 tuning issues with 5sfte, having trouble keeping a stead a/f |
 Nov 14, 2009 - 10:08 PM
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 Enthusiast  Joined Jul 22, '06 From San Antonio / georgetown, Texas Currently Offline Reputation: 9 (100%)  |
So i have a 5sfte and im using a NEO to tune with 460cc injectors. My problem is that sometimes the car runs fine and the wideband reads in the 11's. but randomly the car with run way too high of an a/f ratio. even at idle sometimes i need to take fuel out to get an 11 and sometimes i have to dump fuel in. what could be causing this random a/f issue. my IAT sensor hasnt yet been put into the piping but i doubt it can make that huge a difference, other than that i dont know.
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Replies
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Nov 14, 2009 - 10:33 PM
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 Enthusiast Joined Aug 31, '02 From Philadelphia, PA Currently Offline Reputation: 8 (100%) |
That IAT sensor does play a role in fueling, so I would hook that up before you start any diagnosis.
You also have to keep in mind that the safc is just trying to fool the stock ecu, but the ecu can still adjust the fuel map based on changes in ambient temp, coolant temp, etc.. -------------------- 15PSI - 30MPG - Megasquirt Tuned
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Posts in this topic
D_Dawg tuning issues with 5sfte Nov 14, 2009 - 10:08 PM
presure2 at idle and low throttle, low load situations, you... Nov 15, 2009 - 8:51 AM
D_Dawg ok i put the IAT sensor in, and im still having is... Nov 25, 2009 - 9:28 PM D_Dawg could my issue be related to a bad egr valve? my r... Nov 26, 2009 - 4:36 PM presure2 QUOTE (D_Dawg @ Nov 26, 2009 - 4:36 ... Nov 26, 2009 - 7:03 PM D_Dawg So, say it’s the fuel pump. How would one go about... Nov 26, 2009 - 9:18 PM lagos QUOTE By under load do you mean wide open throttle... Nov 26, 2009 - 9:35 PM D_Dawg QUOTE (lagos @ Nov 26, 2009 - 9:35 P... Nov 26, 2009 - 9:49 PM lagos QUOTE (D_Dawg @ Nov 26, 2009 - 9:49 ... Nov 27, 2009 - 12:50 AM |
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