I just finished installing the KPTechnologies speed shift module into my maxima. The speed shift part works really well and i like it quite a bit. The 2-step is still somewhat in development, but as you can see it is working.

This shows what the wiring connections are for the module. When you get it, it looks like it will be a ton of wiring, but in fact there are only a couple connections to the ECU, most of the wiring is between the module, relay and solid state switch.



This diagram was more or less taken from jime's safc wiring diagram, but i adjusted it to apply for this install. It shows the ECU specific connections and their pins



On the engine you will need to look for the main ignition power wire. It is 0V with the car off and 12V with the ignition switch on. I opted to take several continuancy readings from the wire to the coils before i cut it to make sure it was the right wire. The wire you are looking for is solid red with two grey dots, located in the main wiring bundle pictured below. Connect the yellow to the hot side and connect the grey wire to the coil side.


Now for the result. The 2-step on this one is stuck at 3800, this is what i was talking about as far as the 2-step working but still being a work in progress. It seems that the EEProm was locked when the code was locked, resulting in that 2-step RPM being locked. In the modules that are getting released soon this is fixed, i cant wait to get mine so i can go to a more street tires launch RPM. (sorry, not sure how to embed a video into the thread, can someone PM me instructions or a mod fix it? thanks)
http://www.youtube.com/watch?v=6wADOM3WpYg

The next video is a speed shift. its pretty hard to see from the video, but the shifting is considerably better. Its like no-lift shifting except you arent missing gears every time you shift. Its really hard to film a fast shift at any RPM, but i found redline to be literally impossible, so i went about 4k.
http://www.youtube.com/watch?v=NRojkqgNfJQ

go to http://www.kptechnologies.com/forums...&sd=a&start=30 to see how it was installed on a z. thats the write-up i used and it will help visualize what is happening. Overall im pretty satisfied with it. The install was pretty easy, as soon as the 2-step is working better I will really be happy.

will be going to the track wednesday to see if it helped my times at all

 

Wish the video's had sound, I get the 2-step but I am fuzzy as to what this "speed-shift" mod is?

 

I'm thinking this mod changes the car's computer to shift differently (on the automatic obviously) making it capable of accelerating faster. Can anyone confirm this?

 

its a 6-speed. the module cuts ignition for a preset amount of time when you push in the clutch, so you keep your foot at full throttle but the shift is as if you are off the gas. Its best for boosted cars because it keeps the throttle plate open and air flowing, which keeps the turbo spooled. ive noticed that full throttle shifting seems to pull a little harder than off the throttle shifts. i think this is because you arent letting off the clutch with the gas partway up.

 

There isn't a need for something like this if you shift fast enough

 

If you have a turbo, it keeps the boost up. GM has a similar system on the Cobalt SS, Solstice GTP, Sky Redline and HHR SS. Full throttle no lift shifts with a manual.

 

clearly you havent tried one on a boosted car. all the tests from all the people have shown a big difference in boost pressure. even on my NA car i can feel a difference, and i can guarantee i shift fast enough. how often do you race (real race, not street BS) your car?

 

If anyone needs one of these, I can provide them for you as well as the other modules offered by KP Tech.

-p

 

lol, youre not the only one, sure wish i had a video camera that wasnt just video integrated into a still camera

 

Very nice right up.

I vote sticky, in all motor tho.

 

I'm just saying that you can leave the gas pedal on the floor between shifts if you shift fast enough. You don't "need" a control module to cut ign while doing it...

I know that turbo cars run much faster times if they don't lift the gas pedal.

 

i have tried that SOOOO many times. about 1 in 5 gets into gear. i dont know if youve ever driven a 6spd, but they are super finicky to get into gear under WOT. the 3rd gear crunch is actually the 3rd gear stiff arm for flat foot shifting. for me this basically is the same but i dont ever miss shifts.

 

I'm not saying it's easy and I haven't driven a 6 speed maxima, but I have driven ALOT of other vehicles and I've been able to, what I call, "power shift" all of them. I can even do it in a '06 dodge ram 3500 cummins 6 speed.

 

lol. yeah i could do it in several other cars (only one i couldnt was a65 pickup 3 on the tree. shifts take so long i didnt even try), but on the 6-speed it honestly is a no go

 

i definitely got this more for the 2-step though. the speed shift is just an added bonus. i dont ever plan to go turbo so its not really essential, but for now you would have to pay me to race without it, can feel the difference while shifting

 

2-steps are awesome

 

Not a fan of the KPT unit, if only because it seems he developed and marketed it out of spite against Julian@MRC...

 

julian is half of the reason i got it. i hate the way he conducts himself on my350z, doesnt seem like a respectable person in my eyes, but you know how BS like that goes online. The other half is because i was a beta tester and i like to be involved a little and really dont mind testing stuff on my car, plus the discount is always nice. is the MRC unit out yet?

 

just curious - did you swap in the gauge cluster from an automatic or the 6 speed tranny from a manual?

 

let us know how the track goes and when you get the new module with the 2-step where you want it

 

I remember watching a guy I knew test out his 2-step in an Evo VIII a while back. I can recall hearing him stay at a certain RPM, but instead it sounding as a rev limiter does, the sounds were further apart in time, and not evenly spaced if I am correct. So instead of a ||||| sound, it was like | | || | ||, his launches were insane. Itwas a low 12 second Evo too.

I also believe 2-steps reduce/prevent bogging a significant amount correct?

 

the only way i see bogging possible with a 2-step would be an AWD car with an ridiculously long 1st gear, or launching second. on a FWD, youre MUCH more likely to spin than bog with a 2-step, unless youre using it wrong. i wouldnt mind picking one of these up myself, guess ill wait and see what people on the z board say about the new version

 

well the module worked great. i cant say the same for my ghey 3rd gear. Even at the stupidly high launch RPM of 3800 (street tires) i was pulling 2.11x 60's and really consistently. the shifting was also great. butter smooth into 2nd and 4th. my 3rd gear NEVER works. i tried an extra slow shift on my last run and still a no go. coasted to a 15.xxx at 61 so that means i was hauling ***** before the stiffarm. all in all i like it, but it will probly be for sale as soon as i get the updated one cause im done with this car. selling most of my mods since i refuse to track it again and i dont see any reason to have go fast parts on a car that never sees the track. anyway, just thought i would update with how it works

 

well i own a 6mt...and i agree that it can be done...if you are good enough to do it quickly

 

I thought the Cobalt was SC'd?

So for all the fellas saying 'if you shift fast enough'. Sure, that's important, but if you want consistency, this IMO is a good tool for that.

 

the cobalt WAS supercharged, but theyve since gone to a turbo version, within the last year or two. was the same for the ion redline.

big +1 to part two. unless of course 3rd gear synchros are totally f'ed and you cant get there no matter what. then you can expect to consistently miss, regardless of if you have this or not

 

I don't pay too much attention anymore.

 

and you can set this to be as low as 75ms, so for those of you who are super shifters, still no excuse. i have mine set to a pretty short amount of time, just wish i had a datalog with a time scale...o well.