[Terry @ BMS]

***This info is OBSOLETE now! See this thread re: the new FREE back end flash: http://www.n54tech.com/forums/showthread.php?t=20563

Hey guys,

Just as an update we have developed a backend flash map for use with the JB4 for those of you running larger turbos or nitrous. The setup has been well proven across many RB turbo installs now and allows proper fueling in the 500whp+ range these turbos put out. In addition there are quite a few other advantages specifically VANOS remapping, ignition advance remapping, etc, that make the BMS flash a must have for anyone wanting to push big power levels.

A few comments on the changes:

1) We've shifted the fuel control, including open loop adjustment, over to the flash side. This means improved AFR targeting at high boost levels and a higher fuel trim ceiling without the need for open loop adjustment. This change sets the JB4 up to accommodate power levels up to the 600rw level and beyond.

2) We've remapped advance out on the flash side producing an overall cleaner and more predicable result than CPS offsetting can. This also allows increased timing advance during those conditions where it makes sense.

3) Many other changes have been made including VANOS changes, fuel scaling, spool up logic changes, flatline fix, etc. And as we make addl flash map changes you can download those changes or remove the flash completely without leaving your driveway.

4) These changes will allow the JB4 to focus on what it does best for higher HP cars. Boost control, CANbus integration, meth integration, safety features, etc.

5) Note you probably need to be making 425whp or more to benefit from the BMS back end flash.

6) It's a BMS flash map. If you email us asking about a Cobb flash we'll have no idea what you are talking about. We DO NOT use the Cobb flash maps. We are simply using this Cobb AP device for at home flashing of the BMS flash map as it's the least expensive and best way to handle it.

And if you need a Cobb AP we keep them IN STOCK. Email us for special offers.

CLICK HERE TO ORDER

[NihonX]

Awesome. I need to hurry up and go with bigger turbo(s).

[NJrep335I]

Terry,

I'm not in the market as of yet but have a question. When you refer to the Cobb as the Flash loader I assume you load the tune onto the Cobb then flash as normally. Would you be able to use the Cobb to load Flashes on other vehicles or would it still be Vin locked. Is there a generic option that you could upload the Flash with?

[drfrink24]

Map sensor needs to be swapped at some point, right?

[Terry @ BMS]

Cobb is required to load the flash and they VIN lock. Yes we have 3.5 bar TMAP support with the JB4 already.

[Vroom]

[Russell @ BMS]

[mmx]

[bnk]

Awesome Terry!

[G.I.Joe]

This is excellent news. You know I ordered the Cobb AP already, and I really can't wait to take these RB's to the next level.....

[chuckd05]

sub'd

[lulz_M3]

Originally Posted by drfrink24

Map sensor needs to be swapped at some point, right?

Map sensor voltage scaling can be tweaked using Cobbs ATR software, or Terry can do it using his ATP. You could essentially run whatever size map sensor you wanted. AEM 5 bar anyone?

[mrbillytalent]

So if I buy the Vishnnu turbo kit, I can run a jb4 tune but I need a Cobb AP to install it?
ultra haursepowwaazZZ!

[farbmw]

Sounds great Terry!

So are you a Cobb pro tuner now or the flash is souly JB4 flashes?

[brusk]

Terry will you only be touching fuel and timing tables or will you also be playing with vanos and other options?

[Terry @ BMS]

Originally Posted by lulz_M3

Map sensor voltage scaling can be tweaked using Cobbs ATR software, or Terry can do it using his ATP. You could essentially run whatever size map sensor you wanted. AEM 5 bar anyone?

That may work with Cobb, I don't know, because MAP is 1.25bar and TMAP 2.5bar so they are not similarly scaled. But regardless we do all the TMAP scaling on the JB4 end.

[Terry @ BMS]

Originally Posted by farbmw

Sounds great Terry!

So are you a Cobb pro tuner now or the flash is souly JB4 flashes?

Technically we are a "pro tuner" (paid the $3k and setup a vendor account), but I think I would rather hit myself in the head with a hammer repeatedly than provide one off custom Cobb flash tunes for a living. Dialing in boost is really a PITA and many things I would do on the JB4 end for example are not present on the flash side.

So, we're only doing this to provide back end maps that augment or replace JB4 tuning functions.

[Terry @ BMS]

Originally Posted by brusk

Terry will you only be touching fuel and timing tables or will you also be playing with vanos and other options?

The short answer is yes. We will be doing a variety of large turbo related things on the flash side that are not possible to do with a JB4 alone.

[strayman]

Originally Posted by Terry @ BMS

The short answer is yes. We will be doing a variety of large turbo related things on the flash side that are not possible to do with a JB4 alone.

well i answer here, i have a cps and jb4 with coolingmist integrated add 50
and 35 shot, the cps when run? at n2o is enabled in map 3?

[Terry @ BMS]

For the G4 w/ CPS you would enable nitrous trigger integration to keep the CPS active while meth is flowing. We don't provide email support for nitrous but there are several threads on this forum you can track down, and a few members who use it who may be able to provide some advice.

[farbmw]

Originally Posted by Terry @ BMS

Technically we are a "pro tuner" (paid the $3k and setup a vendor account), but I think I would rather hit myself in the head with a hammer repeatedly than provide one off custom Cobb flash tunes for a living. Dialing in boost is really a PITA and many things I would do on the JB4 end for example are not present on the flash side.

So, we're only doing this to provide back end maps that augment or replace JB4 tuning functions.

Good stuff, I have been waiting on you for this!!

[BES335xi]

Would be fun if one of Shiv's customers comes through and Tune the Single with JB4+Cobb.
Awesome stuff though Terry, Looking to get in a 135i soon and dump the XI and put some RB's in!

[xbox_fan]

so if I would send BMS my ecu, could you flash it for me (so I don't have to spend $900 on a AP)?

[Terry @ BMS]

Originally Posted by xbox_fan

so if I would send BMS my ecu, could you flash it for me (so I don't have to spend $900 on a AP)?

No, we're not really interested in being in the flash tune market any more than we need to be. Posting these free flash maps is about as involved as I see us being.

[Ramjet]

Terry,

I have RB's and I just bought the G5, how will the flash affect that vs the G4?