Re: Gearshift Maps
 

ok, I went ahead and updated my spreadsheet. Here are the plots of the shifts I like.

http://www.ecutune.com/posts/1-2shifts.gif

Re: Gearshift Maps
 

is anybody doing this?

Re: Gearshift Maps
 

Phil,

Wouldn't this be an easy implementation of paddleshift on the usdm?

Use the manual mode D range for the paddleshift.
Where it compares the looked up value with the calcuted value jump out and run your own code that says
if not in manual mode jump back to normal compare
if not in d range jump back to normal compare
if gear 4 jump past next line
if the input for the upshift paddle is active set looked up value to compare value for upshift
if gear 1 jump past next line
if the input for downshift paddle is active set looked up value to compare value for downshift
jump back to normal compare

Re: Gearshift Maps
 

Have you actually used a modded tcu yet? Forgive me if i missed it

Re: Gearshift Maps
 

I have. The shift maps I posted for the 1 to 2 and 2 to 1 shifts are the ones I am driving on right now. My 2 to 3 shift maps are also changed to shift at a higher rpm at full throttle and my rev limiters are all at 7800.

The information Phil has posted works where as the suggestion I just posted is probably a bit off since I'm not looking at the code and really cognicent of where the compares are made and where the bits are set and decisions are made..but none the less I'm sure Phil will get the idea behind taking advantage of all the existing logic and just setting a value on a momentary input. :)

Re: Gearshift Maps
 

So, you like the changes a lot better huh? I was considering this but am not in the "programming know how."

I can however solder :) I was interested in maybe getting a write-up/how-to with pictures posted up as far as the process goes. Any thoughts on that?

Re: Gearshift Maps
 

I posted the actual hex for my 1,2 shift maps so if you wanted to try them you could just paste my hex in the appropriate locations. I greatly prefer them over stock.

Do you have the hardware for writing a ROM to install into your tcu?

As far as socketing a tcu goes, i'm guessing Phil already has info on how to do that on his website. All you are doing is removing the surface mount ROM that is on there and installing a dip socket you can plug a dip package ROM into.

Re: Gearshift Maps
 

My buddy that is a tuner has a chip burner for 0bd1 honda roms but i dont know the number of the rom.

Have you completely mapped out what you want for your svx trans? or just partial. And what would you want for a pre-tweaked tcu? I know Tom said i could get a tcu for the price of shipping but then i have to send it back out again lol

Re: Gearshift Maps
 

Your buddy's writer will work and he will have the 256 rom you want too. You should tell him to go to my website while you are at it so he'll start using 512 roms and not need his 256 roms anymore. My multi-tune adaptors have always proven very popular with the honda and nissan tuners that have been introduced them (though there are more of them driving around Australia than the US--I doubt if there is a skyline left down there without one of my multi-tune adaptors in it).

Your buddy will also probably be able to help you with the socketing of your tcu. Almost all Honda ecu's need to be socketed.

I already changed everything I needed changed for my cars. I'm very happy with where my tcu software is now but remember my transmission is not the same as yours. I don't suffer from lazy shifts to begin with; that was changed in the tansmission hardware. People with stock transmissions might want to modify more.

Re: Gearshift Maps
 

My cars got the full level 10 stage 3 Xmission in it :)

Ill send my buddy over to your site and see what he tells me. In the meantime ill wait on the TCU from tom just to make sure he has the time to do it

Re: Gearshift Maps
 

Your buddy will love you for introducing him to the multi-tune; there are so many uses for it on a honda and a lot of them involve the tuner selling twice as much dyno time.

If he does a lot of tuning tell him not to order retail. I generally sell them wholesale in perforated sheets of 40.

Re: Gearshift Maps
 

YA, he does a load of tuning and works at Bishop motorsports in CT. I know for the day i get back into my 4ws prelude I have an ostrich for on the fly stuff.

Re: Gearshift Maps
 

It looks good to me in theory.

I was thinking to adapt Ryan's paddleshift code because it is tested and working rather than try to write something new. For example, he has safety checks in place so that you can't change down if the mph is too high and will overrev the engine.

I really want to get back to playing with the TCU. But I've been distracted by another project. I'm busy helping a guy to find the parameter addresses for his Impreza EJ15 ECU. It's a Hitachi unit and the code is quite nasty.

Re: Gearshift Maps
 

Anyone doing it would have to check/pay attention but I'm thinking if we were to choose the right value to set and the right place to set it those existing safety features in the manual mode could be retained. Anyway, was just a thought and not even researched yet.

Re: Gearshift Maps
 

You've hit the nail on the head. I think the best way to do it would be to point the lookup routine at the existing manual mode maps.

Use Manual mode with stick in D, like you said. Rewrite the manual-stickD maps to hold 4th gear.

Then override the stick position variable from D to 1,2,3 or 4 (ie. D) depending on the gear selected with the paddles (stored in a separate variable).