10k mod = slippage?

[00SVTStrike]

So I tried the 10k mod as well as a 4.7k mod, and they both made pronounced performance gains, but my trans was very lazy about shifting.

I dont think its from the extra power because it would do it even at part throttle. Anyone know what would cause this? And will a FTVB etc fix it?

[chappy]

I think it is just because of the power increase and not doing anything about the tranny.Mine did the same thing before I had the edge with the 10k mod.Yes ,a FTVB or JWVB or any of them should fix it.Then when you go with cutom tunes some day,you can just tell them you already have a modded VB

[FORDF35073PSD]

The reason the transmission is experiencing lazy shifting and in some cases will slip is the nature of the PCM operating strategy. The 10K mod is telling the PCM that the injection control pressure (ICP) is low, so in turn the PCM commands a higher duty cycle to the injection pressure regulator (IPR). It will increase the duty cycle until it sees the desired pressure, when in actuality the pressure is much higher than what it sees. ICP is one of the inputs the PCM uses to calculate load, since it thinks the pressure is lower than it is it thinks it is under less of load, therefor decreasing transmission line pressure resulting in sloppy shifting and slippage.

[jblagg]

I felt my tranny acting up and about 500 miles later it goes out $3650 to rebuilt it

[chappy]

Originally Posted by FORDF35073PSD

The reason the transmission is experiencing lazy shifting and in some cases will slip is the nature of the PCM operating strategy. The 10K mod is telling the PCM that the injection control pressure (ICP) is low, so in turn the PCM commands a higher duty cycle to the injection pressure regulator (IPR). It will increase the duty cycle until it sees the desired pressure, when in actuality the pressure is much higher than what it sees. ICP is one of the inputs the PCM uses to calculate load, since it thinks the pressure is lower than it is it thinks it is under less of load, therefor decreasing transmission line pressure resulting in sloppy shifting and slippage.

Did they just teach you that in class last week Tyler? Jk

[blowinsmoke7.3]

I had a 5.6k for a day or two. Tranny shifted horrible. Took it out

[FORDF35073PSD]

yeah the lower the resistor you put in the worse it will be, you can have the injection control pressure around 2000psi at idle when its targeted pressure is around 600psi. Makes for good response and more low end fueling, but at the mid to top end it is doing next to nothing for you. Usually sets code p1211 ICP above/below desired because the pcm never sees full pressure.

[CanadianDiesel]

Hey guys, I have seen "the 10k mod" many times but, can you guys tell me exactly what it is?
Many thanks..

[blowinsmoke7.3]

its just a resistor that you place in your ICP port and it increases pressure to the injectors.. the 10k did nothing for me put the 5.6k in and i could of used the go pedal with my finger...yah that snappy.
Also gives you a little black smoke.

[FORDF35073PSD]

Originally Posted by chappy

Did they just teach you that in class last week Tyler? Jk

no i was actually just making all of that stuff up no not really it was some of what i learned at school and some of what i figured out with my laptop hooked up to the truck.