Any 35D Owners install this performance tune?

[Terry @ BMS]

The JBD is a simple PnP tune that alters the fuel rail pressure. There are almost 200 out in use now and they work great. It is based around our JB+ gasoline tuner of which there are over 2500 out over the past few years with zero reported issues. We've monitored EGT among other parameters and feel the algorithm used is well within the safety limits of the BMW diesel motor.

It's based around an 18F processor @ 8mhz. A much simpler processor could handle the task but we just used the faster than needed 18F for it as we use them in other applications and buy them in bulk. I don't believe the tuning can be easily implemented using discrete components (e.g. resistors/diodes/caps) as it requires many non-linear functions. It would take a circuit board full of components vs. a using a single micro controller with atod/dtoa.

The inside of the JBD is similar to our JB+:



We have a 14 day guarantee on them and are happy to extend that to 30 days if any xpost users would like to do an extended comparison, dyno testing, etc.

The JB4 for gasoline motors is a much more complex product, featuring can integration, built in code reading/deleting, in dash gauges, steering wheel control map switching, and huge power gains. But if you have a 335D or X5D our JBD tuner is one of the few options for gaining power while avoiding codes on USA spec cars.

[Aidan]

Originally Posted by Terry @ BMS

The JBD is a simple PnP tune that alters the fuel rail pressure. There are almost 200 out in use now and they work great. It is based around our JB+ gasoline tuner of which there are over 2500 out over the past few years with zero reported issues. We've monitored EGT among other parameters and feel the algorithm used is well within the safety limits of the BMW diesel motor.

It's based around an 18F processor @ 8mhz. A much simpler processor could handle the task but we just used the faster than needed 18F for it as we use them in other applications and buy them in bulk. I don't believe the tuning can be easily implemented using discrete components (e.g. resistors/diodes/caps) as it requires many non-linear functions. It would take a circuit board full of components vs. a using a single micro controller with atod/dtoa.

The inside of the JBD is similar to our JB+:



We have a 14 day guarantee on them and are happy to extend that to 30 days if any xpost users would like to do an extended comparison, dyno testing, etc.

The JB4 for gasoline motors is a much more complex product, featuring can integration, built in code reading/deleting, in dash gauges, steering wheel control map switching, and huge power gains. But if you have a 335D or X5D our JBD tuner is one of the few options for gaining power while avoiding codes on USA spec cars.

Hello.
Firstly, Can you post a photo of the inside of a JB Diesel tuning box. The above photo you posted is of the inside of a petrol tuning box application which is totally different and irrelevant as to what this thread is about.

I would like to see a photo of the inside of the tuning box you sell for the diesels named JBD with a green and red wire coming from it.

If you somehow have no photo of it, can you confirm that the box does not consist of a resistor?

Thanks,
Aidan

[Terry @ BMS]

Originally Posted by Aidan

Hello.
Firstly, Can you post a photo of the inside of a JB Diesel tuning box. The above photo you posted is of the inside of a petrol tuning box application which is totally different and irrelevant as to what this thread is about.

I would like to see a photo of the inside of the tuning box you sell for the diesels named JBD with a green and red wire coming from it.

If you somehow have no photo of it, can you confirm that the box does not consist of a resistor?

Thanks,
Aidan

Attached is a "xposed xxx" photo from our 2010 X5D. The board consists of a single 18F2431 processor, analog input, PWM - LPF output, and trim pot for user adjustment. Not an overly complicated product but it doesn't need to be. If it were possible to implement the same logic with discrete components we happily would.

I think you are confusing real piggyback chip tuners with eBay "resistor" scams.

[JCL]

Originally Posted by Terry @ BMS

Attached is a "xposed xxx" photo from our 2010 X5D. The board consists of a single 18F2431 processor, analog input, PWM - LPF output, and trim pot for user adjustment. Not an overly complicated product but it doesn't need to be. If it were possible to implement the same logic with discrete components we happily would.

Which analog inputs do you read with the box?

[JCL]

More fans of xoutpost:

Discussion about tunes on another forum - N54TECH.COM : BMW N54 / N55 Turbo Performance forum

[Terry @ BMS]

Originally Posted by JCL

Which analog inputs do you read with the box?

It's not difficult to figure that one out, LOL.

No offense but clearly you're not up to speed on tuning and I don't have any intent to further along your education. I just wanted to post and refuse the obvious false claims you were making about our JBD tuner. But our offer still stands. Throw it on a dyno and see what you think and return it if it doesn't do what we claim it will. Tuned the X5D is a night and day difference vs. stock. Not bad for $279 and a few minutes of install/removal time.

[mikejabb]

JCL –
Bimmerpost (which e90post is part of) is a huge for-profit business. :cue infomercial analogy:

You will find biases on any forum. However, you are more likely to see honest and open discussion on n54tech. It tends to be a bit more mature of a group overall as well. Yes, it is owned & hosted by Terry Burger of BMS. He makes no secret about it. n54tech is a true open forum where anyone can voice their opinions & experiences positive OR negative. As a longtime member, I have never seen any posts on n54tech be deleted. I can’t say this of e90post where posts and entire threads vanish on a daily basis. If people are looking for information on BMS products above & beyond what’s found on the sales site they wont go wrong on n54tech.

Kloggy -
I agree with JCL, ranking is all relative. The major US tuners in alphabetical order:
- BMS
- Cobb
- Dinnan
- GIAC
- Vishnu (Proceede)

[Aidan]

Originally Posted by mikejabb

JCL –
Bimmerpost (which e90post is part of) is a huge for-profit business. :cue infomercial analogy:

You will find biases on any forum. However, you are more likely to see honest and open discussion on n54tech. It tends to be a bit more mature of a group overall as well. Yes, it is owned & hosted by Terry Burger of BMS. He makes no secret about it. n54tech is a true open forum where anyone can voice their opinions & experiences positive OR negative. As a longtime member, I have never seen any posts on n54tech be deleted. I can’t say this of e90post where posts and entire threads vanish on a daily basis. If people are looking for information on BMS products above & beyond what’s found on the sales site they wont go wrong on n54tech.

Kloggy -
I agree with JCL, ranking is all relative. The major US tuners in alphabetical order:
- BMS
- Cobb
- Dinnan
- GIAC
- Vishnu (Proceede)

I think people would be happier if they knew how a product works and what it consists of and the technicalities of it.
I don't see why members should jump and join other forums to obtain feedback from different people.
At the end of the day, this thread is about a little black with two wires, it is not rocket science.

I await an internal photo of the diesel tuning box from Terry

[mikejabb]

Originally Posted by Aidan

I don't see why members should jump and join other forums to obtain feedback from different people.

If you actually believed that Aidan, you wouldnt be a memeber here. You'ld be browsing the general BMW section on CarForums.net - Automotive Chat Forum - CarForums.net - Your Number One Source For Automotive Discussion

[JCL]

Originally Posted by mikejabb

JCL –
Bimmerpost (which e90post is part of) is a huge for-profit business. :cue infomercial analogy:

You will find biases on any forum. However, you are more likely to see honest and open discussion on n54tech. It tends to be a bit more mature of a group overall as well. Yes, it is owned & hosted by Terry Burger of BMS. He makes no secret about it. n54tech is a true open forum where anyone can voice their opinions & experiences positive OR negative. As a longtime member, I have never seen any posts on n54tech be deleted. I can’t say this of e90post where posts and entire threads vanish on a daily basis. If people are looking for information on BMS products above & beyond what’s found on the sales site they wont go wrong on n54tech.

No dispute on e90post, but I enjoyed the fact that there was information on several vendors there, not just one. We were talking about doing research, and vendor sites tend to be a little one-sided in my experience. Still valuable: I check www.bmw.ca, for example, but I don't go there for opinions.

I just looked to find the last Procede thread on n54tech, found one, and the second post was "you better ask the owner of this site about this" That is the sort of bias that I am referring to.

I was reading about detection of tunes a while back, and I found much more mature responses on e90post, not at all vendor specific. Good perspectives on the MM act, and what it doesn't cover. There was a similar thread on n54tech, but it centred on an owner who left his meth lines in when he went in for service, the dealer found them, and declined to warrant his fuel injector failure. The comments and suggestions gave more misinformation on the MM act. The whole thread sounded like teenagers caught after crashing dad's car.

I do know what you mean about the petty wars that went on. I think that one just has to sort through such things, it is part of life on the internet.