tuning problem.

[sleepyalero]

Originally Posted by O1GAGT

I would be interested in seeing a copy of the .hpt file as I have both DHP and HPT programs. I am curious to see what happens if we were to change the transmission type to manual via tiny tuner.


If you want to give it a try, I can change it and send you back the file.

hmmmm.... could quite possibly help out... PM me your email, and ill shoot it over to ya.

thanks man.


i just noticed, you live in indy. as do i.

[sleepyalero]

Originally Posted by PhantomLover007

I had a lot of KR when Aaron scanned mine before he moved to lower Canada..

thanks matt.

phantom, did you ever get that KR sorted out?

[HOYS]

Originally Posted by O1GAGT

I would be interested in seeing a copy of the .hpt file as I have both DHP and HPT programs. I am curious to see what happens if we were to change the transmission type to manual via tiny tuner. http://www.hptuners.com/forum/showth...-type-variable




If you want to give it a try, I can change it and send you back the file.

I don't know if that would do much. From what I've gathered through research the trans type is just a number that switches the solenoid logic between the 45 and 65.

[sleepyalero]

Well something i did the other day that was interesting. With the hpt hooked up before i did this the trans V read 0 and the temp read -37. I stuck a resistor in the stock 4t45 plug thats not being used in the temp sensor pin "L" and pin "M" and the tuner then gave me a trans reading. 118* constant with a 3.59 V. Rpms seem to be doing better with that.

[mfuller]

Originally Posted by sleepyalero

Well something i did the other day that was interesting. With the hpt hooked up before i did this the trans V read 0 and the temp read -37. I stuck a resistor in the stock 4t45 plug thats not being used in the temp sensor pin "L" and pin "M" and the tuner then gave me a trans reading. 118* constant with a 3.59 V. Rpms seem to be doing better with that.

I'm going to try the resistor trick on mine when I get a chance, as mine reads -37 degrees also. It'd be nice to know if the F40 had provisions for a fluid temperature sender. Although it might not - that's one thing I was disappointed to lose when I swapped out the slushbox - the F40 has no provisions to use an external oil cooler, so I lost my 28,000GVWR B&M Racing trans cooler.

[sleepyalero]

Let me know if you notice a difference matt. I did .

Im sure you could tap into wires that are connected to the f40 to get a real trans temp reading its just a matter of finding what wires are for what.

For now, im happy with the resistor. Telling the pcm the trans is 118* instead of -37 is a good improvement, and the car seems to like it better seeing the trans temp is now "okay" even though its not really the correct temp.

[HOYS]

Originally Posted by sleepyalero

Let me know if you notice a difference matt. I did .

Im sure you could tap into wires that are connected to the f40 to get a real trans temp reading its just a matter of finding what wires are for what.

For now, im happy with the resistor. Telling the pcm the trans is 118* instead of -37 is a good improvement, and the car seems to like it better seeing the trans temp is now "okay" even though its not really the correct temp.

This is somewhat confirming my theories. The car does not like having some wonky values show up and is doing something to protect itself.

You should figure out a way to rig the pressure sensor too

[AaronGTR]

I'm sure there is a way to put a temp sensor in the trans if you wanted to. Even if you had to drill and tap a hole and thread in a coolant temp sensor or something similar. It should be just a simple voltage signal that varies with resistance from temp change. There is lubricating oil in the manual trans, so it will have a temp.

I've heard of race teams and people/companies who plumb in coolers with an electric pump to cool manual tranny's as well. Probably wouldn't need it though unless your car saw regular extended track time.

[sleepyalero]

Originally Posted by HOYS

This is somewhat confirming my theories. The car does not like having some wonky values show up and is doing something to protect itself.

You should figure out a way to rig the pressure sensor too

Good idea. I will look into the harness again and see if i could throw a resistor in for that as well possibly.


Aaron, yeah mine doesnt see much track driving. No need to go that far into it, atleast for now.