How accurate is the hp/tq histogram?
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- Posts: 468
- Joined: 2021 Mar 21, 15:17
- Location: Colorado Springs, CO
- Vehicle Information: 95 Mustang GT, CBAZA Quarterhorse
331, 190 11R heads, Edelbrock Victor 50 manifold, F303, T5, 76mm Turbo, 91 octane, Returnless dual pump 03 cobra tank, Behind bars rails, 80# siemens injectors
wbo2_030MtxL
57 F100, RZASA, 04 Crown Vic ecu and harness, 302, GT40 heads, 4r70w, 80# deka5 shorties, Holley carb style throttle body, Speedmaster high rise intake manifold
How accurate is the hp/tq histogram?
How accurate is the hp/tq histogram?
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- Posts: 5094
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'19 F-150 3.3L
Re: How accurate is the hp/tq histogram?
I only made it to help visualize the torque curve so you know where peak torque is occurring at.
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- Vehicle Information: 1994 Flarside, XLT, 351w E4OD
SD48b, Quarter Horse, Burn2
Re: How accurate is the hp/tq histogram?
I've been graphing TQ_NET(Net engine torque into transmission, ft-lb.) on EEC-IV SD E4OD, and appears to be very accurate.
TORQUE CALCULATION
OVERVIEW
The engine output torque, or net torque, is calculated from a table of
indicated torque versus speed/load, determined at MBT spark timing, 14.6 A/F
ratio and no EGR. This torque value is then adjusted by multiplying by a
factor dependent on the difference between MBT spark (adjusted for actual EGR
flow), actual spark advance, and if in open loop fuel control, by a factor
dependent on the value of lambse. This value is then further reduced by
subtracting friction torque and accessory load torque. Net torque (TQ_NET)
is used in the electronic transmission control strategy in calculating the
EPC required for "static capacity".
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- Posts: 5094
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'19 F-150 3.3L
Re: How accurate is the hp/tq histogram?
thats only going to be as accurate as your torque table is
the tq and hp payloads i made in tunerpro are based on airmass so will show you where your actual peak torque is occurring which is really all you need to know
the tq and hp payloads i made in tunerpro are based on airmass so will show you where your actual peak torque is occurring which is really all you need to know