Does it still drop 4 cylinders when shifting with a chip??
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Member
Joined: Jul 2001
Posts: 99
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From: Lutcher, Louisiana
Does it still drop 4 cylinders when shifting with a chip??
When my truck shifts from 2-3 and sometimes 1-2 it feels like it is shifting twice. It will shift up and then quickly shift again or at least thats what it feels like its doing. I was wondering if it still drops four cylinders when shifting with a chip, if so could this possibly be the other four cylinders kicking in?? Please Help
Thanks
Nick
Thanks
Nick
Senior Member
Joined: Jun 2000
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From: Monrovia, CA
Depends on the chip program. I would say most tuners get rid of this 4 cylinder drop with their programs, but some folks have told their tuners not to remove this 'torque reduction' feature for fear of damaging their transmissions - many have their opinions pro/con about this, might want to try a search for more information.
Rest In Peace
Joined: Feb 2001
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From: Right Flucking Here Ni66a
nikslightning
Right before i got my chip i had my single blade throttle bodie on and from that mod my truck redlined and shifted at 5600-5700 RPMS. With the chip most tuners i think set the truck to shift at those RPMS. But man what a difference with the 8 cyclinder shifts doesnt feel like the truck bogs down at all. Personally i think these rears are pretty much bullet proof and can handle it i even have the PSP Factory_Tech valve body and it chirps the tires and my tranny feels strong as anything. Me and Sal figured out with all my mods i should have about 450 HP at the engine and 390 at the rear and over 500 ft lbs of torque. So with that much torque im sure they can handle it i heard that ford made the trucks cut to 4 cylinders when it shifted to up the life of the trans fluid. Well if you are looking a for a good chip or any other mods try Sal at PSP http://www.powersurgeperformance.net.
Vin
Right before i got my chip i had my single blade throttle bodie on and from that mod my truck redlined and shifted at 5600-5700 RPMS. With the chip most tuners i think set the truck to shift at those RPMS. But man what a difference with the 8 cyclinder shifts doesnt feel like the truck bogs down at all. Personally i think these rears are pretty much bullet proof and can handle it i even have the PSP Factory_Tech valve body and it chirps the tires and my tranny feels strong as anything. Me and Sal figured out with all my mods i should have about 450 HP at the engine and 390 at the rear and over 500 ft lbs of torque. So with that much torque im sure they can handle it i heard that ford made the trucks cut to 4 cylinders when it shifted to up the life of the trans fluid. Well if you are looking a for a good chip or any other mods try Sal at PSP http://www.powersurgeperformance.net.
Vin
Senior Member
Joined: Jun 2001
Posts: 868
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From: Where I am
still don't get it
Is it a 4cyl drop out or is it the trans/t-q lockup?
I hear both. Or is it a combo? It would seem that if it is the trans then ford built in a way to create heat. Not a big deal, just want to know for sure.
I hear both. Or is it a combo? It would seem that if it is the trans then ford built in a way to create heat. Not a big deal, just want to know for sure.
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Joined: Sep 2000
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Hey DR.D,
The "torque reduction" on shifts in the Lightning is accomplished in several ways.
There is a 400 millisecond delay in the shift to allow the transmission to fully engage the next gear.
During the shift the engine power is reduced in several ways. It doesn't do it the same way all the time, I think it depends on the throttle position and the engine load.
1. The timing is retarded
2. fuel is cut off to 4 cylinders
3. fuel is cut off to all 8 cylinders.
4. a combination of the above depending on the circumstances.
Why did they program the L this way? Because they had a test mule Lightning during the 2nd Generation L development program. They drove this L all over the country, drove it hard, towed with it, abused it, etc. During this "testing" they broke the transmission 12 times. The transmission failures almost killed the Lightning program altogether. One bright engineer came up with using the rev limiter function of the L's computer to reduce power during shifts. This is the now famous "torque reduction" and the reason you and I can have a 2nd Gen L.
Remove the "torque reduction" if you wish with a chip, but understand it is there for a good reason.
The "torque reduction" on shifts in the Lightning is accomplished in several ways.
There is a 400 millisecond delay in the shift to allow the transmission to fully engage the next gear.
During the shift the engine power is reduced in several ways. It doesn't do it the same way all the time, I think it depends on the throttle position and the engine load.
1. The timing is retarded
2. fuel is cut off to 4 cylinders
3. fuel is cut off to all 8 cylinders.
4. a combination of the above depending on the circumstances.
Why did they program the L this way? Because they had a test mule Lightning during the 2nd Generation L development program. They drove this L all over the country, drove it hard, towed with it, abused it, etc. During this "testing" they broke the transmission 12 times. The transmission failures almost killed the Lightning program altogether. One bright engineer came up with using the rev limiter function of the L's computer to reduce power during shifts. This is the now famous "torque reduction" and the reason you and I can have a 2nd Gen L.
Remove the "torque reduction" if you wish with a chip, but understand it is there for a good reason.
Last edited by mracer; Sep 6, 2001 at 12:53 PM.