Probably switching the case, here are a couple threads that may help you out a bit.
Difference in the cases
Turn a 5 spd into a 6 spd

 

You have to do more than just switch the case. There is and extra set of teeth on one of the gears that are in 02-04 trannies. If you simply swap casings, your 05-07 tranny never came with this extra set of teeth to turn the speed sensor. So once you drill the whole for the speed sensor it will just sit there reading 0mph forever.

If you want to run an 05-07 tranny you don't have to swap casings just get a signal converter. I have been running one since December of 2005 and have never had a problem, except for a loose ground (my fault). This way you can use either tranny with little effort.

 

Okay, you're crazy as hell and I cannot believe that you actually said that the 02-04 trannys have an extra set of gears that turn the VSS speed gear. The FACTS are the VSS is turned by the differential, its basically pressed on there and as long as your tires are moving its gonna turn the VSS and you'll have speed.

THIS IS HOW YOU GET A 05-06 TRANSMISSION INTO YOUR 02-04:

-Get a 05-06 Tranny
-Get a 02-04 VSS - Speed Sensor
-Buy a 02-04 Differential or this is a great time to get that LSD quaife or whatever you want but it has to adapt with the VSS gear.
-Exchange the 05-06 Final Drive Ring Gear and put it on the 02-04 differential or the LSD differential but make sure theres a VSS gear on it.
-Go to a machine shop or drill a hole big enough so the VSS can slide into place and turn(s) as the differential turns.

What so difficult about that?

Thats it, use a 05-06 Tranny and modify it with 02-04

 

ohh where can i get a signal converter?

 

http://www.dakotadigital.com/index....ge/ptype=product/product_id=126/category_id=287/home_id=59/mode=prod/prd126.htm

This is what I have been running for over a year now. No problems, it converts Hall effect sensors which is what the 05-07 type-s trannies use.

 

with this product
will my Mileage gauge still keep track of how many miles is on my car. Because right now speedo dont work plus the mileage.

 

http://www.dakotadigital.com/index....ge/ptype=product/product_id=126/category_id=287/home_id=59/mode=prod/prd126.htm

This is what I have been running for over a year now. No problems, it converts Hall effect sensors which is what the 05-07 type-s trannies use.

is the installation easy? my car is a 04 rsx type s stock

 

You have to do more than just switch the case. There is and extra set of teeth on one of the gears that are in 02-04 trannies. If you simply swap casings, your 05-07 tranny never came with this extra set of teeth to turn the speed sensor. So once you drill the whole for the speed sensor it will just sit there reading 0mph forever.

If you want to run an 05-07 tranny you don't have to swap casings just get a signal converter. I have been running one since December of 2005 and have never had a problem, except for a loose ground (my fault). This way you can use either tranny with little effort.

Were you able to retain cruise control with the converter? Ive heard cruise control gets disabled for whatever reason.

 

I do not have my cruise control installed at the moment. One day, I plan to hook it back up but I do not see why it would not work. The whole thing is how you wire it up. You have to tap in to the vss wire before it splits. As long as you do it before its splits, then the ecu and speedometer will see the same speed signal. So I believe it would work. K-pro and the speedometer read the same as far they are concerned I am running a regular 02-04 tranny. The speed signal is perfect, it doesn't jump or do weird things, it is just like stock. You will not be able to tell any difference.

 

I do not have my cruise control installed at the moment. One day, I plan to hook it back up but I do not see why it would not work. The whole thing is how you wire it up. You have to tap in to the vss wire before it splits. As long as you do it before its splits, then the ecu and speedometer will see the same speed signal. So I believe it would work. K-pro and the speedometer read the same as far they are concerned I am running a regular 02-04 tranny. The speed signal is perfect, it doesn't jump or do weird things, it is just like stock. You will not be able to tell any difference.

Thanks for the reply man. Im going to look into purchasing this. I have an 06 trans going in and an 03 trans going out. Rather keep the 03 trans in tact for resale.

 

What calibration did you use for this converter? I am about to buy one if you would tell me the settings you used.

 

i do not need kpro to use this device right?

 

is the installation easy? my car is a 04 rsx type s stock

What calibration did you use for this converter? I am about to buy one if you would tell me the settings you used.

Installation is pretty easy. If you have ever run wires for speakers, foglights, etc, then you will be fine. Basically you just cut the VSS wire before it splits to go to the ECU and the cluster. Then run the wire coming from the VSS into the input on the box. Get a wire and put it on output 4 (could be output 3) and run that to the VSS side that continues on to the cluster and the ecu. You have to hook up another wire to the "Power" slot, and the "Ground" slot. Then you have to set the dip switches. It comes with instructions and you should basically follow them. However, the dip switch settings were wrong. So I had to figure it out between what it had and what I thought would work. Switch 1, 2, & 3 should be "up" and switch 4 should be down. That should get it to work the ecu and cluster just like stock. Depending on your tire set up, you will probably need to fine tune it after that. Mine was off about 5% or so. I had my buddy pull up next to me in his car and we matched speed. I highly recommend having someone else in the car. I didn't, (not a smart idea). I also testesd it after that on radar traps and it was perfect.

Hope that helps:up:

 

This is not the same as bigcalidave's converter correct?

 

i do not need kpro to use this device right?

This device is independent of K-pro. If you are using a PRC ECU it will work also.

 

Im going to go ahead and pick this thing up. Thanks for posting your experiences with the device.

 

any input on this b4 I buy

 

ok so with this device your saying that i can run the 05-06 tranny in my 02 rsx without any problems i dont need to switch the clucth casing or anything so if i wanted to run a 07 si civic tranny with the factory lsd i can do it without a problem with this...? i've been researching this for a few days and this is the best solution i've found other than swithing the clutch cases to keep my original vss and now you guys are saying that this won't work so this is my only option correct??? any input would be apprecaited thanks

 

Yes, that is exactly what I am saying, it will work. There are other options also, but it took me months to figure this out and it was the easiest and cheapest:up: , for me anyway

 

looks like exactly what I need...

 

did u use you 02-04 wiring harness or your 05-06 wiring harness let me knwo thanks cody

 

I used an 02-04 wiring harness but I had to get an 05 vss plug and splice it into the 02-04 vss plug.

 

thanks man for the help

 

i know this is an old thread, but i want to bring it to life and shed some light on the topic. well, i was thinking of getting the 06 si tranny and use with my z1 motor in my ep chassis. right now im using an a2 tranny. would this converter unit work for getting the z3 tranny to work with my set up? is it a simple install z3 tranny and connect the converter unit?
help is greatly appreciated. thanks in advance.

 

As far as the wiring goes for your motor, I am definitely not sure of what you should do except a lot of research. I am going to guess, and say that if you are using a z1 motor that you will probably want to use an a2 harness for it or a z1 one harness that has been converted (I believe Hondata sells it or Rywire?) to run on an a2 ecu. The z3 tranny should work just fine, but you need to read the instructions posted before about what you have to do. Basically you will probably have to get the plug for the vss from the donor car that you got the tranny from. Then hard wire it into the a2 wiring harness. I would NOT recommend cutting the vss plug from your good a2 harness. Again, DO NOT cut your good a2 vss plug from your good a2 harness (I have destroyed my 05 tranny and am currently using am 04 tranny with my original a2 vss plug). Just splice into the wiring of your original vss plug and have two plugs. One for 02-04 RSX-s trannies and one for the 05-07 trannies, I am not sure if the 05-07 plugs fit the 06-08 Si's.

The converter is adjustable so it works for different scenarios. Put it this way, I found it by looking on a mustang site. Actually the setting that works for us is not a "standard setting" in the book. It took me some guess work, I mean thorough research, to get it working. As far as hooking it up, if you can install a car radio or run your own wire to an amp and speakers then you can install this.

This is not the same as bigcalidave's converter correct?

I think they do the same thing but they are two different products.

i know this is an old thread so i hope someone still checks it....ok i have a k20z1 and the 06 tranny that goes along with it but im putting it in a ef9 so i knew i would have to run the 04 tranny so i just got my harness converted so does that mean i cant run the signal converter cause i changed my wiring harness??? im also running 04 k-pro.....please help very confused...thanks

If you did not convert your harness, the answer would be yes. I do not really know exactly what they do when the "convert the harness" so I do not know if the signal converter will work for you now.

I think you might not need the signal converter, you just should enable 05 vss mode in K-pro since your harness is converted, but I am not sure.

 

good info in this thread!

 

i know this is an old thread so i hope someone still checks it....ok i have a k20z1 and the 06 tranny that goes along with it but im putting it in a ef9 so i knew i would have to run the 04 tranny so i just got my harness converted so does that mean i cant run the signal converter cause i changed my wiring harness??? im also running 04 k-pro.....please help very confused...thanks

 

did you get a2 harness or you still got z1 harness? from my understanding, the a2 harness is what you will need to run that set up in an ef. The signal converter unit will help you use the tranny with that harness and ecu. correct me if im wrong guys. hope this helps.
also, i want to run a z3 tranny with my set up, im sure it will work with this converter. but i want to clarify. who here is running with this converter unit?

 

ya i got my z1 harness converted 2 a A2 harness by Ryan at Rywire....soooo ican run the signal converter with my A2 harness Prb K pro and my 06 z1 transmission???

 

I Have a slightly similar problem ..I have an 03 rsx trans and want to use the 06 si LSD does the speedo ring fit onto the LSD ?????

 

I did this with no machine shop and a uni-bit. I have an 05 tranny and i just got the 02-04 diff and VSS then i drilled away, i checked to make sure the vss was in the hole straight and then DONE! this is not very hard and there is NO need for all of these harnesses and complicated wiring conversions when you can just do it the old fashioned way!

 

Hey can you take a picture of your tranny so we can see? I already believe you but some people on the internet is really freaking retarded and cannot comprehend that its been done because they are incapable and stupid.

http://honda-tech.com/zerothread?id=2207306

Check out this joke name neo_ speaking about how hes never seen it done. What a moron cause he said someone with 13 posts must not be believable.

 

No prob man. xhadudkenx I think your right, that would be a good idea. I would like to get an 06+ si tranny like that for the LSD. Having it already compatible with both types of vss takes all the headache that we both went through out the window. All the new guys doing swaps have it easy