[Euro] Hondata Update

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17-09-2007, 02:54 PM
aaronng

Quote:

Originally Posted by BusterSonic12

just like after a month or so, any problem appearing etc. is the torque steering massive since that's a bit of kw on a front wheel drive.

vtec engage soo early LOL that's ike vtec on a normal straight road hahahhaa
i was planning to get a dc5r after my hsc's over, now i m tempted to sell my auto and get a manual + this.

It's torque that causes torque steer, not kW. You can have a 200kW engine FWD which makes peak power at 8600rpm but the torque is still the same as a stock k24a (223Nm), thus making it as drivable as a stock Euro (assuming you use the same gear ratios as the Euro).

That being said, the extreme package has an extra 80Nm to the wheels over a stock Euro, so there should be more torque steer than the stock car.
17-09-2007, 04:07 PM
E-Gene

I'll be popping into Revzone on Wed to get my Toda headers installed. Will check out the Jtune system when I'm there as well.
17-09-2007, 04:33 PM
ALN

Quote:

Originally Posted by aaronng

It's torque that causes torque steer, not kW. You can have a 200kW engine FWD which makes peak power at 8600rpm but the torque is still the same as a stock k24a (223Nm), thus making it as drivable as a stock Euro (assuming you use the same gear ratios as the Euro).

That being said, the extreme package has an extra 80Nm to the wheels over a stock Euro, so there should be more torque steer than the stock car.

What's the alternative to overcome the torque steer? will LSD do it ?
17-09-2007, 04:38 PM
EUR003act

Quote:

Originally Posted by ALN

What's the alternative to overcome the torque steer? will LSD do it ?

LSD will stop wheel spin... theres no real way to stop torque steer, its not a bad thing, u just have to adjust your driving to suit it
17-09-2007, 05:09 PM
ALN

Quote:

Originally Posted by EUR003act

LSD will stop wheel spin... theres no real way to stop torque steer, its not a bad thing, u just have to adjust your driving to suit it

Well isn't LSD function is to equally distribute the power to both front wheels as the torque steer may be caused by the too much wheel spin on one of the wheel. Correct me if I'm wrong.
17-09-2007, 05:17 PM
aaronng

Quote:

Originally Posted by ALN

What's the alternative to overcome the torque steer? will LSD do it ?

LSD will make torque steer even worse. :)
17-09-2007, 05:20 PM
aaronng

Quote:

Originally Posted by ALN

Well isn't LSD function is to equally distribute the power to both front wheels as the torque steer may be caused by the too much wheel spin on one of the wheel. Correct me if I'm wrong.

Without an LSD, you get one wheel on the slippery side and all the torque will go to the spinning wheel, so the wheel with grip won't have torque and hence won't accelerate.

When you have an LSD under the same condition, torque is transferred to the wheel with grip instead of being lost in the slippery wheel side. So you get torque on the grippy tyre and torque on the slippery tyre. So what does this cause? TORQUE STEER!

That is why an LSD makes torque steer worse. :)
17-09-2007, 05:21 PM
EUR003act

Quote:

Originally Posted by ALN

Well isn't LSD function is to equally distribute the power to both front wheels as the torque steer may be caused by the too much wheel spin on one of the wheel. Correct me if I'm wrong.

yeah but without LSD youd prob have one wheel spinnning the other gripping, so you could half steer... with LSD both wheels spinning, i think itd be worse
17-09-2007, 05:23 PM
^__^ SM ^__^

They havea JTune "Ultimate" package coming with the Toda cams.. :( Guess I won't be in a hurry to flash my ECU now and then reflash it to the Ulti Flash later.
17-09-2007, 05:28 PM
ALN

Quote:

Originally Posted by aaronng

Without an LSD, you get one wheel on the slippery side and all the torque will go to the spinning wheel, so the wheel with grip won't have torque and hence won't accelerate.

When you have an LSD under the same condition, torque is transferred to the wheel with grip instead of being lost in the slippery wheel side. So you get torque on the grippy tyre and torque on the slippery tyre. So what does this cause? TORQUE STEER!

That is why an LSD makes torque steer worse. :)

Great explanation, thanks:thumbsup:. I almost buy a LSD since I will replace my clutch again so I thought I could save labour cost once.
17-09-2007, 06:14 PM
yfin

Quote:

Originally Posted by ^__^ SM ^__^

They havea JTune "Ultimate" package coming with the Toda cams.. :( Guess I won't be in a hurry to flash my ECU now and then reflash it to the Ulti Flash later.

Maybe just get the extreme package now if you are interested. The cams will add quite a bit to the cost and if you want to upgrade the flash later you do not pay full price (i think only $220)

Does anyone know how much the base reflash actually costs to be installed? Can't see it listed on the install section.
17-09-2007, 06:31 PM
aaronng

Quote:

Originally Posted by EUR003act

yeah but without LSD youd prob have one wheel spinnning the other gripping, so you could half steer... with LSD both wheels spinning, i think itd be worse

Nah, with an LSD, both wheels are meant to grip, not spin. But with a helical LSD, it works by preventing spin. If the wheel manages to spin due to a factors such as low grip on both front tyres, then the LSD will end up working like an open diff.

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