Street driving Re: Torque dip

[Nepenthe]

Originally Posted by mclevin

Would final drive affect this torque dip? Or just move it into a different rpm range

No. The torque dip is locked into a certain RPM range regardless of gearing. What different final gearing would do is change the road speed at which the dip is experienced in each gear.

[ed209]

Originally Posted by Nepenthe

It dips down SO low that at its absolute trough it's STILL making more torque than the four cylinder engine with the same bore and stroke that my last car had at the same RPMs.

This is not the car for you.

i never said the thing was undriveable, i said its an idiotic problem that should not be there in the first place. i know a thing or two about small displacement, i built hondas for the better part of a decade and i own a b18c5 powered integra and a '93 miata LE, neither one of which has this idiotic problem...

[Username]

I have found that due to a combination of the torque dip, and the break-in period, (no we don't need to discuss how the engine break-in is wrong here) I drive this car at a much more leisurely pace.

When the car looks this good I don't mind giving people a chance to gawk at my car as I drive beside them.

In regards to OPs post, I do find the torque dip to be rather harsh, but as already mentioned I have started to learn how to drive this car in two separate "modes". Below 4k for around the town, and keeping it above 4500 for all freeway on-ramps and and quick zipping around.

While the dip is very noticeable, I do not think that it is so bad that the car should have not been released / is unacceptable.

[ed209]

the car is perfectly driveable the way it is, but this dip is annoying to the point that it is almost laughable. simply put, there is no reason for it to be there and i challenge anyone find me another new car that has the same problem.

[Synack]

Originally Posted by Username

I have found that due to a combination of the torque dip, and the break-in period, (no we don't need to discuss how the engine break-in is wrong here) I drive this car at a much more leisurely pace.

When the car looks this good I don't mind giving people a chance to gawk at my car as I drive beside them.

In regards to OPs post, I do find the torque dip to be rather harsh, but as already mentioned I have started to learn how to drive this car in two separate "modes". Below 4k for around the town, and keeping it above 4500 for all freeway on-ramps and and quick zipping around.

While the dip is very noticeable, I do not think that it is so bad that the car should have not been released / is unacceptable.

Haha, I like to slowly pass people and then equal their pace if I see them hardcore looking, and then take off after ~15 seconds.

[Pscylo]

Saw numbers posted on here somewhere a month and a half or so ago....the dip can be removed with just a tune.

[ruskymx]

A tune from Lachute has minimized it and Perrin has shortened it. Visconti posted recently that he has a new version of his tune. We'll have to wait and see what he's go up his sleeve.

In the mean time, here's the proof of their (Lachute, Perrin, & Visconti) work

http://www.ft86club.com/forums/showp...&postcount=201

Could it be that the engineers put the dip in there on purpose? Multiple people have posted here about having two different driving styles for the car. Normal driving, shift before the dip and for racing, keep it above the dip. It's possible the dip is there for emissions, MPG, etc and the engineers thought that this would work fine.

How many 2.0L NA 4 bangers are at or near max tq at 3k rpm when they spin to 7400? I'm fairly new to this stuff so don't flame for not knowing the dyno charts/torque curves of all NA 4 bangers.

Ruskymx

[Nepenthe]

Originally Posted by ruskymx

Could it be that the engineers put the dip in there on purpose? Multiple people have posted here about having two different driving styles for the car. Normal driving, shift before the dip and for racing, keep it above the dip.

On purpose? It may have been seen as a very acceptable compromise and commensurate with the way a lot of people drive. It's kind of the way I drove my last car too, and my last few motorcycles. It's just a little more pronounced here and therefore crystallized or codified. The car is a sedate Corolla when you want it to be and a high revving lightweight RWD sporty coupe when you want it to be. And we each get to decide for ourselves how much of A or B we want each day. How great is that? :happy0180:

Originally Posted by ruskymx

How many 2.0L NA 4 bangers are at or near max tq at 3k rpm when they spin to 7400?

Well, the 2.0 liter from the 8th gen Si (stock), except for a brief spike right at the VTEC, had a torque peak in the 3K range that was mirrored again in the 6K range. For the Subaru, I'd say it would be more correct to say the stock torque curve is essentially flat from 2500 - 3300 and from 4600 - 6500.

[7thgear]

you guys should go drive a lotus elise, you'll think it's broken until you hit 6K

personally i think that the dip is exactly there for the emissions/fuel economy stuff

it's just that engineers never figured so many people would cry about it

[pr086]

i want more info on the redesigned intake, this is the biggest thing making me want to wait for the 2014 model.

[ruskymx]

I drove a 2ZZ Celica GTS and they were like a 1ZZ Corolla until you hit VVTL-i at high RPM, not sure what exactly the RPM that took place though. The FRS is much better for everyday driving than the GTS was. The GTS reminds me of my 98 YZ250 2 smoker the way the power is delivered.

Ruskymx

[Synack]

Originally Posted by 7thgear

you guys should go drive a lotus elise, you'll think it's broken until you hit 6K

personally i think that the dip is exactly there for the emissions/fuel economy stuff

it's just that engineers never figured so many people would cry about it

You're right, they wanted an all around well performing car. Great gas mileage while cruising at 2.5k and then great performance above 4.5k. The good thing is that you get to choose how you utilize fuel economy or power at any given time. We're also talking about a 2.0L 4 cyl motor here. This is no LS3 V8 in a Camaro making 400tq.

[atledreier]

I see it much more as a low-end torque boost than a midrange dip, to be honest. Maybe the Subaru engineers are so good to us we get spoilt?

[pr086]

at the lowest part of the dip how much torque is it making?