The boost level will vary depending on air temp, gear, and RPM. 15 PSI does sound normal at a higher RPM, but it should getting a little higher than that in the midrange.

The BOV stiffy isn't going to raise the boost in your car, and actually won't make too much of a difference if you have an automatic unfortunately. If you're looking for more power, look into getting a FMIC, boost tube, intake, and turbo back exhaust. Glad you're enjoying the AccessPORT!

 

Quick question...
what is the boost on the Stage1 map? 20psi?
And is it same for both the JCW and MCS?

 

I'm seeing 15.8 - 16.4 psi on my ScanGauge II. I modified the ScanGauge to display a calculated boost pressure using the MAP reading it normally provides. I calculated my boost using 14.7 PSI as ambient air pressure. I live in So. Fla. at an elevation above sea level of about 100 ft...

 

Not Alta AP related, but where do you live in So. Fla that is 100' in elevation? It is maybe 23' at our most inland point of the county on the SW coast.

 

I agree. There are very few places in FL that are 100' above sea level, if any, and definitely not in S. FL. You might hit close to those elevations up in the Ocala area but I can't see it anywhere else. I'm in central FL and the average elevation here is 20-30 feet above sea level. I would be interested in the answer to his question though.

 

There has been a lot of talk recently about the tunes and the fragility of Mini's engines and I wanted to help explain how our tunes are made to help put customers at ease. It's true that some engines have broken using custom tunes, but there are also people that have had problems using stock tunes with no aftermarket parts. Our tunes make great power,and do push the car to have more boost. The boost/load levels we put in each map have been extensively ran on the dyno and street to ensure that they have safe AFRs and EGTs and boost. Keep in mind that when we quote that our maps reach a certain boost level, we are quoting the peak boost level. This means the highest you will see it run and in most cases this is just a split second. Please check out the boost curve below. This is a graph of our Billet 56 turbo, and the MCS Stage 3 mapping. You can see that the aggressive Stage 3 mapping only runs 20psi for a split second. On the MCS we are held to a 20-ish psi limit and that is why we don't push it that hard.



All of the ALTA tunes, and dyno graphs we show, are "De-Tuned" from where we pushed them on the road and dyno. We did this to ensure the car will run safe, and to give room for custom tuners if the customer was looking for a more aggressive tune.

If you are a customer that has parts to run a stage 2 or stage 3 map, you can run a stage 1 map if you want to run a less aggressive tune. If you are a Stage 3 customer who has seen 22+psi for a long time call us and we would like to get you a new map to test out.

We are working hard for a revamp of new maps for our auto customers next week. At the same time we have made some changes to help with idling issues on the JCW, which will also be ready end of next week. But if we get enough customers who are really concerned about the boost or HP their car runs, we could make changes to the boost levels we set in the maps. We really feel this is not necessary, but those who have immediate concerns, run the Stage 1 maps. These still make great power over the stock tune.

Like always, feel free to give us a call with your questions or concerns!

 

Chris,
Do MCSs and JCW use the same maps on the AP? If so, does that mean that a JCW would only see 20PSI also, and since its real close to stock boost levels, that the JCW would be a lot more 'safe' than an MCS with the tune?

 

Chris,

Doesn't the factory JCW turbo run ~20 psi at peak?

 

They do not use the same maps. My JCW was hitting 23.5lbs.

 

[quote=ALTA_Chris;3302833]

We are working hard for a revamp of new maps for our auto customers next week. At the same time we have made some changes to help with idling issues on the JCW, which will also be ready end of next week.

Chris:
Thanks for the clarification. What is the best way to keep on top of what is Alta is doing to refine the maps over time?

 

[quote=gkp;3303056]Ditto that and do you have a fix for the hunting idle on the MCS?

 

23? I just installed the AP with Stage 1 92octane linear map, and highest I can see has been mostly 19psi and occassional 20psi using the AP to monitor boost.

Is something not right?

 

I've seen 23.9psi on my MCSa Stage 1 91 octane. Most of the time she runs between 18-21

 

do you have a larger intercooler?

 

duplicate

 

Chris or Jeff:

Is the EGT reading on the AccessPort accurate? If so, where does it read from?

I've heard it is merely a calculated value, not an actual one....

 

I think it is a calculated value, cause there no such sensor attached from the factory.
To read EGTs accurately, just install a quality electronic gauge.
However you will have to drill your exhaust manifold.

 

get a bigger fmic and you can run a map with more boost.

 

But is it normal for a Stage1 on stock JCW to be only 20psi? Cause isn't stock JCW boost already 19psi, which probably overshoots sometimes to peak at 20psi anyway?

 

I'm having a hard time trusting the boost figures I'm seeing here. In my correspondence with Chris, he indicated that 16-18 psi boost was to be expected on a Stage 1 Auto. R56/55 S. 23.9 psi would seem to be awfully optimistic, not to mention potentially dangerous running stock internals.

And I'm seeing mid-16s boost on my 2008 Clubman S Auto., about what I expected. How are you guys measuring your boost? And how long does it hold those figures?

Also, for the guys who jumped all over my guesstimate of my 100 ft. above seal level in So. Fla. - okay, okay, mebbe I was wrong. But not enough to really affect the figures being used to calculate boost. I set my ambient air peressure at 14.7 psi, so I think I'm about right there. And I was seeing approx. 11.8 psi boost before my tune and I'm seeing 15.5 - 16.8 after my tune. I *think* these figures are fairly accurate. Even if they aren't, what I was really after was the *change* in boost pre and post tune. It looks like I've picked up about 5 psi add'l. boost, does that sound about right for a Stage 1 Clubbie S Auto.?

Thanks!

 

Hey guys, I'm going to answer some of your questions now, since I'm online, I'll answer your other questions tomorrow.

Yes, it does, the 20 psi I was talking about earlier was on a MCS, and was an example.

The maps are different for the MCS and the JCW, it's transparent for you guys, sine the AP automatically pics the maps that are applicable for your car when you plug it in.

[quote=gkp;3303056]I will post something in this thread when we're ready. When it's ready, you will have to uninstall the AP in the car, do an update using the AP Manager, then reinstall the map on your car.

 

Looking forward to updated auto maps.

 

Now if only there were a way to get the JCW tuning auto, steering, throttle mapping AND the AP fuel/boost mapping on the same car at the same time. I've driven both on MCSa's and in my opinion each tune trumps the other in the above categories.

 

Spikes at 23.9 only did it once or twice, most of the time it holds 17-18psi. If it was holding 23.9 JCW or MCS, I'd be kissing my engine goodbye, these engines can't handle that kind of boost for too long, least not stock... there is plenty of evidence of this popping up. In fact whats starting to scare me now is how much oil the engine seems to just magically make disappear! Its not leaking, It's not burning blue, I've had it checked out several times, but somehow she eats like 2L all the time.... its really weird.... not to mention the dipstick in these cars is next to impossible to read..... but.... its still fun to drive so I can overlook this stuff.

 

[quote=///Mflossin;3303077]We will have a fix for that built into the update.

You're right, it is a calculated number. The best way to figure out EGTs is to install an aftermarket sensor.