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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 > JB4 G5 ISO + BMS flash Discussion



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      12-07-2012, 08:58 PM   #1
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JB4 G5 ISO + BMS flash Discussion

please post your intel, comments, logs in this thread for all running JB4 G5 ISO + BMS flash Discussion
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      12-07-2012, 11:54 PM   #2
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How well does the JB4 compare to Vishnu's Proceed in terms of overall performance?
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      12-08-2012, 12:22 AM   #3
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Not sure, but g5 plus bms flash is smooth as silk power. Hard to describe but it's everything you want in a muscle car.
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      12-08-2012, 01:09 AM   #4
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Quote:
Originally Posted by neilvosko View Post
Not sure, but g5 plus bms flash is smooth as silk power. Hard to describe but it's everything you want in a muscle car.
But but our cars don't have V8's..
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      12-08-2012, 01:51 AM   #5
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Here is a log with a VERY low E85 mix and only a 60 additive...hitting 20 psi no problems with 40% amd 70 additive...just got the 3.5 bar map sensor so will crank them up and see!
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      12-08-2012, 01:55 AM   #6
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Quote:
Originally Posted by oddspelling
How well does the JB4 compare to Vishnu's Proceed in terms of overall performance?
Performance? About equal, neither takes the cake and it can be a case by case scenario. The G5 with isolated boost control seems to make the JB4 G5 push out better numbers on the dyno. Some seem to think the Procede is smoother (mines not terribly smooth, ill be the first to say it). In short: neither is an absolute winner, in the performance field. Both have pros/cons as far as utilities and features.

Also, something to consider is customer service. I own a Procede, but can tell you this: Terry@BMS has the best customer service, bar none. Highly recommend him. Its a clear choice if you do your homework, and look at many sources (excluding Bimmerpost). Terry has helped me solve issues with my Procede that Shiv was too busy for.
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      12-08-2012, 03:20 AM   #7
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Quote:
Originally Posted by Eric335 View Post
Terry@BMS has the best customer service, bar none. Highly recommend him. Its a clear choice if you do your homework, and look at many sources (excluding Bimmerpost). Terry has helped me solve issues with my Procede that Shiv was too busy for.
This was my deciding factor...I literally sent 47 emails to Terry today with a meth nozzle problem...EVERY email was replied to with in minutes. I think both shiv & Terry have a great product, I cant state anything on shivs customer service since I have never dealt with him directly
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      12-08-2012, 03:22 AM   #8
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The flash lowered my fuel trims from what they are above (Very low) to almost always maxed out, constant misfires are gone, low pressure codes are gone....fuel pressure diving at high boost psi is gone. No need for SLD or Down pipe fix with flash...fuel trim ceiling raised...buttery smooth. No brainer GET it!
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      12-08-2012, 07:04 AM   #9
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Quote:
Originally Posted by robc1976 View Post
Here is a log with a VERY low E85 mix and only a 60 additive...hitting 20 psi no problems with 40% amd 70 additive...just got the 3.5 bar map sensor so will crank them up and see!
Those fuel trims are amazing I can only get that type of fuel trims running E50 and methanol when it's 90+ degrees outside. My trims are so elevated right now because it dips below 70 degrees during the evening hours that I've been having to dial back my boost to 16.5psi for these "winter" months
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      12-08-2012, 08:21 AM   #10
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Quote:
Originally Posted by robc1976
Quote:
Originally Posted by Eric335 View Post
Terry@BMS has the best customer service, bar none. Highly recommend him. Its a clear choice if you do your homework, and look at many sources (excluding Bimmerpost). Terry has helped me solve issues with my Procede that Shiv was too busy for.
This was my deciding factor...I literally sent 47 emails to Terry today with a meth nozzle problem...EVERY email was replied to with in minutes. I think both shiv & Terry have a great product, I cant state anything on shivs customer service since I have never dealt with him directly
Yeah this is what i experienced as well. I sent Shiv 3 emails in the course of 3 months and never got a single damn reply. Terry responded to my question within 10 minutes and was able to have my problem fixed over night, and it wasnt even his tune he was working on! True customer service and love for the N54 community right there.
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      12-08-2012, 09:35 AM   #11
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Quote:
Originally Posted by neilvosko View Post
please post your intel, comments, logs in this thread for all running JB4 G5 ISO + BMS flash Discussion
You won't find much info here on it. Everything is posted on BMS' forum.

Mike
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      12-08-2012, 10:06 AM   #12
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Let's just say it's probably the best tune combination you can run at this time.
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      12-08-2012, 11:40 AM   #13
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I can not comment on BMS flash, due to not having the cobb. I did upgrade from G4 board to G5 ISO and the difference is very noticeable. My car is my DD and the smoothness of DD is just like stock (once the car is warmed up). Under load the boost is more consistent and pulls hard all the way through the power band. If you car considering JB4 G5, go for it!!
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      12-08-2012, 11:49 AM   #14
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I've been playing with various N54s since 07 and I'm here to tell you that the G5 ISO is the best it's ever been by a substantial amount. The car 100% feels like it came from the factory with the increased power when running map 1 (13 psi). The power comes in a smoothly as stock, the power through the rpm range is smooth as silk, etc. I'm actually averaging about 1.5 mpg better on the interstate as well since the ISO firmware allows the engine to utilize a bit more of it's own torque before blending in some boost. Example would be when the car was stock, or even non-ISO, it would be sitting at 1-2 psi once my instant consumption on the MFD read around 21 mpg. Now I don't see any boost blended in until the MFD reads abou 18 mpg instant. While that doesn't sound like a big deal, it lessens the amount of precharging that occurs which does have a noticeable improvement in fuel economy.

I've been playing with turbocharged platforms for well over a decade now and Terry has the best customer service of any vendor I have ever used, bar none.
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      12-08-2012, 01:24 PM   #15
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
You won't find much info here on it. Everything is posted on BMS' forum.

Mike
LOL!! true!
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      12-08-2012, 01:26 PM   #16
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Quote:
Originally Posted by spool twice View Post
Those fuel trims are amazing I can only get that type of fuel trims running E50 and methanol when it's 90+ degrees outside. My trims are so elevated right now because it dips below 70 degrees during the evening hours that I've been having to dial back my boost to 16.5psi for these "winter" months
Get the flash, it is amazing man!! takes 20 mins to load and it is the longest 2o mins of your life because you arevso excited
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      12-08-2012, 01:51 PM   #17
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is it possible to flash the bms file with a cobb that is married to another car?

I have a friend with cobb ap, that could be used on my car...
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      12-08-2012, 03:00 PM   #18
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Quote:
Originally Posted by marconi118 View Post
is it possible to flash the bms file with a cobb that is married to another car?

I have a friend with cobb ap, that could be used on my car...
Nope, once its married to a car, it has to be unmarried to be used in a different car. All that you can do with the device if its married to another car is datalog and read/clear codes.
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      12-09-2012, 09:44 AM   #19
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Previous to owning my 09 335XI, i used Cobb/ATR on my 09 WRX and 11 STI with great results, it is a great product and ATR is very user friendly and offers wide tuning capability. With that said, after much research i got the JB4 G4 and was impressed and recently upgraded to the G5 ISO and am more impressed. BMS's customer support is the best i've seen and can't say enough about it. The ISO board is strong and smooth, no complaints. I just miss the ability to self tune the way i could with Cobb. I probably will add Cobb again in the future to this car, the only reason i haven't is i have been reluctant to mark the DME.
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