[Jeff@TopGearSolutions]

Originally Posted by InCityPhoto

Because I want to know?

Write a letter to BMW.

Edit- To the people claiming these cars are still around today....

There was a time in this community when anything past 12 PSI was too much. That wasnt too long ago actually.

[Jeff@TopGearSolutions]

Maybe this is what you want to know?

No matter what knock severity you have the Logic pulls 3 degrees ignition.

The car doesnt know the severity of the knock to interpret how much ignition to pull. It just knows that knock makes certain noise frequencies and when that occurs it pulls ignition.

I think nobody is answering your question cause nobody understands what your still asking, probably cause it cant be answered.

Edit- BTW this is also the downfall in the stock logic for INCREASED boost, as a 3 degrees pull in timing might not be enough on high boost, which results in multiple knocks.

I think that has been said like 48 times.

[shifterboy45]

Originally Posted by InCityPhoto

Don't be rude, and please specify these area's.




Thank goodness, Clap says you can answer this =D

thanks for the vote of confidence

one thing im not into doing pre-solving your comprehesion of the technology, but i have willingly layed out a reasonable picture - i participate on this forum to help people, but im still responsible for a lot of other stuff.

im sure you will be able to google enough solid information to calculate the intake volume (pressurized) -- cylinder volume - quench -- bore/stroke. there are plenty of articles on how to calculate peak cylinder pressures and so forth.

if you take this task on, rather than get a regurjatated answer, you probably find it interesting and helpful too.

[kenneth]

This sounds kind of familiar to me! Today our new hires are not what the new hires were years ago. To say we hire them for big bucks to use their brains, but many want us to explain to them why they are wrong, instead of them putting the effort to either get things correctly, or to convince us why they are right. It gets so exhausting. Generation gap?

Not saying it is the case here though........

[Jake@MOTIV]

Originally Posted by RambleJ

There still hasn't really been anything brought forth in this discussion. Obviously the way the JB3/4 goes about it, is unethical to most "tuners", but most tuners do not work with an N54 engine. A couple here have advanced timing is some shape or form and that is fine and dandy. But the point still being, we still are not seeing the long term damage from the use of JB3/4's anywhere. Until I see that, all this is purely scepticism. This obviously brings to the table that in fact the sock ECU is capable of handling and working with what the JB tunes put to use.

Unfortunately you couldn't be further from being correct. You have just been led to believe that the n54 is different. The way the dme does things is no different from other modern day ecu's. Mazdaspeeds, subi's, evo's all utilize knock retard (pulling timing based on knock sensor feedback etc). You simply can't see through the bullsh*t that you have been fooled into thinking was actually fact. It isn't your fault so don't think this is an attack on you.

[shifterboy45]

Originally Posted by FlyLow335i

Unfortunately you couldn't be further from being correct. You have just been led to believe that the n54 is different. The way the dme does things is no different from other modern day ecu's. Mazdaspeeds, subi's, evo's all utilize knock retard (pulling timing based on knock sensor feedback etc). You simply can't see through the bullsh*t that you have been fooled into thinking was actually fact. It isn't your fault so don't think this is an attack on you.

that bowl is starting to become distracting !!! put some foil on the top damn it !!

[shifterboy45]

Originally Posted by kenneth

This sounds kind of familiar to me! Today our new hires are not what the new hires were years ago. To say we hire them for big bucks to use their brains, but many want us to explain to them why they are wrong, instead of them putting the effort to either get things correctly, or to convince us why they are right. It gets so exhausting. Generation gap?

Not saying it is the case here though........

whether its generational or not -- there is something in the water around here.

ive never heard the question, which tune should i run so often.. but then again when i started working on cars there was no internet, and the best we could tell (electronically) how the car was running was looking at a parade or raster spark line pattern

[Jeff@TopGearSolutions]

Originally Posted by shifterboy45

whether its generational or not -- there is something in the water around here.

ive never heard the question, which tune should i run so often.. but then again when i started working on cars there was no internet, and the best we could tell (electronically) how the car was running was looking at a parade or raster spark line pattern

Def something in the water in florida....that much i know.

[RambleJ]

Originally Posted by FlyLow335i

Unfortunately you couldn't be further from being correct. You have just been led to believe that the n54 is different. The way the dme does things is no different from other modern day ecu's. Mazdaspeeds, subi's, evo's all utilize knock retard (pulling timing based on knock sensor feedback etc). You simply can't see through the bullsh*t that you have been fooled into thinking was actually fact. It isn't your fault so don't think this is an attack on you.

So what you are saying is that if you would throw the same type of tune JB3/4 on a Mazda or Subie with no timing control aside from the stock form, they would have lasted this long? Come on now! Gimme a break
At least admit that there is some differences and admit that this ECU can handle what is being done to it.

[Clap135]

Originally Posted by RambleJ

So what you are saying is that if you would throw the same type of tune JB3/4 on a Mazda or Subie with no timing control aside from the stock form, they would have lasted this long? Come on now! Gimme a break
At least admit that there is some differences and admit that this ECU can handle what is being done to it.

They wouldnt last long becuase the motors arent as strong. Most ms3s blow sky high at part throttle at like 2-3psi of boost....

[RambleJ]

Originally Posted by gbreeE90

Well its only been out for 4 years.

Only 4 years?? With the way you guys are downplaying the way the JB3/4 tunes the engines it shouldn't have lasted months...yet alone years....

[Forcefed3]

Originally Posted by RambleJ

So what you are saying is that if you would throw the same type of tune JB3/4 on a Mazda or Subie with no timing control aside from the stock form, they would have lasted this long? Come on now! Gimme a break
At least admit that there is some differences and admit that this ECU can handle what is being done to it.

Yeah, I dont think any tune hurts the ECU.

[RambleJ]

Originally Posted by gbreeE90

Yeah, I dont think any tune hurts the ECU.

You know what i mean, the stock ECU can work with what the JB3/4 is doing without causing engine damage. If the tune is used properly.
Look at the quantifiable data.
How many JB3's are out there?
How many miles have they put while tuned?
How much damage are we seeing?

If the ECU was not able to work accordingly we would see engine damage left and right correct?

And don't gimme that just wait... Cause i will be waiting way too long as we have already seen, cause that was said a while ago.

[Forcefed3]

Originally Posted by RambleJ

You know what i mean, the stock ECU can work with what the JB3/4 is doing without causing engine damage. If the tune is used properly.
Look at the quantifiable data.
How many JB3's are out there?
How many miles have they put while tuned?

If the ECU was not able to work accordingly we would see engine damage left and right correct?

I dont think the JB is doing massive damage. I just think it is going to accumulate over time. I think in a few years we will see failures.

[Jeff@TopGearSolutions]

Originally Posted by RambleJ

So what you are saying is that if you would throw the same type of tune JB3/4 on a Mazda or Subie with no timing control aside from the stock form, they would have lasted this long? Come on now! Gimme a break
At least admit that there is some differences and admit that this ECU can handle what is being done to it.

Nobody said that, and they wont last long cause they dont have strong motors. Which is why you see most subaru's not making over 350WHP stock motor for too long.

Originally Posted by Clap135

They wouldnt last long becuase the motors arent as strong. Most ms3s blow sky high at part throttle at like 2-3psi of boost....

[techlogik]

Originally Posted by JPSlick

Def something in the water in florida....that much i know.

I have soft water and drink bottled/purified only...not the tap shit down here..haha

[RambleJ]

Originally Posted by JPSlick

Nobody said that, and they wont last long cause they dont have strong motors. Which is why you see most subaru's not making over 350WHP stock motor for too long.

Then they are not on the same level as our cars and should be compared as such.

[Jake@MOTIV]

I swear to god they are getting dumber as we go.

[Clap135]

Originally Posted by FlyLow335i

I swear to god they are getting dumber as we go.

Its the evening rush of stupidity...

[Mike@N54Tuning.com]

Originally Posted by JPSlick

Maybe this is what you want to know?

No matter what knock severity you have the Logic pulls 3 degrees ignition.

The car doesnt know the severity of the knock to interpret how much ignition to pull. It just knows that knock makes certain noise frequencies and when that occurs it pulls ignition.

I think nobody is answering your question cause nobody understands what your still asking, probably cause it cant be answered.

Edit- BTW this is also the downfall in the stock logic for INCREASED boost, as a 3 degrees pull in timing might not be enough on high boost, which results in multiple knocks.

I think that has been said like 48 times.

That is completely wrong. Timing is pulled in small increments. Only if knock sensor feedback indicates higher levels of knock does it resort to pulling 3 degrees. This detection is still early enough in the process to prevent ANY damage.

Mike

[Mike@N54Tuning.com]

Originally Posted by gbreeE90

I dont think the JB is doing massive damage. I just think it is going to accumulate over time. I think in a few years we will see failures.

It doesn't really work that way. Pistons are made of metal. They are either bending or they aren't. If they are bending it won't last more than a few engine revolutions before major damage is done.

Mike

[Forcefed3]

Originally Posted by Mike@N54Tuning.com

It doesn't really work that way. Pistons are made of metal. They are either bending or they aren't. If they are bending it won't last more than a few engine revolutions before major damage is done.

Mike

Hopefully I am wrong, after all I am using a JB4