Sold: Socal JB4 for sale

[LcKenji]

Hello,

Been running the JB4 on my car for about 6 months and realized I have a ecu that is early enough to go full unlock and tune. So I'm posting this up for sale as its hard to get in california. I had to jump through hurdles to get it here and hope it could be enjoyed by someone else here on the forum.

Has the bluetooth module so you can change maps from your phone.

The app does cost $27 in the app store just a heads up.

Selling it for $500

Attaching photos of it on the car and after I took it out. It's ready for its next owner.

Sponsored

 

[SD_MK]

PM me more details, and what general area you are located, i have a buddy who might be interested since his car has a locked DME.

 

[raijin]

does it void warranty/show up on the ECU? If not I'll take it.

 

[LcKenji]

does it void warranty/show up on the ECU? If not I'll take it.

Well i would suggest detaching it when you go in for service. you can leave the wires just unplug them and connect the stock stuff back. And as soon as you leave the dealership reconnect it. It doesnt reflash your ECU. What it does it trick your MAF sensor to provide more boost essentially.

 

[raijin]

Well i would suggest detaching it when you go in for service. you can leave the wires just unplug them and connect the stock stuff back. And as soon as you leave the dealership reconnect it. It doesnt reflash your ECU. What it does it trick your MAF sensor to provide more boost essentially.

DM'd

 

[zrk]

does it void warranty/show up on the ECU? If not I'll take it.

This is a quote from an unrelated post on a different forum, but it's relevant:
---------

Now to the second most asked question: "What happens to my Warranty?"

We have went over the warranty aspect many times before, but lets give this one more shot and lay this subject to rest.

Any Modification to the vehicle, big or small, can void a part of your warranty. Be it muffler change, speaker upgrade or putting on an air ride. But order for the dealer to void your warranty, dealer has to prove that this specific modification is a direct reason your are experiencing the failure.

Example: Installation of aftermarket subs in the trunk can not be a reason for voided warranty of failed transmission. However, improperly installed amplifier/subs that cause extreme voltage spikes (think about giant subs pulling KWs of energy), can void your transmission warranty if dealer can prove that during trans failure, your voltage dropped below certain point.


Void Warranty Vs "Detectability"
There are quite a few manufactures of aftermarket tuning products claiming that their product is not detectable to a dealer. Yes, that can be very much so as dealer won't be able to tell you what product you had installed (unless of course you left the product in when you took the car to dealer) at the time of failure, but what the dealer WILL in all certainty be able to tell is the fact that your vehicle was performing above preset parameters at time of failure.

As of later 2019, BMW no longer checks your Engine or Transmission modules for checksums/CVNs and other fingerprints of modified files. What they do now is check your acceleration, boost, airmass, and 20+ other parameters. They read those values from few modules around the car, one of them is being ABS.
One of the most important parameters ABS records now is air mass flow and acceleration values. Each time the vehicle is plugged into the dealer tool (ISTA), all of these values are read out and compared against a database values for specific chassis. If these values pass the preset parameters (of course account for % of error), ISTA throws an internal error code "Suspected Engine Tuning" and flags your vehicle on internal database. Of course BMW will not use this as a reason to void your navigation, headlights or most body parts warranty claims, but rest assured that if your turbo fails, you will be presented with a fat bill and warranty be denied based on that flag along.

But what about piggyback boxes that claim undetectable????
Ask yourself this simple question: "By installing this box, did my vehicle become noticeably faster?"
If you answered "YES", then congratulations, your box works as advertised but you just passed acceleration threshold and now you are flagged.
If you answered "NO", then congratulations, your warranty is probably still intact, but you paid $$$ for a useless gizmo box.

Either way you turn it, remember that BMW is smart and has teams of engineers working on detecting any tuning or modifications. And no, a piggyback can not trick or block acceleration reading since ABS picks up that data directly from speed sensors in each wheel as well as uses GPS to eliminate false positives readings, such as dyno runs. If anything, unlike proper flash tuning, piggy back leaves minor evidence of being plugged into the wastegate/boost sensors. Those small traces/marks on physical sensor (and fact that now BMW is starting to mark these sensors with dab of paint) is usually enough for a dealer to know that the car was modified, way before they pull acceleration data.

Moral of the warranty story: Got to pay to play. The moment you made your vehicle accelerate faster, by any means, then it is supposed to, you get flagged. So in the end of the day, forget about warranty question and assume your warranty VOID. For a vehicle that is used like it is supposed to and does not get transported from dyno to dyno, your real question should not be who makes the most power, but instead "who did Toyota TRD choose to tune the first pre-production Supra and most importantly, Why."

 

[zrk]

That all said, it really depends on what your warranty issue is. Will a JB4 get you flagged for a door panel issue, or something, probably not. The manufacturer needs to prove it was your modification that caused the issue in question.

 

[raijin]

This is a quote from an unrelated post on a different forum, but it's relevant:
---------

Now to the second most asked question: "What happens to my Warranty?"

We have went over the warranty aspect many times before, but lets give this one more shot and lay this subject to rest.

Any Modification to the vehicle, big or small, can void a part of your warranty. Be it muffler change, speaker upgrade or putting on an air ride. But order for the dealer to void your warranty, dealer has to prove that this specific modification is a direct reason your are experiencing the failure.

Example: Installation of aftermarket subs in the trunk can not be a reason for voided warranty of failed transmission. However, improperly installed amplifier/subs that cause extreme voltage spikes (think about giant subs pulling KWs of energy), can void your transmission warranty if dealer can prove that during trans failure, your voltage dropped below certain point.


Void Warranty Vs "Detectability"
There are quite a few manufactures of aftermarket tuning products claiming that their product is not detectable to a dealer. Yes, that can be very much so as dealer won't be able to tell you what product you had installed (unless of course you left the product in when you took the car to dealer) at the time of failure, but what the dealer WILL in all certainty be able to tell is the fact that your vehicle was performing above preset parameters at time of failure.

As of later 2019, BMW no longer checks your Engine or Transmission modules for checksums/CVNs and other fingerprints of modified files. What they do now is check your acceleration, boost, airmass, and 20+ other parameters. They read those values from few modules around the car, one of them is being ABS.
One of the most important parameters ABS records now is air mass flow and acceleration values. Each time the vehicle is plugged into the dealer tool (ISTA), all of these values are read out and compared against a database values for specific chassis. If these values pass the preset parameters (of course account for % of error), ISTA throws an internal error code "Suspected Engine Tuning" and flags your vehicle on internal database. Of course BMW will not use this as a reason to void your navigation, headlights or most body parts warranty claims, but rest assured that if your turbo fails, you will be presented with a fat bill and warranty be denied based on that flag along.

But what about piggyback boxes that claim undetectable????
Ask yourself this simple question: "By installing this box, did my vehicle become noticeably faster?"
If you answered "YES", then congratulations, your box works as advertised but you just passed acceleration threshold and now you are flagged.
If you answered "NO", then congratulations, your warranty is probably still intact, but you paid $$$ for a useless gizmo box.

Either way you turn it, remember that BMW is smart and has teams of engineers working on detecting any tuning or modifications. And no, a piggyback can not trick or block acceleration reading since ABS picks up that data directly from speed sensors in each wheel as well as uses GPS to eliminate false positives readings, such as dyno runs. If anything, unlike proper flash tuning, piggy back leaves minor evidence of being plugged into the wastegate/boost sensors. Those small traces/marks on physical sensor (and fact that now BMW is starting to mark these sensors with dab of paint) is usually enough for a dealer to know that the car was modified, way before they pull acceleration data.

Moral of the warranty story: Got to pay to play. The moment you made your vehicle accelerate faster, by any means, then it is supposed to, you get flagged. So in the end of the day, forget about warranty question and assume your warranty VOID. For a vehicle that is used like it is supposed to and does not get transported from dyno to dyno, your real question should not be who makes the most power, but instead "who did Toyota TRD choose to tune the first pre-production Supra and most importantly, Why."

Thanks! New here, and new to tuning, so this helped my understanding a lot

 

[Lockeda91]

Hello,

Been running the JB4 on my car for about 6 months and realized I have a ecu that is early enough to go full unlock and tune. So I'm posting this up for sale as its hard to get in california. I had to jump through hurdles to get it here and hope it could be enjoyed by someone else here on the forum.

Has the bluetooth module so you can change maps from your phone.

The app does cost $27 in the app store just a heads up.

Selling it for $500

Attaching photos of it on the car and after I took it out. It's ready for its next owner.

Hey. Do you still have it? I’m interested and I’m in texas
Are you willing to ship

Sponsored