Hex Tune or BM3

[dmk08]

Originally Posted by 1FastS4

The log above clearly shows that it is reading Absolute Manifold Pressure (TMAP) as 36.3psi. Minus the barometric pressure of 14.4psi means that actual boost pressure is 21.9psi.

So Vf said they run 26 but they only run 22? What was the elevation at this event?

[Justin.AutoTalent]

Originally Posted by VF-Engineering

We still have the DynoJet results for your car on Stage TWO as well,
so no sandbagging!

Of course not... We aren't the type to alter numbers or lie

I'll have them posted up tomorrow with the Dyno from Drew's car with Pure Stage 2 and BM3.

I didn't get a chance to pull them off the computer during my short stay at the shop.

[CaryTheLabelGuy]

Originally Posted by 1FastS4

The log above clearly shows that it is reading Absolute Manifold Pressure (TMAP) as 36.3psi. Minus the barometric pressure of 14.4psi means that actual boost pressure is 21.9psi.

Your MAP is pegged at 250kPa, which is exactly 2.5bar, which is the limit on the MAP sensor. Your barometric pressure reading looks to be wrong.

You need to log TMAP to see what's happing above that. With TMAP, because it's pre-throttle plate (in the outlet of the intercooler), your reading will come in a little high, so subtract about 1psi (sometimes less) to get boost in the plenum at WOT with the throttle plate 100% open.

[chewbakam4]

Originally Posted by 1FastS4

The log above clearly shows that it is reading Absolute Manifold Pressure (TMAP) as 36.3psi. Minus the barometric pressure of 14.4psi means that actual boost pressure is 21.9psi.

Dude LMFAO! You copied the BM3 avatar? You hurtin' that bad? Your buddy in here will now call you a drone too!! You do know you have two MAP sensors right? The manifold one you're logging is maxed. Wrong sensor bro!

[G35POPPEDMYCHERRY]

another one of these threads. fuck me bimmerpost

[G35POPPEDMYCHERRY]

[1FastS4]

Originally Posted by CaryTheLabelGuy

Your MAP is pegged at 250kPa, which is exactly 2.5bar, which is the limit on the MAP sensor. Your barometric pressure reading looks to be wrong.

You need to log TMAP to see what's happing above that. With TMAP, because it's pre-throttle plate (in the outlet of the intercooler), your reading will come in a little high, so subtract about 1psi (sometimes less) to get boost in the plenum at WOT with the throttle plate 100% open.

MAP (kPa) only maxes out momentarily from approximately 4,900rpm to 5,750rpm - right where I'm making full boost and full torque.

I also have a mechanical boost gauge that that gives me the same data without relying on MAP or TMAP monitoring.
I've only seen peak boost exceed 22psi maybe twice, and will taper off to right around 19psi at redline.

[chewbakam4]

So you don't think something is wrong with your car as your tuner said their Stage 2 is 26psi?

[DLSJ5]

Originally Posted by 1FastS4

It was probably that pesky head wind we were dealing with all day!

Just kidding. Your car is definitely quick, and you've always been great at putting the power down when it counts.

Even better, with the head wind the 154MPH is very impressive, good work.

Why didn't you shoot any vids of you running other cars!?

[VF-Engineering]

Originally Posted by chewbakam4

So you don't think something is wrong with your car as your tuner said their Stage 2 is 26psi?

I can assure you that nothing is wrong with his car!
It's running as intended and generating boost levels that are in line with our calibrations strategies.


The discussion back in July of last year is a bit misleading, primarily because it was written at a
time when the rumor was that "flash tunes are unable to make more than 22psi". Our goal at that
time was to squash that rumor so we can move on to more important topics.

The dyno and boost log we posted was from our testing data with a Stage TWO+ (100 Octane +
water/meth injection) BMW M3. We wanted to demonstrate that we had the ability to control
requested load and manage boost in a way that most people at the time thought to not be possible.

(We also wanted to prove that it was possible to be well into the "500 Club" with a flash tune!)
This is NOT a production tune, but a demonstration of what we can custom tune for.




Typical boost levels for Stage ONE will max out at 20psi, while Stage TWO is seeing approx. 22psi.

Keep in mind that boost pressures are not a fixed value and are based on "requested load". Additionally
peak power is NEVER our main focus. We calibrate the min/max levels for what we feel to be safe
under the various conditions and fuel qualities.

Our development cars undergo months of testing and validation on our dyno's before any product is
released to the public. We go as far as installing EGT probes into the exhaust manifolds, as well as various
pressure and temperature sensors so we can rely on more than simulated readings from OBDII data.
We also understand the max capabilities of these turbos in terms of optimal rotational speeds and our
boost levels do remain well within those limitations.

[GlazierGlaze]

So for those saying PTF is great customer service, can someone ask them why thy don't respond to my PMs?

[proTUNING Freaks]

Originally Posted by GlazierGlaze

So for those saying PTF is great customer service, can someone ask them why thy don't respond to my PMs?

Hi, sorry, our customer service actually sucks. PM box is full Get back to you momentarily.

[GlazierGlaze]

Originally Posted by proTUNING Freaks

Hi, sorry, our customer service actually sucks. PM box is full Get back to you momentarily.

Lol - No worries, just trying to get some information!

[1FastS4]

Originally Posted by DLSJ5

Even better, with the head wind the 154MPH is very impressive, good work.

Why didn't you shoot any vids of you running other cars!?

Man, I wanted to! I had my front and rear dash cams ready and an extra GoPro, but every time we got to staging no one wanted to line up.

At the end of the day I did get to run against a stage 1 tuned F80 M3.
(owner wouldn't say who's tune it was)

[dmk08]

This thread is comedy gold. VF doesn't know their own boost levels (or they didn't in July) and people bragging about beating stg 1 cars with FBO stg 2 cars running 104 octane.

[proTUNING Freaks]

Originally Posted by GlazierGlaze

Lol - No worries, just trying to get some information!

You got mail!

[GlazierGlaze]

Originally Posted by dmk08

This thread is comedy gold. VF doesn't know their own boost levels (or they didn't in July) and people bragging about beating stg 1 cars with FBO stg 2 cars running 104 octane.

Sorry, but I don't read anything of the sort from VF saying they don't know their own boost levels. They clearly stated that they were trying to run higher boost levels and power levels to show it was possible, over a year ago.


I have neither tune, or any tune for that matter, but the nut hugging is strong on both sides of the fence.

[dmk08]

Originally Posted by GlazierGlaze

Sorry, but I don't read anything of the sort from VF saying they don't know their own boost levels. They clearly stated that they were trying to run higher boost levels and power levels to show it was possible, over a year ago.


I have neither tune, or any tune for that matter, but the nut hugging is strong on both sides of the fence.

Does that look like trying to prove something or a statement about their product?

[GlazierGlaze]

Originally Posted by dmk08

Does that look like trying to prove something or a statement about their product?

I'm talking about their statement above clarifying said comment from over a year ago. Seems like you have an axe to grind with them.

[GlazierGlaze]

Originally Posted by proTUNING Freaks

You got mail!

PM'd you right back!

[dmk08]

Originally Posted by GlazierGlaze

I'm talking about their statement above clarifying said comment from over a year ago. Seems like you have an axe to grind with them.

Not really just with BS in general.

[1FastS4]

Originally Posted by dmk08

This thread is comedy gold. VF doesn't know their own boost levels (or they didn't in July) and people bragging about beating stg 1 cars with FBO stg 2 cars running 104 octane.

Comedy gold is your lack of basic reading comprehension.
Or maybe you're playing dense on purpose since all of your talk about VF/HEX only making more power because of "moar boost" just went out the window.

It'll be obvious to anyone who's not already on team BM3 to see that HEX Tuning is the real deal. BM3 has an intriguing platform and it's cheaper, sure! But the difference between team BM3 and HEX owners is that we're not trying to discredit BM3 to make ourselves feel better.

And if you think my last post with the photos from ShiftS3ctor was bragging, you might want to work on your self esteem. I'm sure there's plenty of people who appreciate seeing the difference between different cars even if it's not a straight apples to apples comparison.