08 Mustang GT Running Lean in open loop?

[jsullivan]

Hi,

I have a 08 GT/CS Whipple Supercharger, 80lb Ford Injectors, Drake Fuel Rails, Accel coil overs, Cold 0 degree plugs, Cold air intake, 95mm Mass AF, and stock duel exhaust. Here is the bad news, it is running very lean, very little response to the MAF transfer adjustments I have been making. Obviously I am very new to this and my scans aren't much but I will give what I got and hopefully someone with a bit more experience educate me further.


Thanks and let me know if you require more info??

[jchambers]

What fuel system mods?

[jsullivan]

Stock fuel lines, stock fuel pump.

[Exley]

Stock fuel lines, stock fuel pump.

What pulley on the whipple?

[gmtech16450yz]

Did you try cleaning the MAF? There might be some spectator body parts, flesh or blood stuck in it.







Sorry. Couldn't resist.

[jsullivan]

3.25 Pully

[jsullivan]

That was pretty good, but no.

[jchambers]

Unless I'm seeing something wrong, you've got other issues going on. The MAF voltage is 0.0 at all times so I'd start there. The inferred manifold pressure is low (would expect closer to 20-inHG at idle, and the throttle position looks high at 12%. Take a step back and check things over.

[jsullivan]

Unless I'm seeing something wrong, you've got other issues going on. The MAF voltage is 0.0 at all times so I'd start there. The inferred manifold pressure is low (would expect closer to 20-inHG at idle, and the throttle position looks high at 12%. Take a step back and check things over.

Thanks for input I really appreciate it, and will look at the speed density at idle as I am still trying to wrap my head around those tables. I temp disconnected the MAF for the open loop but connected it since then.

Thanks again,

JS