News

Need a solution to deal with drive by wire throttle delay

From the time I've got the Alto there's one thing that has been bothering me and it is the off-idle throttle response.

BHPian ashwinprakas recently shared this with other enthusiasts.

Hey Guys,

From the time I've got the Alto there's one thing that has been bothering me and it is the off-idle throttle response.

At times the throttle response is noticeably delayed and this only happens off-idle, say that I'm driving and face traffic so the car slows down to the point of a halt and then when I shift into 1st and try to launch the car the accelerator input is delayed which results in lugging and stalling, I have adapted to this by slipping the clutch a little too much and going on and off the throttle till it responds.

This is not consistent in the sense this happens out of the blue.

Did a lot of research and found that the reason for it is that DBW accelerators are tuned for FE and emissions and as a result there would be delays at times.

However coming from cable operated accelerators I simply cannot get over this mentally.

I did reset the throttle body via OBD a while ago and idled the car for about 3 minutes as advised by fellow enthusiast Sibun, however I was unable to drive it enough to make sure that the issue has been completely resolved.

Do share your thoughts.

Regards,

A.P.

Here's what GTO had to say on the matter:

Never noticed it in 90% of the 30 - 40 new cars I drive every year. This might be specific to Maruti's tuning of the engine / drive-by-wire. What I do hate though is the intentional rev-hang that a few cars have for emissions purposes. It is damn, damn annoying. Don't remember which car, but I did observe it in one of the Renaults.

Here's what BHPian clevermax had to say on the matter:

Some companies overdo this 'smoothening out' of the quick throttle inputs to save on fuel. This is not an inherent latency of the drive-by-wire itself. Even if you stamp on the pedal, the system will condition the input to smoothen it out in time to optimize fuel usage and to take care of emissions. This is what I had learned from some reading up and talking to the tuner during my car's tuning process. This behavior can be corrected only by an ECU tuner. You should talk to one of the reputed tuners. I think this falls into the category of "pedal tuning".


When corrected, you can expect instant throttle responses.

Here's what BHPian IshaanIan had to say on the matter:

There is a thread on a product called "PedalTune" on this very forum. It is supposed to help with lag in throttle response this is something I feel in nearly all cars these days. Some cars are worse than others and it seems like Maruti is the most notorious when it comes to throttle delay on their DBW cars. It makes driving difficult, rev matching becomes an unnecessarily extra calculated process etc. I suppose the best way to sort it out is with an ECU tune or one of these products that tricks the system into cutting the delay and decreasing response time.

Here's what BHPian akshay4587 had to say on the matter:

I am using one of these Throttle Controllers in my Alfa Romeo 159 in Australia.
I just love this device; It does not increase the power or makes your car faster, but the way it let's you fly off the line, the moment you mash the pedal is amazing.


https://www.ultimate9.co/au/throttle-controllers

I am planning to get it for most of my vehicles on the next trip, especially for the Thar.

Check out BHPian comments for more insights and information.

 
Got BHP?