cmjaure

I was reading on a 13b-re and it says that you cant use the stock ecu and i need to know why. thank you

MARTIN

Well, Ill answer it to as best of my knowledge.... Supposedly the cosmo ecu needs the inputs from the rest of the computers onboard the car, or itll go into limp mode. And the only way to get rid of that, is with a reflash which only topsecret(iirc) does and itll cost an arm and a leg. Anyways, standalones arent that expensive.

BlaCkPlaGUE

Wow, no wonder no one uses it. For the longest time, I was always wondering why someone doesn't just keep the stock sequentials and have the engine working without a standalone. It all makes sense now, I also always thought that people were always just like "use standalone only" becuase they are performance freaks.

This wasn't mentioned on fc3spro.com. Ted, maybe you could add that little tidbit?

RETed

ALL Cosmo's come with automatic transmissions.
The automatic transmission is tied into the stock ECU programming.
Unless you're planning to use the Cosmo auto trans, you need to fool the stock ECU into thinking it's there.

This is not easy.
I've heard of people being able to use the stock Cosmo ECU without the auto trans, but don't ask me for more info - I really don't know.

We use Haltech EMS' on all Cosmo installs.


-Ted

NZConvertible

A mate of mine did a 5-speed swap on his 13B JC Cosmo and also did one to another mate's 20B Cosmo, both with stock ECU's and functioning sequential turbos. It's just a case of tricking the ECU into seeing the correct inputs for the auto's operation, usually by wiring resistors across the redundant plugs.

I'm seeing him next week (he's building me a new 3" DP/MP for my S5 turbo swap ) so I'll try to remember to get some more info for you guys.

Note that if you use the stock ECU you also need a complete loom (cut ones are common) as well as the AFM.

cmjaure

I do have everything complete uncut wireing afm intercooler oil-cooler ecu and some other little black box havent really had time to mess with everything yet. thanks for the info and NZ that would be great to get posted here for anyone who is or will ever try to do this with trhe stock ecu.

MARTIN

They didnt use map like the s6?

NZConvertible

Nope, JC's used a sliding cone AFM like the S5's, only bigger. It would probably be a good upgrade for S5's...

MARTIN

Nice. Good thing I got rid of the afm all together.. Much cleaner look and setup.

rocky_turbo2

what are a couple of tricks i could do to my 13b injection motor to make it faster

MARTIN

Off topic guy.... search.

cmjaure

Well all of my plans for the 13b-re swap went to hell. The engine had bad compression on the back rotor. I think I am just going to go with the 13bt s/5 swap The company that I got the engine from is going to send me a swap for that. So I guess that will be easier. Oh well.

NZConvertible

That's a shame to hear, but since I promised the info on the ECU, here it is. I spoke to my mate today, and he said the auto is not controlled by the engine ECU. It has its own ECU that doesn't affect the engine's one. He simply unplugged it (since it was no longer connected to a gearbox) and had zero problems. No error codes, no change in engine behaviour. All he had to do was bypass the inhibitor switch so it would start.

cmjaure

wow so it can be done easy wish my engine was good.

RETed

Good luck getting the coils and possibly another harness.
A front-cut should have all those things...


-Ted