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Re: wide band tuning.
[Re: mopfried]
#1506645
09/23/13 10:28 PM
09/23/13 10:28 PM
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Joined: Jan 2003
Posts: 5,443 Indiana
YO7_A66
master
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master
Joined: Jan 2003
Posts: 5,443
Indiana
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Tune your idle first (13.8-14.1 should be close), then tune the transition (idle feed restricters or Idle Air Bleeds/ 11 to 12 is rich for most WOT readings), then your main circuit (primary jets/primary High Speed Air Bleeds, pv and pvcr's), then last the WOT (sec jets/hsab's). I would suggest that you write down the iab's and idle fuel restricters and let us know what you have. Either the ifr's need to be reduced or the iab's need to be larger to lean our your low end cruise a/f.
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: wide band tuning.
[Re: mopfried]
#1506646
09/23/13 10:28 PM
09/23/13 10:28 PM
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Joined: Jan 2003
Posts: 12,093 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,093
Benton, IL.
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Disconnect the secondary linkage and just tune the primaries, first. After you get the primaries where you want them, then hook the secondaries back up and tune them. Sounds like the primary mains need to be smaller and then the PVCRs opened up to get that fuel back under load. Just make sure that the power valve is not adding fuel at cruise. I usually tune the cruise mix with the mains (assuming that you cruise on the mains). Then start drilling the PVCRs till I get in the 13 range. I do the final tuning at the track to see what ratio the MPH likes.
Master, again and still
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Re: wide band tuning.
[Re: DaveRS23]
#1506647
09/23/13 10:31 PM
09/23/13 10:31 PM
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Joined: Jan 2003
Posts: 12,093 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,093
Benton, IL.
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I would agree with Dave on adjusting the cruise mix if your car does not cruise on the main circuit.
Master, again and still
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Re: wide band tuning.
[Re: mopfried]
#1506651
09/24/13 08:23 AM
09/24/13 08:23 AM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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I'd get the highest vac you can then drop back 1" in hg then change the total
live every 24 hour block of time like it's your last day on earth
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