Un-Kut

im talking full out gunning the car.... when it comes time for the 1-2 shift, the car bogs for like a quick second.... drops to 4800 rpm and taking a half second lag to climb.... its a very obvious problem for me and when my friends drive it too.... it kills the cars acceleration to 60mph by at least .1-.2 sec.

mltk53

yea i kinda noticed too. but it maybe just cuss its lack of torque.

rb1

If you shifted near the redline (not sure exactly where the VTEC cut-over is, but I think its in the upper 5000's), then the VTEC was in high-cam before the shift, and drops to low-cam after the shift. I'm not sure you're feeling lag as much as the kick-in-the-back of the VTEC in high-cam is gone.

Still, the 1-2 shift is difficult to finesse because the ratio gap is so large. 2nd gear really should have been shorter (e.g. less of an RPM drop), but then an additional shift would have been required to get to 60 mph, which would cost some precious magazine bragging rights.

synthetic

no it's not just you and you can purely blame the Drive-By-Wire for that.

It's the most annoying, disgusting and frustrating thing about the TSX.

No other car has this problem.

gftgrill

for me I found it to be smoother and quicker to turn off the traction control. whenever I shift from 1st to 2nd in higher rpms, the stock michellins try to slip so traction control cuts power and I get thrown forward. turning off the traction control improved the acceleration greatly, at least for me.

tsxy87

Wow I swear there are like 50 threads about this...

khmy2nr

The DBW on the new SI is even worse. Yes it is very annoying !!!

ole_dawg

When I saw your post I had to go dig this one up ... old, but interesting.

http://www.sportcompactcarweb.com/ed..._technobabble/

Un-Kut

traction control has nothing to do with it since its off when this happens

ck123

Dbw-its the cause of all problems

SirWaWa

this issue has been addressed and fixed
http://www.honda-tech.com/zerothread/1703810

Un-Kut

so its official name for the problem is "rev hang"?

SirWaWa

http://www.youtube.com/watch?v=dC8zFlQJ69k
http://www.youtube.com/watch?v=QP9XPXc5FoQ
http://www.youtube.com/watch?v=ALbkkQ21Ea4
http://www.youtube.com/watch?v=rWpo3ANGYJk <--- fixed with re-flash

gftgrill

ok, but for my car, turning off the traction control when reving that high in first got rid of the "bog" that you said you had.

if I have traction control on then the car lunges forward, if I have it off the tires squeel and I continue forward without problems.

but during normal driving the rpms drop slowly, but I've gotten used to it and don't notice it.

vidgamer

OK, I am missing something, I guess. What does the "rpm hang" have to do with bogging when you go from 1 to 2? When you fully engage 2nd gear, the rpms will have to match your speed!

I'm more inclined to agree with gftgrill -- if you go from 1 to 2 with the stock tires, you'd probably bark them, except that the traction control or vsa will take over and kill your power for you.

Yeah, I don't mind the difference in how it handles the rpms as far as the slow drop between shifts. And when I press the accel., I get good response; this is what I thought was the problem when people said "lag", that maybe their throttle response wasn't what they expected or something.

Un-Kut

have you been reading ANYTHING in this thread?

CJ Majesty

Word Turn off the VSA

Even then you have to shift just right for the lag not to happen

gftgrill

maybe you didn't read what you typed originaly.

you originally stated that the car bogs when shifting from 1-2. 2 things would cause the car to bog during that shift.

1. the vsa is kicking in and preventing the tires from spinning by cutting fuel to the engine.

or

2. your rpms are way too far from what they need to be for 2nd gear to engage smoothly. if this is the case, try not dumping the clutch during the shift, ride the clutch a little longer like you would from a stop.

during heavy acceleration I think that most of have found that the traction control does "bog" the motor to prevent the tires from slipping. turing off the vsa allows the tires to spin and keeps the motor from "bogging".

and I hate to break it to you, but if this "bogging" is "killing" your acceleration to 60 by .1-.2 seconds, then you probably should consider a different car. Must of would probably aggree that we couldn't notice a .1-.2 second difference in acceleration.

mltk53

nice vid about the fix. i wonder if the hondata on the tsx makesit any quicker too. hmm~wont know till i get one.

zidenx

iTrader: (1)

i'm wondering the same.

anyone have the reflash? is this problem fixed?

ninjamyst

I really hate how soccer moms in their mini-vans takes off faster than me from a dead stop or when other cars are up my butt cuz I launch so slow. Maybe someone can find me a vid of how to launch the TSX.

JTso

iTrader: (2)

http://video.google.com/videoplay?do...22554360275463

Note the VSA is on.

anTo

oooh very nice

gdcwatt

So, if that 1-2 gap in gearing is the issue, do people with 225/45-17's find it's less of a problem?

I've been trying to see if this problem is reduced with a "cold" engine, and while I think it is, my car lives in a garage and I still let it warm up, and I've been less than scientific about testing. Has anyone found that the throttle body coolant bypass mod makes any difference?