Dialing in FN1861
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m-barans
- Posts: 93
- Joined: 2021 Feb 16, 23:09
- Location: Lafayette, Oregon US
- Vehicle Information: 2003 Mercury Marauder 300A with new stock bore IRON 4.6 block, Manley crank, Manley H-tuff h-beam rods, CP pistons with stainless rings, ARP head studs, GT500 lash adjusters and rollers, D series cylinder heads, VMP GEN3R 2.65 L TVS blower, 80 lb/hr FRPP Siemens Deka injectors, HPX slot 100mm MAF, coyote mustang fuel pump with Holley 60 psi filter/regulator return at pump, Stainless works long tube headers and complete exhaust, Moates quarter horse and TunerPro RT with support from Decipha, RZASA strategy.
2001 Ford Lightning SVT F-150 stock engine w/ inlet ported M112, GT500 rollers, ARP head studs, metco quick change upper pulley with stock sized upper, K&N intake system, bassani SS exhaust system from the stock manifold flanges back. 4x4 trans oil pan. SSBC big brakes 14” up front. Work/Street truck. My “next to build” with trick flow heads (before extinction) with h-beams & cobra jet crank (sitting in tool box) and proper pistons. Next up after the marauder is dialed in.
Dialing in FN1861
Am I correct in assuming that the way to dial FN1861 in (after t-body adjustment is corrected which is done) is to log a start-up, view the log while monitoring (ATMR3, DESMAF and ECT), deduce what cell we are in in FN1861 at a time/place in log and add/subtract DESMAF correction value from said cell? I’m just trying to clarify this process for my conceptual understanding so I can quit chasing my tail and make some actual progress. Thanks
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decipha
- Posts: 6471
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'25 F-150 5L
Re: Dialing in FN1861
yep that's it
atmr is at the top right of the dash
simple add or subtract the cell in use to try to get the idle air error to 0
atmr is at the top right of the dash
simple add or subtract the cell in use to try to get the idle air error to 0
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m-barans
- Posts: 93
- Joined: 2021 Feb 16, 23:09
- Location: Lafayette, Oregon US
- Vehicle Information: 2003 Mercury Marauder 300A with new stock bore IRON 4.6 block, Manley crank, Manley H-tuff h-beam rods, CP pistons with stainless rings, ARP head studs, GT500 lash adjusters and rollers, D series cylinder heads, VMP GEN3R 2.65 L TVS blower, 80 lb/hr FRPP Siemens Deka injectors, HPX slot 100mm MAF, coyote mustang fuel pump with Holley 60 psi filter/regulator return at pump, Stainless works long tube headers and complete exhaust, Moates quarter horse and TunerPro RT with support from Decipha, RZASA strategy.
2001 Ford Lightning SVT F-150 stock engine w/ inlet ported M112, GT500 rollers, ARP head studs, metco quick change upper pulley with stock sized upper, K&N intake system, bassani SS exhaust system from the stock manifold flanges back. 4x4 trans oil pan. SSBC big brakes 14” up front. Work/Street truck. My “next to build” with trick flow heads (before extinction) with h-beams & cobra jet crank (sitting in tool box) and proper pistons. Next up after the marauder is dialed in.
Re: Dialing in FN1861
Neat! So, I need to repeat this in Drive, correct? Also, it seems implied that the start up IAC duty cycle would likely need to be dialed back since our t-body has been adjusted to be open more at all times. I lowered start up crank duty cycle a bit and crank pw similarly and start ups tend to be less dramatic now too. Should I move on to dash pot and the A/C adder after finishing up with the ISC D and N multipliers?
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decipha
- Posts: 6471
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'25 F-150 5L
Re: Dialing in FN1861
yep
btw I posted my tune from my marauder along with updated adx and xdf files
btw I posted my tune from my marauder along with updated adx and xdf files
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m-barans
- Posts: 93
- Joined: 2021 Feb 16, 23:09
- Location: Lafayette, Oregon US
- Vehicle Information: 2003 Mercury Marauder 300A with new stock bore IRON 4.6 block, Manley crank, Manley H-tuff h-beam rods, CP pistons with stainless rings, ARP head studs, GT500 lash adjusters and rollers, D series cylinder heads, VMP GEN3R 2.65 L TVS blower, 80 lb/hr FRPP Siemens Deka injectors, HPX slot 100mm MAF, coyote mustang fuel pump with Holley 60 psi filter/regulator return at pump, Stainless works long tube headers and complete exhaust, Moates quarter horse and TunerPro RT with support from Decipha, RZASA strategy.
2001 Ford Lightning SVT F-150 stock engine w/ inlet ported M112, GT500 rollers, ARP head studs, metco quick change upper pulley with stock sized upper, K&N intake system, bassani SS exhaust system from the stock manifold flanges back. 4x4 trans oil pan. SSBC big brakes 14” up front. Work/Street truck. My “next to build” with trick flow heads (before extinction) with h-beams & cobra jet crank (sitting in tool box) and proper pistons. Next up after the marauder is dialed in.
Re: Dialing in FN1861
Thanks for sharing that and those updates. I really feel like I'm raping the ISC multipliers because the tables are beginning to look a little ugly lol. Is that ok as long as the DESMAF gets close to 0?
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decipha
- Posts: 6471
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'25 F-150 5L