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I have a question about the GT tune?

ZXMustang

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^^^^ This is why stock to stock, the DH is faster.

But when I do this to the GT, then its magic. MOMMY I MADE A DARK HORSE!@@

S650 Mustang I have a question about the GT tune? 1767015007021-m7
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Junkyard Dog

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Could you explain post # 31 for those of us who have no idea what we are staring at, without all the snarky sarcasm? What is the chart? What does your highlighted 496 at 5th and 9,000 represent? What do all of the green, yellow, orange, and pink colors mean?
 

Zig

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robvas

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ZXMustang

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Could you explain post # 31 for those of us who have no idea what we are staring at, without all the snarky sarcasm? What is the chart? What does your highlighted 496 at 5th and 9,000 represent? What do all of the green, yellow, orange, and pink colors mean?
Sure. What you are seeing is desired engine tq by the PCM at the given engine speed v gear. And the lower numbers mean the PCM wants less tq (aka tq management) in the GT at similar engine speeds v gear than the DH. And by raising those values, Im allow the engine to make more indicated (calculated) tq than what the OEM has allowed. This is a big part of both the PCM and TCM, both side of which have tq management in place for various reasons. Be it emissions, driveline protection or in this case to create a delta between the GT and the DH. With all other factors equal, on paper the DH's straight line performance at least, looks to be a placebo. And in practice, it has proven to be as well.

If I take the values in the GT tq management tables, and match or increase them beyond what the DH has, then the PCM will allow the GT to make more power at higher RPM.

The scale of these tables is also in place to cap or as we say "clamp" the GT to hold its current tq management values well beyond its hard limiters. All of which can be changed. When we uncork the GT, it has proven to be an absolute beast.

Now dont get this twisted thinking that if we do the same to the DH, that it will be some level above the GT. Thats what Im telling you isnt happening. Once we work our tuning magic on either car allowing them to push to their absolute limit of what a stock NA gen 4 coyote can make for power, you are 1:1 GT to DH. There isnt some 20hp buffer that the DH has over the GT. That was artificially put in place by Ford by using tq management to hold the GT down a bit.
 


ZXMustang

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Although motortrend (yeah i know i know mag rag numbers) found the mn6 gt to be slightly quicker than the mn6 dh

https://www.motortrend.com/reviews/...boost-s650-0-60-mph-quarter-mile-acceleration
Thats "margin of error" stuff. With the stock tune, these cars are very effected by Engine coolant temp, trans temps, octane and a laundry list of other things. Many of which most tuners eliminate to create a much more consistent power delivery structure.

Remember these cars are built and tuned to be able to run down to 85 or worse octane all the way up to 93 octane and do it in any elevation and climate for at least 100k miles or more. So they are very watered down to account for every idiot bouncing off the limiter with 87 octane at a take over in downtown denver in the middle of summer... Or the guy at sea level in 70* temps running the cleanest 93 you've ever sipped.
 

Zig

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You know they quote flywheel hp.

Here is the differences between a 2025 Auto DH and a 2025 GT PP.

Maximum Torque Lower Hysteresis
Maximum Torque 1 vs. Gear. vs. Engine Speed
Maximum Torque OP 1 vs. Gear. vs. Engine Speed
Maximum Torque 2 vs. Gear. vs. Engine Speed
Maximum Torque OP 2 vs. Gear. vs. Engine Speed
Maximum Torque 3 vs. Gear. vs. Engine Speed
Maximum Torque OP 3 vs. Gear. vs. Engine Speed
Maximum Torque 4 vs. Gear. vs. Engine Speed
Maximum Torque OP 4 vs. Gear. vs. Engine Speed
Master DTC List
4x4 Upshift Map OSS vs. Shift vs. TPS
ABS Upshift Map OSS vs. Shift vs. TPS
Base Upshift Map OSS vs. Shift vs. TPS
Cold Upshift Map OSS vs. Shift vs. TPS
Cooling Reduction 2 Upshift Map OSS vs. Shift vs. TPS
Cooling Reduction 3 Upshift Map OSS vs. Shift vs. TPS
DSC Upshift Map OSS vs. Shift vs. TPS
Inferred Grade Upshift Map OSS vs. Shift vs. TPS
Inferred Grade Level 2 Upshift Map OSS vs. Shift vs. TPS
Snow Mode Upshift Map OSS vs. Shift vs. TPS
Traction Control Upshift Map OSS vs. Torque vs. RPM
ABS Downshift Map OSS vs. Shift vs. TPS
Base Downshift Map OSS vs. Shift vs. TPS
Cold Downshift Map OSS vs. Shift vs. TPS
Cooling Reduction 2 Downshift Map OSS vs. Shift vs. TPS
Cooling Reduction 3 Downshift Map OSS vs. Shift vs. TPS
DSC Downshift Map OSS vs. Shift vs. TPS
Inferred Grade Downshift Map OSS vs. Shift vs. TPS
Inferred Grade Level 2 Downshift Map OSS vs. Shift vs. TPS
Snow Mode Downshift Map OSS vs. Shift vs. TPS
Trans Downshift Map OSS In Select Shift
4x4 Coastdown Map OSS vs. Shift vs. TPS
ABS Coastdown Map OSS vs. Shift vs. TPS
Base Coastdown Map OSS vs. Shift vs. TPS
Cold Coastdown Map OSS vs. Shift vs. TPS
Cooling Reduction 2 Coastdown Map OSS vs. Shift vs. TPS
Cooling Reduction 3 Coastdown Map OSS vs. Shift vs. TPS
DSC Coastdown Map OSS vs. Shift vs. TPS
Inferred Grade Coastdown Map OSS vs. Shift vs. TPS
Inferred Grade Level 2 Coastdown Map OSS vs. Shift vs. TPS
Mud Mode Coastdown Map OSS vs. Shift vs. TPS
Sand Mode Coastdown Map OSS vs. Shift vs. TPS
Snow Mode Coastdown Map OSS vs. Shift vs. TPS
Sport Coastdown Map OSS vs. Shift vs. TPS
TCC Lock 4x4 OSS vs. Gear vs. Pedal Position
TCC Slip 4x4 OSS vs. Gear vs. Pedal Position
Transmission Axle Torque Limit
Active Exhaust Position Table 2
Active Exhaust Position Table 3
Active Exhaust Position Table 5
Active Exhaust Position Table 6
Active Exhaust Position Table 7
Is 418 at 4,900 rpm in fourth/fifth the stock value?
 

ZXMustang

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Is 418 at 4,900 rpm in fourth the stock value?
Those two screen shots minus the one with the pink numbers that I changed are all stock values for the GT and the DH. They are calculated tq values by the PCM and TCM. Not arbitrary but not what you are thinking with what Ford advertises or what a dyno would measure. These cars are all controlled by their calculated tq values. Which are the same GT and DH, just managed heavier on the GT as shown.
 

robvas

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Try again homes, i guess cams and rods don’t make any difference in your electronic book? Didn’t i say it seems we’re saying the gt is the better buy since the difference is driver dependent? You seem to be saying the only difference is at the top end (cough cough cam) where 90% of boy racers will never be able to spend much time at, unless on the closed roadcourse using a fuel specific tune?
Forged parts alone don't make any more power than cast
 

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Forged parts alone don't make any more power than cast
Trueish 😁. But isn’t that the difference once the tune is equalized.
 

ZXMustang

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Depending if the compression is lowered, they could make less which is usually the cast with the LS/LT crowd. Now when you add boost, then all bets are off. But in the coyote game, the 10R80 becomes the weak point before the short block does.
 

Mustangman2016

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So far there is no FP tune for the GT... and word is there won't be?
Idk ford performance had a tent at Carlisle ford nationals this year and they told me to expect a tune by the end of the year, but that was also before it was unlocked by Hp tuners so not sure if that plan has changed for them. Especially since today is the end of the year and there’s still no FP tune lol
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