S2000 tune problem
08-24-2009, 11:13 AM
#1
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map sensor problem?
My AEM EMS came back in the mail a week ago from AEM. They told me I had to load then tune back on for the car to work. I had my tuner e mail me the tune. I open the tune and it loads it on the EMS (I hope). I got the car started and it wouldnt stay on unless I gave it a little gas. While plugged in this it what comes up. The only thee things done sense the S2000 was driven last was re hooked up vacuum lines and put the GM 2 bar back. some wires for the map ended up touching before I put electrical tape on them.....
Last edited by HondaKyle; 09-06-2009 at 04:51 AM. Reason: I dont think its the tune any more.
08-24-2009, 01:08 PM
#4
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Re: S2000 tune problem
lmao kyle you know there's a "Print Screen" button right? 
but your way works too.
and for the issue with the tune, if the map isn't the issue its the tune upload. I ran the smurf car with a diff map (i uploaded wrong) and it did the same thing you're describing.
but your way works too.and for the issue with the tune, if the map isn't the issue its the tune upload. I ran the smurf car with a diff map (i uploaded wrong) and it did the same thing you're describing.
08-24-2009, 11:50 PM
#5
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Re: S2000 tune problem
How?
Do you still have the smurf car? Im gonna plug the stock map back in and change it on the EMS that I have the stock one and see if it will read what it should. The stock one works till I have boost...
Do you still have the smurf car? Im gonna plug the stock map back in and change it on the EMS that I have the stock one and see if it will read what it should. The stock one works till I have boost...
08-25-2009, 04:41 AM
#7
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Trending Topics
08-29-2009, 07:49 AM
#8
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Thread Starter
Re: S2000 tune problem
Originally Posted by JDogg
I saw you post that your s2000 w/the aem was really hard to start if it stalled out..
mine was doing the same thing and i think i may have figured it out.
My car usually smelled a little like gas when it did that so after some thought i figured it had something to do with the evap system.
Turns out there isnt really much info about how honda acutally uses the evap system, so I oversimplified it.
I only use 2 of the evap controls. LS4 and LS5.
LS5 is the canister vent. that opens the vent from the tank to the canister. I activate this as the car is "dying/being shut off.
under 1% throttle
under 700 rpms
over -14.7 load
under 255 coolant temp
under 255 vss
LS4 is the evap purge soleniod. You cant have this active under normal conditions b/c it makes the car run rich. so i set it to be active when DFCO is active. The stock ecu only activates it when coolant temp is over 150 deg, so i set ls4 to
coolant over 150
load under -11psi
rpm over 1500 rpms
tps less than 1%
road speed under 255.
I tried it a few times this morning and the car started normally every time.
If you get the car running again on the aem and test it please let me know and ill make a post about it b/c im sure other people have the same problem
mine was doing the same thing and i think i may have figured it out.
My car usually smelled a little like gas when it did that so after some thought i figured it had something to do with the evap system.
Turns out there isnt really much info about how honda acutally uses the evap system, so I oversimplified it.
I only use 2 of the evap controls. LS4 and LS5.
LS5 is the canister vent. that opens the vent from the tank to the canister. I activate this as the car is "dying/being shut off.
under 1% throttle
under 700 rpms
over -14.7 load
under 255 coolant temp
under 255 vss
LS4 is the evap purge soleniod. You cant have this active under normal conditions b/c it makes the car run rich. so i set it to be active when DFCO is active. The stock ecu only activates it when coolant temp is over 150 deg, so i set ls4 to
coolant over 150
load under -11psi
rpm over 1500 rpms
tps less than 1%
road speed under 255.
I tried it a few times this morning and the car started normally every time.
If you get the car running again on the aem and test it please let me know and ill make a post about it b/c im sure other people have the same problem
09-06-2009, 05:12 AM
#11
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Thread Starter
Re: S2000 tune problem
Its spliced in and the Stock map sensor isnt plugged in. Ill get pics up latter today.
http://www.hondata.com/tech3barmap.html
here is how its hooked up.
A=ground
B=signal
C= 5v
http://www.hondata.com/tech3barmap.html
here is how its hooked up.
A=ground
B=signal
C= 5v
09-06-2009, 08:17 AM
#14
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Re: S2000 tune problem
They have 2 BAR's. Forgot what model car it comes on stock, but back in the day when I had a Civic before doing a swap, I researched it for a turbo. If memory serves me right, it's off a car that isn't even factory turbo.
09-06-2009, 09:53 AM
#15
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Re: S2000 tune problem
gm map sensors are piles of ****.
they are only linear in the middle of their range, towards the edges they skew very badly.
use the stock sensor, a hondata or aem sensor, those are perfectly linear and all work very well.
they are only linear in the middle of their range, towards the edges they skew very badly.
use the stock sensor, a hondata or aem sensor, those are perfectly linear and all work very well.
09-06-2009, 11:39 AM
#16
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Re: S2000 tune problem
I'm gonna check a junk yard for some and try...
09-06-2009, 01:25 PM
#18
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09-06-2009, 01:34 PM
#19
Honda-Tech Member
Re: S2000 tune problem
keep in mind that if you only change the sensor type in the wizard it will not rescale the maps, the car wont run, but you can use it to see if everything is right.
key on/engine off, engine load should be close to 100kpa/0psi
key on/engine off, engine load should be close to 100kpa/0psi
09-06-2009, 01:40 PM
#20
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Thread Starter
Re: S2000 tune problem
Yeah, I'm gonna mess with it Monday or Tuesday night. I think I change it to the OEM sensor and it was around 100ish and I didnt think that was right so i changed it back to the GM. Thanks for all your help!
09-06-2009, 08:19 PM
#21
Honda-Tech Member
Re: S2000 tune problem
you can use any honda map sensor that plugs up, they are all the same.
email me your cal and ill set it up for whatever sensor you are using so you can at least crank the car up.
email me your cal and ill set it up for whatever sensor you are using so you can at least crank the car up.
09-07-2009, 03:54 AM
#22
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09-08-2009, 04:44 AM
#23
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Re: S2000 tune problem
I changed it back over to the stock map sensor. The car started up just fine but ran like ****! The fuse my wideband was on blew so I gotta hook that back up to check things out...
09-08-2009, 05:07 AM
#24
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Re: S2000 tune problem
If that is what your map sensor is reading when you are trying to start it and idle there is no way it'll run right. It's fueling and has timing like it's under a major load, not idle. Fix the map sensor, and or wiring.
09-08-2009, 06:50 AM
#25
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Re: S2000 tune problem
When I changed it to the Honda map sensor it was at 100 kPa...