[Clap135]

Originally Posted by black e

there's many other platforms that can't really hold allot of boost up top with the stock boost control hardware ( solenoid/s, wastegate/s , DV/s ,ect) but that doesn't mean "the end of the road".
I've worked on a bunch of mzd speed 3/6 (also DI engines) and you can't get shit out of the motorcycle sized turbo with the stock hardware...but put a GM boost control solenoid with the correct resistor/s to match the OEM voltage and you can get the tiny turbo to hold 15PSI to redline....or take Evos on stock turbo, same problem , but change the OEM solenoid and/or OEM wastegate and they hold 23PSI to redline.
It might take some work but I'm sure we'll get more juice out of them.

ITs funny you mention that cause to this day I still own the stock turbo dyno record....15psi to redline is also a joke on that car btw. It does not seem you know what you are talking about when it comes to the ms3/6...

I did all that on stock boost control hardware.

[black e]

so i'm assuming that you know why boost "stops" at 22.34....

[Clap135]

And what is that suppose to prove? Like I said show me a stock turbo dyno.
I owned that car for two years. To this day no one has beat my stock trubo trap speed or dyno number.



Yes I do know why boost stops at 22.34, same reason on the n54.

[black e]

congrats on your record.
i'm not trying to prove anything, that is just a log of a MZP 6 with a GM boost controll solenoid tuned trough a accessport with ATR, belive it or not....

[Clap135]

Originally Posted by black e

congrats on your record.
i'm not trying to prove anything, that is just a log of a MZP 6 with a GM boost controll solenoid tuned trough a accessport with ATR, belive it or not....

Stock turbo? What power did it put down?

[black e]

i really don't know. the car never made it to the dyno like that.

[Clap135]

Stock turbo?

[Juiced46]

Who cares about dyno records on Mazdas, lets get back to the real subject.

[Clap135]

This is the real subject. People are claiming the wgdc do not reflect the actual wg position. Some claim by switching boost control hardware, the wg position will be correctly reflected

[black e]

Originally Posted by Clap135

This is the real subject. People are claiming the wgdc do not reflect the actual wg position. Some claim by switching boost control hardware, the wg position will be correctly reflected

the wgdc is not wastegate position. it represents the boost solenoid's duty cycle, whether it's vacuum or boost assisted.
listen, I'm not saying that were going to figure out a way to put a GM BC solenoid and magically the turbo is going to happily hold PSI to 7k RPM, and that the DME is going to be "happy" with this.....
what i am saying is that sometimes there is a hardware limitation, and that sometimes it can be worked around.

[OpenFlash]

Originally Posted by Clap135

This is the real subject. People are claiming the wgdc do not reflect the actual wg position. Some claim by switching boost control hardware, the wg position will be correctly reflected

The effectiveness of a convention wastegate control solenoid depends on how much of a restricted boost pressure signal it can bleed to the atmosphere. Most factory wastegate solenoids are sized so that the bleed orifice can only bleed so much of the signal. Which is why adding additional wastegate signal restrictors and/or a larger orifice solenoid can often result in more turbo performance.

In the case of the n54/n55, which has vacuum actuated wastegates, it works by opposite means. But the idea is the same. It's unlikely we can find replacement flyback solenoids with larger orifices. But we can effectively do the same thing by increasing the mechanical tension of the wastegate actuator. I guess we will see soon enough...

shiv

[shockin330i]

Originally Posted by shiv@vishnu

The effectiveness of a convention wastegate control solenoid depends on how much of a restricted boost pressure signal it can bleed to the atmosphere. Most factory wastegate solenoids are sized so that the bleed orifice can only bleed so much of the signal. Which is why adding additional wastegate signal restrictors and/or a larger orifice solenoid can often result in more turbo performance.

In the case of the n54/n55, which has vacuum actuated wastegates, it works by opposite means. But the idea is the same. It's unlikely we can find replacement flyback solenoids with larger orifices. But we can effectively do the same thing by increasing the mechanical tension of the wastegate actuator. I guess we will see soon enough...

shiv

I volunteer my car for any test

[Clap135]

Originally Posted by black e

the wgdc is not wastegate position. it represents the boost solenoid's duty cycle, whether it's vacuum or boost assisted.
listen, I'm not saying that were going to figure out a way to put a GM BC solenoid and magically the turbo is going to happily hold PSI to 7k RPM, and that the DME is going to be "happy" with this.....
what i am saying is that sometimes there is a hardware limitation, and that sometimes it can be worked around.

So why wont you answer if that car was on the stock turbo, because we both know it wasnt.
Trust me i know how wastegates work

[black e]

^^^it was a stock turbo car....but i realize that this is not going to get anywere with you, your going to belive what you already belive and that's fine.
i tried to use a simple example of a simple concept and you took it personal, aparently because of your "record". so let's just let the thread stay on the original subject and go our marry ways.

[FrankiE90]

damn.

[black e]

LOL!!

[Clap135]

Originally Posted by black e

^^^it was a stock turbo car....but i realize that this is not going to get anywere with you, your going to belive what you already belive and that's fine.
i tried to use a simple example of a simple concept and you took it personal, aparently because of your "record". so let's just let the thread stay on the original subject and go our marry ways.

I call your bluff sir, noway a k04 can hold 23psi at redline. Do some research on the car/turbo. Actually go over to mazdaspeedforums.org and post about this. lol

[Juiced46]

zoom zoom.........

[black e]

Originally Posted by Juiced46

zoom zoom.........

[shockin330i]

lulz,

I wish shiv would give us the update already..

[techlogik]

Looks pretty clear that the boost is overshooting by the graphs, then it is closing the throttle, then it slowly ramps back up from there on out. The HP dips also.

[techlogik]

Originally Posted by Clap135

I call your bluff sir, noway a k04 can hold 23psi at redline. Do some research on the car/turbo. Actually go over to mazdaspeedforums.org and post about this. lol

K04s will definitely hold 21psi, some boost up close to 23psi depening on the tune in the Audi B5 S4 world. I ran that setup on my 2002.5 S4 with K04s. 19psi was more of a daily boost setup on pump. My crappy stock K03s would spike 19.5psi with a GIAC flash before I upgraded to a Stage 3 setup. K04s on race gas could easily do 21psi in the S4 to redline.. But it depended on the tune. But that was like 6 years ago...hard to remember.

23psi...that is probably close to it's peak and sounds about right to me.