Fly by wire pedal remap help

[eff eff]

Can any one give me some insights (who, where) into remapping the drive by wire pedal.
I have an LS3 engine in a non-GM car but with a stock run kit.

[Magic919]

I guess you have an E40 ECU. Not seen many people alter the pedal response, but can be done. You could try posting on the Monaro section as the VXR8 uses that lump. Monkfish or some of the other tuners might do the job.

[eff eff]

Thanks for the quick response

[ringram]

If its a GM crate it will be an E67 ECU, ifs its out of another car it will be an E38.
Yes you can change throttle response but its not recommended and can cause the ECU to failsafe permanently.

If you are just asking the generic question can you tune the drive by wire ECU's then the answer is yes.
EFILive of course does this no problem. You can get a free demo off the site.

PM me if you want more info

[BlackZeD]

You could try searching on "corvetteforum.com" for
"chuck cow throttle response" makes interesting reading.

Dave

[Gixer]

BlackZeD said:

You could try searching on "corvetteforum.com" for
"chuck cow throttle response" makes interesting reading.

Dave

Interesting reading

[anonymous-user]

Gixer said:

Interesting reading

Yes, and leaves me confused. Changing the pattern/ratio between pedal movement and throttle opening will change the feel of the car - a bit - although I don't see how this will really add anything. If you want the throttle opened more quickly then surely you just push your foot down more quickly?

Some of the claims being made seem to me impossible unless there IS a change to the engine mapping - illegal in some states? - which the makers deny. If all he's doing is changing the shape of response to give a turbo-like surge it appears a backward step!

Cow Boost or Snake Oil?

[Gixer]

Makes a lot of sense to me. Jumping from one to the other and I can say I notice and still prefer the 'feel' of a cable. Blipping the engine down through the gears for example. It's not just Vettes, I've heard Mustang owners and owners of some euro cars moan of similar.

There was a thread on gen gassing a while back. Think mainly talking of BMWs and its thought one of the reasons they do it is so to reduce the stress on the drive line. You can stamp on the pedal and think you have wide open throttle but unlike a cable you won't have as the ECM will apply it in a more civilised manner.

[anonymous-user]

Yes, common complaint about recent BMWs. I always thought it was a feature of controlling emissions rather than mechanical protection. That's why I was surprised by the Cow Boost claims.

Back in the day cars used to have an accelerator pump on the carburetors. My twin Dell'Ortos used to give razor sharp throttle response by the simple expedient of dumping a massive amount of fuel into the engine. To cold start the car you didn't need the choke - just a couple of dabs on the throttle pedal before turning the key.

[Gixer]

I bet emissions and mpg do play a part in it.

They were talking on the radio yesterday to the editor of What car I think it was, they've been testing cars for mpg in the real world and comparing to gov figures. Some are 45 mpg out!!!! So what you might say, well said car had free road tax and yet it's real world mpg put it in the over £200 bracket!!!

[packman10_4]

Give Warren at Topcats Racing a bell , he has someone come in a tweek maps for differant levels of tune.

[vetteheadracer]

I had my C5 Z06 throttle pedal fly by wire remapped to run with a MOTEC M800 ECU. There are 2 things that the ECU monitors. 1 is on the pedal the other is on the butterfly on the throttle body. (can't remember the technical name for the electricasl gizmos).

Anyway, as 1 increases from 0-100% the other one decreases from 100% to 0% (this isn't quite true as they both have a range which is less than 100%). The ECU monitors the signal (resistence from both) and that is a very non-technical explanation of how they work.

Anyway if you need some advice give Rich or Dirk at Powerstation in Tewkesbury a call and I am sure they will be able to help you as they have installed and number of GM power plants in various race cars as well as working on my C5 Z06.