Can the ECU be Remapped?
 

Hi All.

I was sure I read that the SV ECU can be remapped so you don't have to buy a Power Commander. I phoned Double Take Dyno in Southampton yesterday. They said they had never heard of it and that I needed a Power Commander.

It's a K3 model. Any ideas on this people?

Thanks
Tim.

Re: Can the ECU be Remapped?
 

Double Take Dyno are lying (or uninformed...) as you don't need a Power Commander.

At many Dyno centres, they can offer you a 'Yoshi ECU Editing' thingy... not 100% of the name now, but basically it's about £60-80ish, they put it on a Dyno, plug your ECU into a computer, and they can alter the fueling where needed by up to 5% either way from standard.

This is ideal for anyone who's put a free-flowing exhaust on and wants to get the fueling sorted out as cheaply as possible. I guess this is what you want it for?

Edit: I think it's called a 'Yoshi Box'!

Re: Can the ECU be Remapped?
 

steve jordan motorcycles can do it...

Re: Can the ECU be Remapped?
 

What ^^ says.

Double Take possibly just are not aware of it.

There are three systems.

Yoshi and Teka boxes can be used although they have a very limited range of adjustment. Costs for this are about £60-£80.

We use a system that can remap the stock ECU with multi positions and throttle openings creating a far better map. Plus because your utilising the bikes own software it works alot better than using an aftermarket box such as the Power Commander. Plus it works out cheaper as you dont have to buy the PC. Costs about £120.

Its only available for Suzuki's at the moment though.

Re: Can the ECU be Remapped?
 

Just out of curiosity, what system is that?

Re: Can the ECU be Remapped?
 

Thank's for all the info.

I found a place in London using Google that said they can remap the standard ECU.

Steve Jordan sound promising. A bit far to though as I am near Portsmouth. I'd enjoy the ride though.

I need to check the valve timing, throttle balance and TPS adjustment before doing anything else. In case I got anything wrong after taking the front head off.

Tim.

Re: Can the ECU be Remapped?
 

What kinda system does the Stock ECU navigate on ?

Speed Density based , ie MAP sensor or MAF sensor type... or eve something completely different ?

Re: Can the ECU be Remapped?
 

Not that I'm an expert on the pointy, but I believe its a pressure sensor in the airbox

Re: Can the ECU be Remapped?
 

Tim - Steve Jordan's could check all that for you at the same time ;) The ride up there is no problem, you can either blat up the A3 or take the twisties, when I went up there I borrowed a courtesy bike and nipped up to Boxhill for a burger :smt023

Re: Can the ECU be Remapped?
 

if the sensor is in the Airbox , it would sound like a MAF sensor type setup (since pre-butterfly is always Atmospheric unless uve got a turbo with a blow through system , and a MAP sensor type requires the sensor after the butterfly to detect Vacuum as well as Atmospheric or positive).

Luckily , there not to hard to trick into changing... Im guessing thats how these ecu fuel modifiers work... piggy back style.

Re: Can the ECU be Remapped?
 

But you know the characteristics of the throttle valve and atmospheric pressure, and rpm, so you can find dM from that.

Pressure sensors are cheaper than MAF sensors too :-P

Re: Can the ECU be Remapped?
 

True...

Am a Honda buff so as far as im concerned , MAF sensors are the work of the Devil.

MAP for proper systems lol :smt023

Re: Can the ECU be Remapped?
 

Some cars use MF sensors, seems a daftoption to me, some of them are actually wires held in the airflow, so the cooling effect of the air on the wire shows you the velocity.
Others use a spring loaded flapper valve to sense it, which gives you a load of turblent effects which you don't need with high pressure injectors mixing the fuel for you.
Much prefer things with names like weber, CV, side draft etc and nice little components inside you can actually fix if they go wrong.
Bloody environment making my life complicated :p

Re: Can the ECU be Remapped?
 

Suzuki use:-
Manifold pressure sensor
Atmospheric pressure sensor
Intake temp sensor
Coolant temp sensor
TPS

Maf sensors are for cars and even then on better systems they go to MAP type system.

Re: Can the ECU be Remapped?
 

it has a sensor for the atmospheric pressure ? , thats pretty cool to be honest.

The only sensors ive got car wise is a MAP , TPS , IAT & ECT. It also had Lambda but since goin turbo weve disabled the computer to read closed loop and opted for permanent open loop for the wideband to work correctly without ECU interference.

The fact Suzukis detecting the Atmospheric pressure aswell as MAP inside the plenum though surely means you could almost drive these bikes anywhere ? , on sea level or even up a mountain

Re: Can the ECU be Remapped?
 

Pretty much, I think it has both so as to compensate on bikes with SRAD like the TLs

Re: Can the ECU be Remapped?
 

You forgot the Crank Position Sensor as well. ;)

Re: Can the ECU be Remapped?
 

Yes, and with this sensor down stream of the filter it should compensate for the state of the filter as well.

At a guess Suzuki may use the same ECU for all of there bikes that use the two throttle system, but with a map tweaked for each model.