I used virtual box on my mac as well, took a while to set everything up but it was free

 

Hey all....I have a question? For those who have indulged their MINI with the Stage 2, what is the max boost that you've seen (if you have a method of checking)? The max I saw on my Scangauge II was 17 shortly after I got the tune. UNTIL TODAY While I was out having some fun, I punched it and got 19.1

Just curious to see what others have seen.

Temperature conditions - ~50 degrees...misty rain

 

Nice! I can't really say what I get...still waiting on my AiM gauge -_-

 

I've seen 18.7psi once, normally it reaches 16-17psi.

 

Speaking of boost, how high is the boost with a bone stock MCS N14? Just curious...

 

WOW thats a long time now! Any ETA?

 

Mine was about 11.x psi....don't think I ever saw it reach 12. It may have, but I never noticed.

 

Ok so I guess ~17psi is average. Was definitely liking the increase. I immediately felt the difference which is what made me look. When I thought I was "seeing things", I did it again and sure enough....19.1 again.

 

I hit 13.9 max when i was stock.

2010 MCS.

Sent from my Nexus using NAMotoring

 

My stage 2 only hits a maximum of 15.09 psi @ 50deg F according to ScanXL Pro data logging. Engine temp 221deg F, baro 14.35 psi, MAP @ 29.44 psi. Going to do another run tomorrow, hopefully I can see more, as more is better!

 

Make sure to do the run in 4th or 5th starting at a lower rpm to get more load on the engine so more boost is requested.

 

Probably peaked at 12 psi at most, dealer tech told me 11 psi for a stock N14, looks like he was correct. When you think about it going from 11-18 psi it doesn't seem like a lot for how much more power you're getting in return. Now I wonder what a JCW tune would be psi wise, got to be around 200HP which is pretty close to a BT stage 1 tune.

 

13psi for an S and 19psi for a JCW according to Motortrend.

http://www.motortrend.com/roadtests/...ks_first_look/

 

Yeah....I hate waiting too, normally if it takes this long I would have changed my mind already, and it's getting to that point, but it's really close in being released, just no word on it still though.

AiM MXG supposed to release end of March, but AiM hasn't said a thing on their FB page, so it's kinda killing me now. I want this in already!

 

Why not call them and see if they'll give an update?

 

Because even after I've called its the same thing "First quarter '14, that's all we know."

I've asked continuously and makes no sense to continue to pester them as I've already said "TAKE MY MONEY" and they can't until it's actually in their physical warehouse.

 

The boost isn't set to a constant maximum. The article is incorrect. Maximum boost is set by the ECU to meet a torque target and will vary based on factors like the temp of intake air.

For example, I've gotten 17 psi in the summer (not frequently) on my stock tune and frequently see 15 psi. In the winter boost is lower.

 

The numbers are generalities but as I read the original question is wasn't "what was the maximum boost people have ever seen" but "what boost are people seeing under 'normal' conditions". Then there is the over-boost feature which adds even more boost for quick bursts.

Your right, the way the car works there is no definitive answer.

 

Actually its a little more complicated. The ECU sets a maximum manifold absolute pressure (MAP). MAP is atmospheric pressure + boost.

Atmospheric pressure varies significantly with the weather, eg if you are currently experiencing a high pressure or a low pressure system, and also significantly with altitude. It is easily conceivable to see a 2psi difference in atmospheric pressure, in which case "boost" would vary 2psi to achieve the same ECU targetted MAP.

For this reason, if you are looking to see how consistently you tune is running etc, it is more accurate to look at MAP rather than "boost" which is a derived value.

You are correct that the ecu is setting load based targets. However, it will never set a target above the maximum allowable MAP.

 

Here's my boost curve, 8 sec time frame, 4th gear pulling up hill. Nice flat boost. Notice the throttle action, tapers up, even though she was to the floor. DNA Stg 2 Linear +NLBB. ScanXL Data logging.

 

What kind of frame rates are you get using ScanXL? Your graphs look much smoother than mine.

I am using ScanXL directly with the laptop and I'm averaging only ~2 frames per second. Also, I only have ~15 PIDS active.

 

Has anyone went from a stage 2 battle to a stage 3 battle. If so, how much different was it?

Thanks.

 

I will but I'm waiting for my catless downpipe to arrive this weekend before I switch maps. I'll update on here with my "butt dyno" impression of the difference.

 

cerenkov, scan time is about 3 frames a sec, 15 pids active. I'm using a usb connection, faster than wireless. Wonder if I would see more boost with traction control off? I know without, the tires have a tougher time keeping traction when hitting higher rpms in lower gears.

 

Try it out. I do all my runs with traction control off.