane, then up boost a bit more...if there's no knock up boost until you see knock, then lower it down a bit and you're done then play with IAT based timing compensation..
	Appreciate 0 Quote