[InCityPhoto]

Originally Posted by Clap135

A knock sensor cannot detech "preknock" thats not even a word btw
It can only react to knock....

And what is your definition of knock? Full detonation?

The knock sensors react to anything that resembles knock frequencies even in the slightest, so would it not make sense that they are reacting as the knock frequencies starts?

Originally Posted by secretsquirrel

They obviously didn't test too hard or long or they would have known about HPFP, injectors, and coil problems with this car. I don't believe that we should have have too much faith in manufacturers. If they really wanted to do what was best for the long term reliability, they would have given us some upgraded IC's.

If you are seriously thinking that a aftermarket tuner has done more research then a company like BMW...

[Clap135]

Originally Posted by ianthegreat

Could the knock be so insignificant that it posed no danger whatsoever to engine internals but easily be read by a computer microchip?

Let's define a "knock."

Yea, this car drops ignition sometimes maintaining cursining speed with nexgt to no throttle inputs. However like i said, as boost/power increases, the same knock event cannot be considered identical when it comes to engine health/durability.

[mithiral67]

Originally Posted by Clap135

No because knock during stock load outputs is not as damaging as knock during raised boost outputs. But if you want it perfect, w/m on a stock car would 100 percent max out that timing curve in the shitty conditions. It would be a little faster, hoenstly if you are stock, you shouldn't bother. As others said, BMW did their RnD for a STOCK car.

So if you lived in a place like Arizona with 100+ degree temps, running meth on a stock car wouldnt give it some power back and make the turbo's work less for the power and provide more power from less timeing drop.

Similar, wouldnt runnig meth on a tune without upping boost and dropping timing help for the pure safety aspect of just pumping denser cooler air and higher octane into the engine.

I just asked, cause the idea of pushing psi above the limit of the fuel with a meth solution is to dangrous because of flow issuing causing serious damage faster than fail safes can react. And the idea of running meth for the solo purpose of making the engine run happier is an nice prospect.

[Clap135]

Originally Posted by InCityPhoto

And what is your definition of knock? Full detonation?

The knock sensors react to anything that resembles knock frequencies even in the slightest, so would it not make sense that they are reacting as the knock frequencies starts?




If you are seriously thinking that a aftermarket tuner has done more research then a company like BMW...

if a knock sensor reacts, it means the motor knocked period. And yes a tuner compnay which doubles the boost, sure as hell did more research at running that boost then bmw did. Thats the whole point of tuning. You dont see tunes coming out running stock boost do you? Well actually according to mike, the jb4 in those conditions would drop boost to stock levels...like i previously said.

[InCityPhoto]

Originally Posted by Clap135

if a knock sensor reacts, it means the motor knocked period. And yes a tuner compnay which doubles the boost, sure as hell did more research at running that boost then bmw did. Thats the whole point of tuning. You dont see tunes coming out running stock boost do you? Well actually according to mike, the jb4 in those conditions would drop boost to stock levels...like i previously said.

If the knock sensor reacts, all that means is that it received the start of a knock frequency.

Prove otherwise.

I never said at certain PSI, he was stating item's that had nothing to do with boost etc.

[Clap135]

Originally Posted by mithiral67

So if you lived in a place like Arizona with 100+ degree temps, running meth on a stock car wouldnt give it some power back and make the turbo's work less for the power and provide more power from less timeing drop.

Similar, wouldnt runnig meth on a tune without upping boost and dropping timing help for the pure safety aspect of just pumping denser cooler air and higher octane into the engine.

I just asked, cause the idea of pushing psi above the limit of the fuel with a meth solution is to dangrous because of flow issuing causing serious damage faster than fail safes can react. And the idea of running meth for the solo purpose of making the engine run happier is an nice prospect.

If you are bone stock, you are def not thinking of meth as your first mod. But yes, it would eliminate all the timing drop out on a car running stock boost.

[Clap135]

Originally Posted by InCityPhoto

If the knock sensor reacts, all that means is that it received the start of a knock frequency.

Prove otherwise.

I never said at certain PSI, he was stating item's that had nothing to do with boost etc.

Start of knock, is still knock though.

Thats like saying just the tip is not sex.....

[Joshboody]

Originally Posted by mithiral67

So if you lived in a place like Arizona with 100+ degree temps, running meth on a stock car wouldnt give it some power back and make the turbo's work less for the power and provide more power from less timeing drop.

Similar, wouldnt runnig meth on a tune without upping boost and dropping timing help for the pure safety aspect of just pumping denser cooler air and higher octane into the engine.

I just asked, cause the idea of pushing psi above the limit of the fuel with a meth solution is to dangrous because of flow issuing causing serious damage faster than fail safes can react. And the idea of running meth for the solo purpose of making the engine run happier is an nice prospect.

yes

[Clap135]

Originally Posted by lemanse92

I wouldnt consider that sex hahha..but do agree to the first part

Ask your wife/gf, let me knwo if she agrees lol. I got a extra bedroom for you btw...

[Jeff@TopGearSolutions]

[Clap135]

I dunno what woman would agree with that. As for the extra bedroom comment, that when she kicks your ass to the curb, you can crash in my extra bedroom if you want. It was a joke....anyway.

[InCityPhoto]

Originally Posted by Clap135

Start of knock, is still knock though.

Thats like saying just the tip is not sex.....

Start of knock frequency's, not the actual "knock" itself. Thats like the movement you make before you lift the hammer, makes a noise that it react's to, then correct's itself so the hammer never hits.

And it should do this over and over again to make sure that no "knock" occurs.

It is how the system was designed to work, at whatever PSI you put through it, Its doing its job.

[ianthegreat]

Originally Posted by Clap135

Yea, this car drops ignition sometimes maintaining cursining speed with nexgt to no throttle inputs. However like i said, as boost/power increases, the same knock event cannot be considered identical when it comes to engine health/durability.

How do we judge the severity of a knock interval?

[Clap135]

Originally Posted by ianthegreat

How do we judge the severity of a knock interval?

on most cars, with knock sensor voltages. This car, the voltages i logged are sort of useless. However the main goal of tuning, it to avoid knock to begin with, not react to it. So in essence if you preset a timing curve with flashing or offseting, you will now avoid knock to begin with for the most part, and if conditions drastically go south, you have the stock bmw programming as a back up if you want to run jb4 style.

[mithiral67]

ha, ok, probably should search first but i doubt many have asked cause most folks on here wouldnt spend 1g on a mod that might provide 5-20 more hps when you could get 40-60 more out of it on top of a tune, but how do you run meth without a tune? Are there kits for that?

[Clap135]

Originally Posted by mithiral67

ha, ok, probably should search first but i doubt many have asked cause most folks on here wouldnt spend 1g on a mod that might provide 5-20 more hps when you could get 40-60 more out of it on top of a tune, but how do you run meth without a tune? Are there kits for that?

you can run a basic meth kit for 200 bucks on a stock tune no problem.

[InCityPhoto]

Originally Posted by Clap135

on most cars, with knock sensor voltages. This car, the voltages i logged are sort of useless. However the main goal of tuning, it to avoid knock to begin with, not react to it. So in essence if you preset a timing curve with flashing or offseting, you will now avoid knock to begin with for the most part, and if conditions drastically go south, you have the stock bmw programming as a back up if you want to run jb4 style.

I believe (unless you can show me otherwise) that the OEM knock sensors do a damn good job continually reading and monitoring to preventing actual "knock."

If they didn't wouldn't you think that there would be blown up N54's everywhere?

[Clap135]

Originally Posted by lemanse92

However boost is still above stock correct? or at least before autotuning was present

Well yea, as you add boost, you have to drop timing if you use an ecu that rides the knock sensor, which the n54 does.

[Clap135]

Originally Posted by InCityPhoto

I believe (unless you can show me otherwise) that the OEM knock sensors do a damn good job continually reading and monitoring to preventing actual "knock."

If they didn't wouldn't you think that there would be blown up N54's everywhere?

I believe you are wrong, the only reason we dont see more blown n54s is because the engine is basically bulletproof for anyone on stock turbos....

Can't think of many cars on the market that can take 150whp on top of stock output while spinning turbos out of the their maps without throwing rods or melting pistons.

[E90PAT]

Originally Posted by Clap135

Start of knock, is still knock though.

Thats like saying just the tip is not sex.....

lol if you consider that sex then you needa get off the forums

[InCityPhoto]

Originally Posted by Clap135

I believe you are wrong, the only reason we dont see more blown n54s is because the engine is basically bulletproof for anyone on stock turbos....

Can't think of many cars on the market that can take 150whp on top of stock output while spinning turbos out of the their maps without throwing rods or melting pistons.

I agree that the N54 is strong, at the same time you can not prove how hard the car is knocking during the knock frequency's that the OEM Sensor uses to lower timing.

I know you can hook them up to your car stereo, But again, you have no way to measure them.. Making that useless.

[Clap135]

Originally Posted by E92PAT

lol if you consider that sex then you needa get off the forums

Do i consider that sex? no, does my fiance if I did it to some1 else? Yes. Would I consider that sex if some1 did that to her? Yes

Just like knock, it all depends on who you ask and under what conditions