S2000 Engine Management Engine management topics, map and advice.

Questions regarding elevation and Kpro

Thread Tools
 
Old Dec 14, 2009 | 11:05 PM
  #1  
brax_1's Avatar
Thread Starter
Registered User
 
Joined: Oct 2008
Posts: 180
Likes: 0
Default Questions regarding elevation and Kpro

I'm planning on being supercharged with Kpro in the coming months and I have a few questions about elevation problems when going to a stand alone.

I live in Utah and travel to Seattle at least once a year. Elevation difference is close to 4,000 ft. One of the ski resorts I frequent is at 9,800 ft. Will I be able to travel to these elevations once I go Kpro? Or, am I stuck to the elevation that the tuner tunes at on the dyno?

Obviously I am new to the engine managment side of tuning so any help would be nice. I just don't want to spend close to $10,000.00 and then find out that I can't drive out of the city. For instance, if I go to Park City which is 20 minutes away, is a 3,000 ft. increase in elevation. If I went to Brian Head, UT it would be a 5,500 ft. increase in elevation. I go to both of these places quite a bit through out the year. The stock ecu can do it so I'm just making sure there's a way to do it with Kpro. Please correct me if this way of thinking is wrong.

Thanks.
Reply
Old Dec 15, 2009 | 03:47 AM
  #2  
Elroy's Avatar
Registered User
 
Joined: Dec 2006
Posts: 3,286
Likes: 0
From: Tampa, Fl
Default

THAT is a good question! The AEM guys in our crew (Florida) that frequent the Dragon have minor issues when they are in the mountains. Now the KPro being in essence a Honda ecu with a different memory type I would think it could handle the altitude change if setup correctly (I THINK – A lower map reading) but I will defer to someone more knowledgeable… Now your performance WILL decrease since your sc psi will decrease due to thinner air.

J
Reply
Old Dec 15, 2009 | 07:42 AM
  #3  
Gernby's Avatar
Former Sponsor
 
Joined: Mar 2002
Posts: 15,526
Likes: 19
Default

It would only be a problem if the tuner didn't tune for the upper and lower load levels that the engine will see at the various altitudes.
Reply
Old Dec 15, 2009 | 10:54 AM
  #4  
Hondata's Avatar
Former Sponsor
 
Joined: Jul 2001
Posts: 164
Likes: 0
From: Torrance
Default

No problem. The nature of a speed-density system that Honda uses means that air pressure changes are automatically compensated for. In addition the ECU contains an internal barometric air pressure sensor which tweaks some of the minor tables for altitude. Boost will drop a little, but any competent tuner will have no problem mapping for this.
Reply
Old Dec 15, 2009 | 01:48 PM
  #5  
brax_1's Avatar
Thread Starter
Registered User
 
Joined: Oct 2008
Posts: 180
Likes: 0
Default

Thanks guys that put my mind at ease. Supercharger here I come!
Reply
Old Dec 16, 2009 | 06:18 PM
  #6  
EVAN&MONICA's Avatar
Registered User
 
Joined: Dec 2007
Posts: 22,535
Likes: 0
From: Portlandia
Default

This is good news for me too since I plan on going Kpro when I get ITBs. I live around 3000ft and work at almost 0. I know I have a cabable tuner with experience on S2000's with kpro
Reply
Old Dec 17, 2009 | 12:24 AM
  #7  
EliteTuning's Avatar
Registered User
 
Joined: Aug 2009
Posts: 370
Likes: 0
From: Los Angeles, CA
Default

its definitely not a hard thing to tune at all. It comes easy to those who are good at what they do
Reply
Old Dec 22, 2009 | 06:08 AM
  #8  
camuman's Avatar
20 Year Member
 
Joined: Oct 2002
Posts: 8,044
Likes: 6
From: South Florida
Default

Originally Posted by EVAN&MONICA,Dec 16 2009, 11:18 PM
This is good news for me too since I plan on going Kpro when I get ITBs. I live around 3000ft and work at almost 0. I know I have a cabable tuner with experience on S2000's with kpro
ITB's are very different. u dont use a map sensor, only tps tuning, so yeah, your kinda screwed when you go ITB. hell, even pressure changes at the same elevation will cause you problems.
Reply
Old Dec 22, 2009 | 06:47 AM
  #9  
crispeed's Avatar
Registered User
 
Joined: Dec 2009
Posts: 69
Likes: 0
Default

[QUOTE=Elroy]THAT is a good question!
Reply
Old Dec 22, 2009 | 08:08 AM
  #10  
camuman's Avatar
20 Year Member
 
Joined: Oct 2002
Posts: 8,044
Likes: 6
From: South Florida
Default

Originally Posted by crispeed,Dec 22 2009, 11:47 AM

The proper way to set up ITB's is to use TPS with Map/Speed Density compensation. You get the best of both worlds.
Most modern stand alone ecu's are capable of handling that but in the end it does not matter if you got a $300 or $5000 system because it's up to the person behind the keyboard to get 100% out of it.
well i'll be damned, cuase your the first person to ever say that it can be done. granted, i dont ask many people, just what i read on here and in convos here and there.

where does teh map sensor read from? where does it go? dont u need map sensor + air temp to calc density of air?

soooo, color me surpised.
Reply



All times are GMT -8. The time now is 05:28 AM.