WOT shifting for autos

[SVOboy]

I seem to be the only on here that believe in the merits of WOT shifting; I also happen to drive an auto so I can't practice it much.

However, since I no longer am able to use my kickdown cable (tells the tranny when to shift based on pedal pressure) I can rig it up any way I like. I plan to stretch it only as much as needed so that it always shifts at 1800, no matter what. This will allow me to just floor it through all the gears and keep my rpms low, hopefully I can test this theory well.

What does we thinks?

[red91sit]

welll this is a tricky topic, all the companies use differnt programs to control their auto's and engines. Whats' best for one car might be very different for another. My car's auto tranny is completely seperate of the motor, I found best economy to be had by giong 50% throttle, and then letting off the gas to make it shift, then getting back on the gas haha, works great,

[GasSavers_BluEyes]

Originally Posted by SVOboy

However, since I no longer am able to use my kickdown cable (tells the tranny when to shift based on pedal pressure)

Be careful with this. I'm not familiar with the Honda transmission, but I know that other manufacturers use the throttle cable to not only determine shift points, but also to regulate transmission fluid pressure. The end result is if you have the pedal to the floor, but are only have the cable pulled in a tiny bit (to make the trans shift at low RPM's) the fluid pressure that applies the clutches inside the trans might not be enough to hold the torque, leading to slippage and fried trannies.

[bbgobie]

Hate to bring up something so old, but I thought it was interesting. If i'm getting it, we are looking to accelerate as hard as we can while staying in closed loop and shifting early?

I wouldn't mind helping to test this out since i have the manual "auto" feature in my RSX. Just wanna make sure I have the concept right, and wondering if anyone else has more info on their results.

[zpiloto]

Originally Posted by bbgobie

Hate to bring up something so old, but I thought it was interesting. If i'm getting it, we are looking to accelerate as hard as we can while staying in closed loop and shifting early?

I wouldn't mind helping to test this out since i have the manual "auto" feature in my RSX. Just wanna make sure I have the concept right, and wondering if anyone else has more info on their results.

Here's a thread on it.
What I found is that the numbers are so close that the way you accelerate is really not much of a factor. In a perfect world it might result is a very slight increase in FE but there are so many varibles dependending on traffic, lenght of runup till you stop again and slope that you really have to master all three accleration techniques to get the best possible FE. YMMV

[bbgobie]

If there is gonna be negligible difference WOT IT IS!

I tried driving around that way today. I got worse than my normal FE. But I made a bunch of short trips, with 2 bikes and the rack on the hitch, and A/C for the GF.

TOmmorow is wide open throttle day as I'll have my car at the track, but on monday its back to FE Driving for the daily commute. This tank of gas is gonna suck!

Originally Posted by zpiloto

Here's a thread on it.
What I found is that the numbers are so close that the way you accelerate is really not much of a factor. In a perfect world it might result is a very slight increase in FE but there are so many varibles dependending on traffic, lenght of runup till you stop again and slope that you really have to master all three accleration techniques to get the best possible FE. YMMV

[GasSavers_BluEyes]

I think whether or not WOT shifting makes sense depends on the traffic pattern. If you are in stop and go traffic it is not going to work. You are going to spend lots of energy to get up to speed then have to stop soon anyways. OTOH, on the highway get up to cruising speed quickly so you can get your best economy more quickly.