[STONEY_M5]

Originally Posted by AltecBX

Then why the new v5 maps feel more powerful at same boost compare to the v4 maps?

How can you make more power applying the same boost(psi)?

I would've asked the same thing but it can be done... BMW makes 300/300 in the heat with higher boost and in the cold with LOWEr boost...

Also with advancing timing(I think)

[Clap135]

Originally Posted by Joshboody

what are you saying these's a difference in faking the load target compared to scaling it, as I imagine the JB does? No difference the load the DME sees is still way below actual, giving a much higher timing map then required.

Great post. Being that neither piggy back cannot tell the ecu loads over stock, all one has to do is map out the loadvstiming table and the answer will be very clear.

[Clap135]

Originally Posted by JPSlick

Having trouble with that phone keyboard and auto spell check i see

fuck this spell check bullshit, most of my posts are from my phone, half of them dont make sense me after i post, and editing them with the phone is too much of a pita.

[STONEY_M5]

Originally Posted by fisherbln

They could lower timing and increase boost and fuel and they'd be less efficient, but could create the same amount of power (remember, more fuel, same energy = less efficient). You want timing as close to perfect as possible to utilize as much of the energy from the explosion as possible.

ok I have a question, why is thre so much gunk left over from un burnt fuel, if all of this is supposed to be burnt by perfect ignition? Not being a smartass...

[Clap135]

Originally Posted by Mike@N54Tuning.com

By your definition then any tuning where the ignition advance increases when you add race fuel means tuning that is knocking. So the OEM tuning knocks, all the piggybacks knock, we'll soon see your Cobb tuning knocks as well. /thread.

Mike

That is absolutly correct. Glad you finally got it. Look up load vs timing tables, if the ecu is not hitting them, 99 percent chance you relied on the knock sensor to drop timing. And the cobb tune already knocks, look up ztuners or booms track logs.

[STONEY_M5]

Also isn't one of the main purposes of di to keep the combustion chamber cooler???
If we had a BMW tech on here who was willing to explain we would have a better explanation of how the n54 does whT it does...

[JB4-335]

Here's a JB4 Map 5 Autotune log I did yesterday.
3rd gear WOT.
Only other mod is DCI and ambient was mid 70's.

LOOK AT THAT CURVE.

THANK YOU VERY MUCH!!

[Clap135]

Originally Posted by JB4135

Here's a JB4 Map 5 Autotune log I did yesterday.
3rd gear WOT.
Only other mod is DCI and ambient was mid 70's.

LOOK AT THAT CURVE.

THANK YOU VERY MUCH!!

You should also look at that boost, stock cars hit that boost at stock tunning.

11psi falling down to 8? lol thats not "boost" Thats a fart more over stock

Everyone should notice how nice and smooth that timing curve looks due to the low boost that the stock ecu can handle. The car still knocked to achieve this lower timing curve at one point of another. This a good example the ecu adapting to lower octane by knocking and keeping it there. Up the boost to something other than a jb+ at 25 percent and you will see your timing resemble the newest rollercoaster at six flags.

[Jeff@TopGearSolutions]

Direct injection is a simple concept and there is plenty of info on the internet how it works.

The injectors are in the combustion chamber as opposed to the intake manifold.

Since the injectors are directly in the combustion, it allows the combustion process to be cooler, allowing for a more efficient burn (atomization of fuel), and able to run leaner Air fuel ratios.

All in all supposed to make more more, better for gas ,etc etc

However, DI does cause carbon, which I guess is a byproduct of this efficient burn? That I'm not sure of. I do know that because there isnt fuel in the intake manifold, that the valves dont see as much fuel to clean them?

I run meth so everything should be fairly clean in comparison to a Grandma driving around a 335i.

[Clap135]

Originally Posted by M335i Oreo Package

Also isn't one of the main purposes of di to keep the combustion chamber cooler???
If we had a BMW tech on here who was willing to explain we would have a better explanation of how the n54 does whT it does...

A bmw tech knows nothing about tunning. He "sometimes knows" how to replace defect parts though.

[STONEY_M5]

Originally Posted by JPSlick

Direct injection is a simple concept and there is plenty of info on the internet how it works.

The injectors are in the combustion chamber as opposed to the intake manifold.

Since the injectors are directly in the combustion, it allows the combustion process to be cooler, allowing for a more efficient burn (atomization of fuel), and able to run leaner Air fuel ratios.

All in all supposed to make more more, better for gas ,etc etc

However, DI does cause carbon, which I guess is a byproduct of this efficient burn? That I'm not sure of. I do know that because there isnt fuel in the intake manifold, that the valves dont see as much fuel to clean them?

I run meth so everything should be fairly clean in comparison to a Grandma driving around a 335i.

or me... Lol

Thanks

[Clap135]

Originally Posted by JPSlick

Direct injection is a simple concept and there is plenty of info on the internet how it works.

The injectors are in the combustion chamber as opposed to the intake manifold.

Since the injectors are directly in the combustion, it allows the combustion process to be cooler, allowing for a more efficient burn (atomization of fuel), and able to run leaner Air fuel ratios.

All in all supposed to make more more, better for gas ,etc etc

However, DI does cause carbon, which I guess is a byproduct of this efficient burn? That I'm not sure of. I do know that because there isnt fuel in the intake manifold, that the valves dont see as much fuel to clean them?

I run meth so everything should be fairly clean in comparison to a Grandma driving around a 335i.

Keep in mind the advantage of DI are only at low to mid rpms, UP high as rpms climb the advatages of DI go to shit and they need to run the same a/f ratios as PI cars.

[STONEY_M5]

Clap I meant dme programmer directly from BMW, Hans to be exact. Lol

[Jeff@TopGearSolutions]

Originally Posted by JB4135

Here's a JB4 Map 5 Autotune log I did yesterday.
3rd gear WOT.
Only other mod is DCI and ambient was mid 70's.

LOOK AT THAT CURVE.

THANK YOU VERY MUCH!!

I hope this is a joke?

12PSI at best falling to 8. I think you beat Dinan by a couple PSI at best.

Try some real boost and see how it responds.

Autotune is in its infacny for JB4, it needs some work. Think about it this way, its trying to run a stock timing map, and limit knock with more boost.

In theory, the only way to reduce the knock, would be to lower boost, by no accident it lowered your boost to a pathetic amount.

I rest my case. This just proves more and more how much stock timing curves need to be reduced for increased boost.

[Clap135]

Originally Posted by M335i Oreo Package

Clap I meant dme programmer directly from BMW, Hans to be exact. Lol

this will all be revealed to the community once ATR comes out. Then this thread will blow up and I will simply say "i told you so"

[Clap135]

Originally Posted by JPSlick

I hope this is a joke?

12PSI at best falling to 8. I think you beet Dinan by a couple PSI at best.

Actually Dinan runs more....

[shifterboy45]

Originally Posted by Morpheus

great post and I think you are on to something. I've often suspected this. I haven't been involved in tuning anything since my 94 RX7 which relied on maps (not the ECU) when WOT and yes, all those tuning tenets that these guys are preaching now and more (split, etc.) were followed and yes, there was zero knock in those cells, BUT, this ECU seems to be a whole nother animal. I confess to knowing nothing about it, but I do know that there is a world of difference between the two.

i think once everybody says their piece, this like all other issue which are cornerstones of tuning will be bypassed.

everybody has there own take on timing controls -- but fact is no matter your opinion it is what it is --

key:

AIR -
FUEL -
SPARK -

high speed digital controls are commonplace as is apple pie -- but not everyone understands who they work. in my youth i worked for GM and in the early days we didnt have knock sensors, just a control module, cts, 02, map and baro sensor. trying to get someone (back then) to understand HOW closed loop works, is close to what is going on here in this thread. i have a lot of patience after teaching the fundumental and advance applications of the CCC and C3 systems to guys that were totally clueless. so ill keep trying.

cheers

[Sniz]

Originally Posted by Clap135

fuck this spell check bullshit, most of my posts are from my phone, half of them dont make sense me after i post, and editing them with the phone is too much of a pita.

the spell check on these phones is a huge PITA, maybe one day I will have inputted all of my common words and it won't suck.....for now. Sucks.

Originally Posted by M335i Oreo Package

Also isn't one of the main purposes of di to keep the combustion chamber cooler???
If we had a BMW tech on here who was willing to explain we would have a better explanation of how the n54 does whT it does...

BMW tech's in general know less than a lot of the users here when it comes to what makes a n54 tick.

Hell a BMW tech that I asked for help installing the head/vanos/cam assembly on the s52 is the one who bent 4 valves in the process

I should have just taken the time to learn it on my own, would have been better off as thats what I had to do anyway.

[Mike@N54Tuning.com]

Originally Posted by Clap135

Great post. Being that neither piggy back cannot tell the ecu loads over stock, all one has to do is map out the loadvstiming table and the answer will be very clear.

Huh? The piggyback can tell the DME load is lower, at, or higher, relative to stock.

Mike

[Jeff@TopGearSolutions]

Originally Posted by Clap135

Actually Dinan runs more....

I thought dinan ran like 5-8 at redline LOL? IDK eitherway it was funny.

[shifterboy45]

Originally Posted by Clap135

A bmw tech knows nothing about tunning. He "sometimes knows" how to replace defect parts though.

gosh dude you make blanket statements that are so biased

what world do you live in? wanna do a reality check? tell me when youre in the Los Angeles area of SoCal. and lets see if your statement rings true .

the ball is in your court!!

[Jeff@TopGearSolutions]

Originally Posted by shifterboy45

gosh dude you make blanket statements that are so biased

what world do you live in? wanna do a reality check? tell me when youre in the Los Angeles area of SoCal. and lets see if you statement rings true .

the ball is in your court!!

IVe worked at dealers for 4 years in the past. The MAJORITY dont know squat except oil changes, brake changes, fluid changes, and misc warranty work.

Show them a Cold air intake and they are like "OMG this car is heavily modded I'm not working on it".