irollerblade

I was looking at purchasing a new Si and the one I test drove had Like a full second response from when I hit the gas till the car actually moved, it was really noticeable are they all like that?

i-VTEC_DOHC

mine its pretty much dead on with reaction time.
the only time it lags is when the clutch isnt fully engaged which is the hill assist feature.

irollerblade

Idk why this one was doing this then. I was just like uhhh whats going on haha.

i-VTEC_DOHC

my car was like that when i first got it.
it was fine after a few days after the ecu adjusted to the climate and elevation change

vladd

a full second is pretty bad. i have a delay in mine too but it's a split second, not too noticeable.

SImadness

hill assist feature?

203_EM2

I never noticed a difference in mine between My Mugen and my old em2

irollerblade

Yeah I drove my friend's Si and did not notice anything, I'm guessing the car might not be running right.

ajpturbopittsburgh

Wait. I don't think the Si has a hill assist feature? And you wouldn't want lag on the throttle when you are sitting on a hill. If you did you would drift back even further waiting for throttle to come on. A car with hill assist uses brakes to hold the car in place while you engage the clutch

vladd

the em2's have a cable throttle, don't they? you really can't notice the difference between cable and electronic?

07FG2

Why is it called 'drive by wire' when its electronic?

vladd

because you have electronic wires between the pedal and throttle body instead of a cable.

thesmogman

I just took my update class for smog and they now call it "ETC" or Electric Throttle Control.

This system does have some learning to do, as it does take a bit to adjust to the drivers demands. It will get use to what the driver does as long as he does it normally all the time.

This system does have other features like: Guessing what the driver is going to do and adjust for it before the driver does it. It is suppose to help emissions by pre-planning what to do if....... then I will do this. You get my point.

Another thing it will do is provide feedback to the pedal too. Just in case you feel something moving your foot.

What will be next?

24boosted

iTrader: (1)

Shift into the wrong gear and you will have delays.

I have two gauges, digital boost/vac and electronic boost/vac gauge in my Si, absolutely no hesitation. Gauges are registering instantaneously with pressure on the gas pedal. If there were any lag with the DBW or ETC as mogman pointed out, the gauges would be slow to react as well.

dirtySOHC's

really good info....i had no idea it took time for the system to get into a "rhythm" with the driver.

07FG2

Man sounds like my car is going to get smarter than me and become a TRANSFORMER!!! also reminds me of that irobot movie

Does it have to relearn every time you start the car up? Or does it have like a memory bank? If someone borrows my car for the day, will it adjust and learn that quickly?

24boosted

iTrader: (1)

This has been known for some time, even with some prior Honda ECUs. Why piggy back tuning systems don't do so well. The ECU learns to readjust against the piggy back as well as adjusting to driving conditions. Disconnect the battery for a few minutes usually resets the memory. Do a search, even older Hondas had "learning" ECUs.