ECU tune Transmission control unit? - Page 8

Freeman · #**106** 05-18-2009, 11:27 AM

Freeman is broke but wants take out loan to put into car when does not need it....

Would this unit be good for me after I have my 4.44 transmission installed? Or should I be looking at some other TCU? Like I stated earlier, I really liked the way it felt in one of OT's cars and I'd love to have that feel to my car but I'm concerned it'd be pointless in a 4.44 or am I just thinking too much? If you have any other products that would be better for it, please share your thoughts longassname..

longassname · #**107** 05-18-2009, 11:44 AM

It would definitely be an improvement. I might be able to do better though. How about you drum up a few more sales to people with 4.44's and I'll make shift maps especially for them?

Quote:

Originally Posted by Freeman

Freeman is broke but wants take out loan to put into car when does not need it....

Would this unit be good for me after I have my 4.44 transmission installed? Or should I be looking at some other TCU? Like I stated earlier, I really liked the way it felt in one of OT's cars and I'd love to have that feel to my car but I'm concerned it'd be pointless in a 4.44 or am I just thinking too much? If you have any other products that would be better for it, please share your thoughts longassname..

Freeman · #**108** 05-18-2009, 11:49 AM

Hm.. If you can do better for a 4.44, I'll definitely try to get you more people to try it.. Time to make some phone calls and bug some people.. I'll pm you in a few days.

longassname · #**109** 05-18-2009, 11:55 AM

sounds good

svxfiles · #**110** 05-18-2009, 09:26 PM

OK,
I have one LAN TCU "chip" in a mostly stock SVX, and everybody who drives it loves it...
And I have another LAN, TCU "chip" in my Claret that I don't let anybody drive, (except Harry, and Jerry, lately, but you know that I'd let YT and Ben, or Dave, or Rufus, or Chi'ke, or even Bill, if he really existed, but I digress

)
Anyhoo, in both cars the chip kicks @$$, and you should all buy one!

longassname · #**111** 06-05-2009, 09:17 AM

How's the valve body in the claret treating you?

Quote:

Originally Posted by svxfiles

OK,
I have one LAN TCU "chip" in a mostly stock SVX, and everybody who drives it loves it...
And I have another LAN, TCU "chip" in my Claret that I don't let anybody drive, (except Harry, and Jerry, lately, but you know that I'd let YT and Ben, or Dave, or Rufus, or Chi'ke, or even Bill, if he really existed, but I digress

)
Anyhoo, in both cars the chip kicks @$$, and you should all buy one!

svxfiles · #**112** 06-05-2009, 10:27 PM

Quote:

Originally Posted by longassname

How's the valve body in the claret treating you?

Actually it's been great!
Jerry (subi-crosser) will be beating it at the Cumberland Autocross this Sunday.

longassname · #**113** 06-05-2009, 11:54 PM

Good to hear. I suspect he'll be all grins. Maybe he'll come tell us about it.

svxfiles · #**114** 06-08-2009, 05:26 PM

Quote:

Originally Posted by longassname

Good to hear. I suspect he'll be all grins. Maybe he'll come tell us about it.

Well, He liked it!

Jerry ran my Claret yesterday, in the second heat,
(He usually preferrs the fourth)
and said there was a HUGE improvement in the transmission,
the shifts were much faster, and it stayed in first and second longer.

I still do not have my SC pulley carved,

And I still have the stock cams in it.

But the thing that limited Jerry yesterday was the lack of slicks.
I have some new 245/45/17 Dunlop 5000 Sports on it, but He was at the limit of traction, a lot.
I am hoping to "find" some 17 X 8 or bigger wheels for cheap to remount the slicks on, and install the cams, and finally replace the SC pulley.
There is nothing like another 150 hp, along with some traction!

NiftySVX · #**115** 06-09-2009, 07:21 AM

Ok, so has anyone seen their AT OIL TEMP light come on?

Due to my recent transmission diagnostics I performed alot of stall testing, and I came across a mystery. If the fluid is above about 200, the light won't come on during the bulb check if you restart. I've got a sensor in my pan and it was reading about 219 at one point, and yet no light. My gauge could be off though. hmm.

longassname · #**116** 06-09-2009, 07:29 AM

During development I did. I set it to several different temperatures below the 176F that my transmission runs and verified the formula to calculate temp was correct by monitoring the atf temp reported by the tcu to the select monitor and recording the reported temp when the atf overtemp warning light came on.

longassname · #**117** 06-09-2009, 07:46 AM

Thanks for putting Jerry on the Phone yesterday. It's always nice to hear from a race driver thrilled with my products.

We can even kick it up a notch further. We can make ROMs specific for different race events. One option is to have a different ROM customized for each type of racing you do and just switch ROMs before the race. The other option is we can fit two versions of firmware onto the ROM and switch between them like we do with the ECUs. In the latter case you will need to use the ECUtune multi-tune adaptor I sell to the Skyline, Z, and Honda guys.

Quote:

Originally Posted by svxfiles

Well, He liked it!

Jerry ran my Claret yesterday, in the second heat,
(He usually preferrs the fourth)
and said there was a HUGE improvement in the transmission,
the shifts were much faster, and it stayed in first and second longer.

I still do not have my SC pulley carved,

And I still have the stock cams in it.

But the thing that limited Jerry yesterday was the lack of slicks.
I have some new 245/45/17 Dunlop 5000 Sports on it, but He was at the limit of traction, a lot.
I am hoping to "find" some 17 X 8 or bigger wheels for cheap to remount the slicks on, and install the cams, and finally replace the SC pulley.
There is nothing like another 150 hp, along with some traction!

NiftySVX · #**118** 06-09-2009, 10:12 AM

Quote:

Originally Posted by longassname

During development I did. I set it to several different temperatures below the 176F that my transmission runs and verified the formula to calculate temp was correct by monitoring the atf temp reported by the tcu to the select monitor and recording the reported temp when the atf overtemp warning light came on.

I'm not doubting that it works, I was just curious to see if anyone had seen it come on. I still think this temperature is way above anything the trans should see if it's working correctly. Mine hates to be above about 185 and will cool off very quickly if it is much higher than 195, even with the stock cooler. This new transmission really gets after circulating the fluid, the pressure on the cooler circuit has nearly doubled at idle from stock. Perhaps I'll see it if I get stuck in traffic later this summer when it's over 100 outside.

longassname · #**119** 06-09-2009, 10:15 AM

You shouldn't. If your cooler is working optimally you should never be above 176ish.

processengr · #**120** 06-09-2009, 10:23 AM

Quote:

Originally Posted by NiftySVX

I'm not doubting that it works, I was just curious to see if anyone had seen it come on. I still think this temperature is way above anything the trans should see if it's working correctly. Mine hates to be above about 185 and will cool off very quickly if it is much higher than 195, even with the stock cooler. This new transmission really gets after circulating the fluid, the pressure on the cooler circuit has nearly doubled at idle from stock. Perhaps I'll see it if I get stuck in traffic later this summer when it's over 100 outside.

Question:
Pressure on the cooler circuit; the stock cooler is considered restrictive. If it is bypassed, say into an auxiliary fluid to air heat exchanger that is less restrictive, the flow will increase and the pressure will drop. What effect (if any) would this have on system pressure to the rest of transmission?