4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Running too lean?

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Old 02-20-2006, 07:36 PM
  #1  
aking287
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Default Running too lean?

I think the stang is running too lean. It seems to be really sluggish until higher RPM's but it still doesn't feel quite as powerful as before the tune. Put the Diablo on and leaned it out 1 unit @ WOT. I don't hear any definate pinging. Never heard pinging on a mustang before so I'm guessing I could hear it loud and clear if it was pinging. Anyone got any advice?
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Old 02-20-2006, 07:42 PM
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MTShambles
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Default RE: Running too lean?

Are you throwing a code??

Have you tried datalogging with the diablosport to see if you are in fact running a bit too lean?
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Old 02-20-2006, 07:50 PM
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red2k1gt
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Default RE: Running too lean?

any smoke coming from the tail pipes?
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Old 02-20-2006, 08:42 PM
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aking287
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Default RE: Running too lean?

no. no smoke. Just feels a little sluggish. Haven't run the datalog. I need to go get the AC hook up and the cord for the computer so I can start doing that stuff. I know that you can't "fine tune" like a pro can with the Diablo but I would like to get it as close as I can. I just went outside and put the Fuel Table back to 0, we'll see what that does for it.
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