Bolt ons now LTFTs way off

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terminator2
Posts: 2
Joined: Fri Jun 15, 2007 9:43 am

Bolt ons now LTFTs way off

Post by terminator2 »

I have a 2005 gto and a u7191 #15468. Stock with diablo tune LTFTs were -1 or -2, right on the money, but when i installed an aem cone filter my LTFTs were around -7 or so. I also have an X pipe and 40 series flowmasters. That doesn't make sense to me that the ecm is pulling fuel. Although my IATs are 100*+ sometimes 135*. Also, when I monitored my A/F at WOT it Spiked to 19.2 Yikes !!!!!!!!!! All the more confusing if it is rich at normal throttle openings. I was able to get The LTFTs to -1.67 by adding 4 to the injector slope and adding 5 to PE, But it still says it is very lean at WOT, and at idle the LTFTs are + 5-6, lean I think. Please help me.
Live2Ride
Posts: 15
Joined: Sat Feb 17, 2007 8:41 am

Post by Live2Ride »

On mine (7191 06 Imp) viewing the A/F real time at WOT showed really high A?F also, but when the log was download to the PC it showed an A/F at 12.39.
terminator2
Posts: 2
Joined: Fri Jun 15, 2007 9:43 am

Post by terminator2 »

Thanks for the info. BTW what was your car registering live at WOT? My LTFTs do register 0 like they are supposed to at WOT. So. I guess I should be ok. :D
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mikel
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Re: Bolt ons now LTFTs way off

Post by mikel »

terminator2 wrote:I have a 2005 gto and a u7191 #15468. Stock with diablo tune LTFTs were -1 or -2, right on the money, but when i installed an aem cone filter my LTFTs were around -7 or so. I also have an X pipe and 40 series flowmasters. That doesn't make sense to me that the ecm is pulling fuel. Although my IATs are 100*+ sometimes 135*. Also, when I monitored my A/F at WOT it Spiked to 19.2 Yikes !!!!!!!!!! All the more confusing if it is rich at normal throttle openings. I was able to get The LTFTs to -1.67 by adding 4 to the injector slope and adding 5 to PE, But it still says it is very lean at WOT, and at idle the LTFTs are + 5-6, lean I think. Please help me.
As I recall, the inferred A/F in the tools playback is displayed wrong.
To see the proper value, you should play it back on the data viewer.

Thanks
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST

[email protected]
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