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> 5sfte rich at idle, 30% out at 1k rmp to keep 14.7 ish a/f
post May 15, 2006 - 12:14 AM
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urbandork



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my 5sfte is running rich at idle. I have to take out 30% of fuel with my safc in order to get the 13-14.7 ish a/f ratio.

set up:
255 lph pump
440cc injectors
everything else is stock

What could be causing the problem????

could having the engine retared to much at idle be the cause of the ecu not being able to adjust to a rich mixture?????

This post has been edited by urbandork: May 15, 2006 - 12:15 AM
 
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post May 18, 2006 - 11:21 PM
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penguininatux

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but anyways. do u think i should go with the 3sgte map sensor or new injectors. i know for a fact that the new injectors will help me run leaner. My experience with a 2 bar map sensor has given me doubts on it effectiveness of leaning a/f's. u wanna let me borrow yours manny? lol. j/k. but i really wanna see what happens if i put a 3sgte map on before i buy one for a $50-100 because i just bought a brand new msd 2 bar lol and it yeilded no effect. But again i dont even know if its wired in correctly?! kindasad.gif

Anyways.. what do u guys think i should do?

anyone live in washington that has a 3sgte map sensor? biggrin.gif someone that would let me plug their map sensor in for a sec? lol.. but kinda seirously. i'll drive somewhere.

Thanks.

DAn

This post has been edited by penguininatux: May 18, 2006 - 11:21 PM


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post May 19, 2006 - 1:29 AM
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jgreening

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QUOTE(penguininatux @ May 18, 2006 - 11:21 PM) [snapback]435591[/snapback]

but anyways. do u think i should go with the 3sgte map sensor or new injectors. i know for a fact that the new injectors will help me run leaner. My experience with a 2 bar map sensor has given me doubts on it effectiveness of leaning a/f's. u wanna let me borrow yours manny? lol. j/k. but i really wanna see what happens if i put a 3sgte map on before i buy one for a $50-100 because i just bought a brand new msd 2 bar lol and it yeilded no effect. But again i dont even know if its wired in correctly?! kindasad.gif

Anyways.. what do u guys think i should do?

anyone live in washington that has a 3sgte map sensor? biggrin.gif someone that would let me plug their map sensor in for a sec? lol.. but kinda seirously. i'll drive somewhere.

Thanks.

DAn


You should not "tune" by changing injector sizes. If you are running rich, you need to lean out the a/f ratio some other way, i.e. ems or piggy back.


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QUOTE(lagos @ Jul 10, 2006 - 1:55 PM) [snapback]454118[/snapback]

i know your trying to do the right thing for your motor, but this is one of those times where you should just trust the guys who have had their swaps for a while and have done a ton of research into this.

Posts in this topic
- urbandork   5sfte rich at idle   May 15, 2006 - 12:14 AM
- - penguininatux   QUOTE(urbandork @ May 15, 2006 - 12...   May 15, 2006 - 12:18 AM
- - presure2   why are you so worried about being rich at idle?   May 15, 2006 - 5:14 AM
|- - urbandork   QUOTE(presure2 @ May 15, 2006 - 10:1...   May 15, 2006 - 12:59 PM
|- - presure2   QUOTE(urbandork @ May 15, 2006 - 1:5...   May 15, 2006 - 1:23 PM
|- - urbandork   QUOTE(presure2 @ May 15, 2006 - 6:23...   May 15, 2006 - 2:17 PM
|- - presure2   QUOTE(urbandork @ May 15, 2006 - 3:1...   May 15, 2006 - 3:32 PM
- - penguininatux   This is kinda wierd. Urban. You're fuel injec...   May 15, 2006 - 5:16 PM
|- - presure2   QUOTE(penguininatux @ May 15, 2006 - 6...   May 15, 2006 - 5:36 PM
- - shin   my set up's rich too so i have the same proble...   May 16, 2006 - 12:37 AM
|- - urbandork   QUOTE(shin @ May 16, 2006 - 5:37 AM)...   May 16, 2006 - 11:11 AM
- - presure2   yup, pretty much. i must admit, tho, ill take the ...   May 16, 2006 - 11:29 AM
- - penguininatux   ahh.. i still dont understand why u can run the 46...   May 18, 2006 - 9:08 PM
- - lagos   wow, you were "blow up the motor" type o...   May 18, 2006 - 9:15 PM
- - CheesyLobster   all i know is that i have a smaller motor, 550cc i...   May 18, 2006 - 9:43 PM
- - presure2   with the stock map, it basicly wont run yea art, t...   May 18, 2006 - 9:44 PM
|- - jgreening   QUOTE(presure2 @ May 18, 2006 - 9:44...   May 18, 2006 - 9:57 PM
- - penguininatux   but anyways. do u think i should go with the 3sgt...   May 18, 2006 - 11:21 PM
|- - jgreening   QUOTE(penguininatux @ May 18, 2006 - 11...   May 19, 2006 - 1:29 AM
- - presure2   this is the last time i will post this. GET THAT M...   May 19, 2006 - 4:41 AM
- - orvillescelica   penguininatux, i saw that you live here in Seattle...   May 19, 2006 - 9:20 AM
- - WALKER   Sorry for bringing this thread back to life, but I...   May 29, 2006 - 3:46 PM
- - presure2   you wanna be no leaner than 11.5:1 under boost. a...   May 29, 2006 - 3:50 PM
- - Silver94CelicaOwner   I was just thinking today of a possible solution t...   May 31, 2006 - 10:51 PM


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