I'm pretty sure the difference between "stock" and Alta throttle is stock has different ratio of how much the accelerator is depressed compared to how much the throttle is opened... Alta usually has a linear setting (meaning throttle is more comparable to pedal position...) and a super linear setting where throttle is a 1:1 ratio to pedal... aka 50% throttle to 50% pedal... rather than stock's 50% pedal translates to 67% throttle...

 

The Throttle Position (TP) on certain vehicles can be counter intuitive. Automotive manufactures spend hours modeling flow of the motors to see what is most efficient. On some motors such as the N14 or Mazda Speed 3/6 DI motor, 100% TP will not procure the most power. Sometimes 100% TP can slow response on tip-in or hurt overall power due to the wrong kind of turbulence causing poor air and fuel mixing and/or poor flow all together. To keep the motor running as efficiently as possible the ECU contain tables to help keep the TP at an optimal position per RPM and mass air flow.

That being said I know Jeff is aware of this kind of advance engine dynamics and has optimized the TP for his tunes to make the most power and have the best response. 100% TP was not the optimal setting iirc.

Rob

 

I'm glad you checked this out, cause I haven't had the time to, lol. Thanks for the help. Although, with being used to the stock setting, I was falling flat on my face every time I was trying to get a rapid response. I quickly changed it back to stock settings with the ability to choose between normal and sport modes.


I figured it was something beyond my ability to try, this does make sense though. I'd be interested to see the actual results of this if for nothing else, enthusiast reasons.

 

As Rob pointed out manufactures spend lots of money and time figuring these things out. There is a map in the ECU that is RPM based, that limits the amount the throttle opens (regardless of pedal position) In stock form the throttle is at 60 degrees open at 1500 and then by 4000 its open 80 degrees. From 4000- 6500 it opens to 90 degress (fully open). It sounds like there is tons to be gained by changing this!!

But there isn't. I have tested this on a few cars with stock HP and 250WHP and on the dyno, there is no difference. Bummer! But once we start busting past 250WHP, they may start to make a difference. Should be busting past that barrier later this week!

 

YEAH 250WHP!

 

I've been trying to keep track of this big thread so forgive me if this has been answered.

Is there an option for the "pop and burble"? I know it sounds weird, but this might be the little thing that pushes me over the edge to purchase this.

 

Hey guys,

I can say that fingers are crossed that Jeff can release a ton of info next week on some new dyno results and how we achieved them using the ALTA AccessPORT and other ALTA items. So stay tuned!

On the Pop and Burble, certainly can be done and is on a future list, but not at the top right now in lieu of focusing on upgrading mapping, new HP goals etc. So we will keep everyone posted.

Thanks again!

Adam @ ALTA Performance

 

What would the difference be between a conservative map and a nonconservative map?

 

double post

 

is there any ETA on the euro friendly version of the AccessPORT?

is the only difference in the Airflow meter? or is it a whole different animal?

seeing as how I live in a fairly remote location, there are no local tuners,
on all my previous cars i've always done my own tuning, (haltech, Power FC, AEM etc)

I'd be happy to do before and after dyno runs as well as diff combinations of modifications too...

 

Thanks for asking! A Non-Conservative would push the boost and timing more. Both types of maps are safe if they have been properly tested. Hope that helps!

The current ETA is April 2011. While the MAF is the only mechanical difference we are currently aware of, the map tables are all different.

We appreciate the offer to help and when we get closer we would love to all upon you for some help.

Thanks again!!!

Adam @ ALTA Performance

 

Wow....35 pages about this so forgive me if this has been asked before.

Is there an option to demo this on my car before plopping down my chunk-o-change?

I remember testing an ECU remapping on my old Volkswagen from REVO Technik before I bought it. The trial test lasted for about a day or two then switched back to original ECU mapping automatically.

 

Thanks for asking. Since this is an actual tool shipped to you, (vs a computer to ECU flash like on your VW) a trial is a bit more complicated.

SO.....

And this goes out to everyone. If you purchase your ALTA AccessPORT and find you don't love the improvement in power, features etc. you can return it for a complete refund within 15 days of purchase.

Stipulations:

You pay freight both ways
AccessPORT MUST be unmarried from car. If not NO REFUND!
Must be in "as-new" condition.
You must call us first for an RMA #.

Simple right? Why not order now? EVERYONE LOVES THE ACCESSPORT!!!!


Adam @ ALTA Performance

 

WOW! That's amazing.

 

Good to hear. It is a good chunk of change for lots of folks but they might be more apt to plunk down that hard earned cash for more fun with the knowledge that they can get it back if they don't see it being worth it.

 

I'm also happy to be a test mule. I live in australia, we have the Euro Spec cars as well

 

Happy to trial too... April is just too far away!!!

 

Any word on when the Cooper S manual Stage 2 map will be available?

 

Thanks for asking! That map (along with pretty much everything) is now pre-loaded or available or online download for the ALTA AccessPORT.

Please let me know how ALTA can help further!

Thanks!

Adam @ ALTA Performance

 

Adam,
[SIZE=3][FONT=Calibri]The 2010 MCS Stage II and Stage III release states “pending” on the website.[/FONT][/SIZE]

 

Hey Adam, I believe that I had sent you guys an email about putting an ALTA JCW Downpipe on a Cooper S with the rest of the ALTA exhaust. Would you have to make a special code or tune for that on an Automatic?

 

I'll have that corrected. Thank you for pointing that out!

I don't believe anything special is needed, but to confirm PM ALTA_Chris, or ALTA2 or e-mail Chris.Cone@ALTAPerformance.com

Happy to help!

Adam @ ALTA Performance

 

...

 

I was going to order one yesterday, but I have a 2011 MCS. The phone operator told me that you haven't "cracked" the 2011 ECU yet. Any ETA? I am jonesin' for the accessport and tune bad!

Cheers!

- Ryan

 

I assume there's the cracking... and then the road testing (seeing how the 2011 has a different engine).