ECU tune Transmission control unit?

[svxfiles]

I just got my 4EAT Performance Valve Body yesterday, YAY!
And I hope to have it installed tonight so that subi-crosser can "Test" it out at this weekends Autocross.

For those of you who haven't met Jerry, He is a good old country boy that can, (and usualy does,) break an anvil.
LAN, does this valve body need any break in?



I'm too Old for this s#!+Tom

[longassname]

No break in will be necessary. It would be a great idea to put a bottle of lube gard platinum or lube gard atf protectant in with the fluid though.

Originally Posted by svxfiles

I just got my 4EAT Performance Valve Body yesterday, YAY!
And I hope to have it installed tonight so that subi-crosser can "Test" it out at this weekends Autocross.

For those of you who haven't met Jerry, He is a good old country boy that can, (and usualy does,) break an anvil.
LAN, does this valve body need any break in?



I'm too Old for this s#!+Tom

[svxfiles]

OK, I finally have the new ECUTune Performance Valve body installed.
Long story, short. I pinched some wires and had to redo my installation. This with a full brake job, a frozen calliper, AC issues, TPS, O2 sensor replacement, ect for another well known members Son. in between.
Any how, the shifts are MUCH faster, and much firmer, all with the stock dropping resistor installed.
Mike,( LAN,) I like it.
I will report further when I get a minute..........................



Now off to fix my intake leaks so that Jerry can Autocross it tomorrow.
Tom

[svxash]

Will installing the ECUTune TCU effect the power mod at all? I have done the power mod but I'm not sure if I should disconnect it when I install the new TCU?

[immortal_suby]

Originally Posted by longassname

Soon we'll be porting these developments over to the stage 2 software .

[longassname]

Good question. You don't want to use the power mod with the new TCU. With my shift maps you want to let the power mode be engaged by heavy throttle application instead of using a switch to force it into power mode all the time.

Originally Posted by svxash

Will installing the ECUTune TCU effect the power mod at all? I have done the power mod but I'm not sure if I should disconnect it when I install the new TCU?

[svxash]

Originally Posted by longassname

Good question. You don't want to use the power mod with the new TCU. With my shift maps you want to let the power mode be engaged by heavy throttle application instead of using a switch to force it into power mode all the time.

Ok then. I guess I'll unhook the power mod and find a new use for the switch I made.

[NiftySVX]

Okay so is this as far as we are gonna go with the TCU? No one seemed to notice when I asked about some more modifications awhile back. I've been driving with this thing for a few weeks now and it is a good match to a built transmission. I like that it shifts at higher rpm, since there is more pressure (even though I have higher base line anyway). However, There is still a ton of room for improvement in this thing, I think we can really get a good setup going, since there are so many maps. Like I said awhile back, power mode base time increase and TCC unlock would both seem to be good areas to tinker with, IMHO

[longassname]

I didn't think I ignored any suggestions. I reduced the overtemp warning light thresholds like you suggested along with the overtemp mode thresholds, suggested that the torque converter lock up temp probably shouldn't be reduced, and said that tinkering with the power mode engagement might be an interesting line to pursue.

I'm still open to more ideas too. I also have one of my own I might like to try out when I get a chance. Selling 5 TCUs doesn't go very far towards paying the bills that come every month and doesn't put TCU development at the top of the priority list.

Originally Posted by NiftySVX

Okay so is this as far as we are gonna go with the TCU? No one seemed to notice when I asked about some more modifications awhile back. I've been driving with this thing for a few weeks now and it is a good match to a built transmission. I like that it shifts at higher rpm, since there is more pressure (even though I have higher base line anyway). However, There is still a ton of room for improvement in this thing, I think we can really get a good setup going, since there are so many maps. Like I said awhile back, power mode base time increase and TCC unlock would both seem to be good areas to tinker with, IMHO

[SVXRide]

Michael,
You still have one left at the special $199 price? If you do, please consider it sold.
Thanks.
-Bill

[longassname]

the free shipping ones are sold. We're at the $199 + shipping price for the next five. They are on website.

Originally Posted by SVXRide

Michael,
You still have one left at the special $199 price? If you do, please consider it sold.
Thanks.
-Bill

[NiftySVX]

I aplogize if I came off as impatient, I've just been waiting a long time for this. I've never been a fan of the manual swap because I think dollar for dollar we could make the car run better with the transmission it was designed to use. I've been asking for a remapped TCU for years...since before the ECM was first cracked. This is why I was an early adopter. I really don't think most have any idea what we could do with a remapped TCU. I think the greatest driveability increase for this car can come from a combination of TCU programming, a built valve body, and a high performance converter. The ECM may be able to be tweaked for a few hp, but the car can really come alive with a converter and a TCU with revised shift points. My car is significantly faster feeling with the full built trans, and a shift map that makes use of it would really be a useful addition. This is a good unit, but it can be so much better.

And, as for the lockup temp, my car still locks at about 100F pan temp, even with the new TCU.

[longassname]

No worries. I aggree that most people have problems imagining how much faster their SVX could be with a built transmission. While unfortunately there are a couple people out there in the shadows trying to slow the process, built transmissions are getting out there and even slowly making their way into the hands of forum members (most of my customers are not forum members). It's coming to a critical mass and it won't be long before the SVX network community comes to appreciate modified SVX transmissions and backlashes against those that have kept them from them.

Originally Posted by NiftySVX

I aplogize if I came off as impatient, I've just been waiting a long time for this. I've never been a fan of the manual swap because I think dollar for dollar we could make the car run better with the transmission it was designed to use. I've been asking for a remapped TCU for years...since before the ECM was first cracked. This is why I was an early adopter. I really don't think most have any idea what we could do with a remapped TCU. I think the greatest driveability increase for this car can come from a combination of TCU programming, a built valve body, and a high performance converter. The ECM may be able to be tweaked for a few hp, but the car can really come alive with a converter and a TCU with revised shift points. My car is significantly faster feeling with the full built trans, and a shift map that makes use of it would really be a useful addition. This is a good unit, but it can be so much better.

And, as for the lockup temp, my car still locks at about 100F pan temp, even with the new TCU.

[NiftySVX]

Originally Posted by longassname

No worries. I aggree that most people have problems imagining how much faster their SVX could be with a built transmission. While unfortunately there are a couple people out there in the shadows trying to slow the process, built transmissions are getting out there and even slowly making their way into the hands of forum members (most of my customers are not forum members). It's coming to a critical mass and it won't be long before the SVX network community comes to appreciate modified SVX transmissions and backlashes against those that have kept them from them.

I'm going to take a moment to echo this. To anyone who can read, listen well. I am usually aginst foolhardy modifications to vehicles (Things like cone air filters that draw hot air instead of cool air, when the stock air filter already flows well in excess of what the throttle body can, haphazard ehaust systems, etc). I got this way because of 10+ years of experience in import vehicle maintinece and repair. Now of course there are some intake and exhaust systems that can add a little bit here and there, I know some of our fellow SVXers have some good examples of this.

Having said that, if you're after bang for the buck, you want to pay close attention to what is going on with the transmission. This transmission was designed for a clientele that never embraced this car. With a simple valve body modification, you can make this transmission last longer and shift better at the same time. You can take a daily driver and change the valve body and torque converter and get a HUGE increase in sporty feel, the only drawback being shifts have gone from undetectable to slightly noticable. Many people think a built transmission will snap your neck and be tiresome. This is not the case. A properly built transmission will just shift faster, better, firmer, with a good, uniform shift across the RPM range (that last part was always a source of irritation for me on a stock svx 4EAT). Upshifts will be consistent, smooth,and have reassuring feel. Drivers who pay attention will notice that the transmission now has a feel to it when it shifts, a feel of positive engagement. Downshifts are truly spectacular on a built 4EAT in comparison. A full throttle downshift to 2nd in my car from 40 is really impressive and is something every SVX owner would downright demand once they experience it. Once you've got a good mechanical unit, you can use a TCU to move the shift points to take advantage of the new abilities and personality of the trans. THIS IS, IN MY OPINION, THE BEST OF THE BEST MODIFICATIONS FOR THIS CAR.

End rant.

[longassname]

good good

Originally Posted by svxfiles

OK, I finally have the new ECUTune Performance Valve body installed.
Long story, short. I pinched some wires and had to redo my installation. This with a full brake job, a frozen calliper, AC issues, TPS, O2 sensor replacement, ect for another well known members Son. in between.
Any how, the shifts are MUCH faster, and much firmer, all with the stock dropping resistor installed.
Mike,( LAN,) I like it.
I will report further when I get a minute..........................



Now off to fix my intake leaks so that Jerry can Autocross it tomorrow.
Tom