JB4/Dinan/Others Really? Why?

[dhoggm3]

OK I guess I'm getting jaded or something, but the single biggest challenge to driving the F8X fast is keeping the rears on the ground. In 3rd gear.

Why, then, do I see folks running to add torque to this beast of a motor? Maybe it's just habit - it's what we gearheads always do. More power!! I know it's sacreligious to suggest that, just maybe, the F8X has enough. I've never said that before, in 30+ years of messing with high-performance cars, but we just may have reached the summit, straight from the factory. Just maybe.

[TheRealOrosie]

Originally Posted by dhoggm3

OK I guess I'm getting jaded or something, but the single biggest challenge to driving the F8X fast is keeping the rears on the ground. In 3rd gear.

Why, then, do I see folks running to add torque to this beast of a motor? Maybe it's just habit - it's what we gearheads always do. More power!! I know it's sacreligious to suggest that, just maybe, the F8X has enough. I've never said that before, in 30+ years of messing with high-performance cars, but we just may have reached the summit, straight from the factory. Just maybe.

Feeling the extra pull from my F80 in 4th gear on the freeway justifies my decision, while putting an even bigger smile on my face.

[dhoggm3]

Originally Posted by P-TownM3

Feeling the extra pull from my F80 in 4th gear on the freeway justifies my decision, while putting an even bigger smile on my face.

OK I could relate to that.

[Maddict3]

There is never enough power lol.

I have a JB on my car and I love it, really brings the car alive.

[chiplee]

Street traction also isn't the only measure at play here. Race tires, drag radials, track conditions, etc, all make it possible to put more power to the ground. If you don't intend to do that then I pretty much agree that these mods are just for "even more" passing authority on the highway.

[JoeyBananas]

L

Originally Posted by dhoggm3

OK I guess I'm getting jaded or something, but the single biggest challenge to driving the F8X fast is keeping the rears on the ground. In 3rd gear.

Why, then, do I see folks running to add torque to this beast of a motor? Maybe it's just habit - it's what we gearheads always do. More power!! I know it's sacreligious to suggest that, just maybe, the F8X has enough. I've never said that before, in 30+ years of messing with high-performance cars, but we just may have reached the summit, straight from the factory. Just maybe.

You need better tires

It's an ADDICTION.

When I started Modifying my S2000, all I wanted was "300RWHP" and to run 12s.........well, that turned Into a 700HP 9 second stripped/race prepped drag car.

I would trap nearly 150MPH in the 1/4. That equates to beating a GTR by a bus length or two on the highway.

Like I said, it's an addiction and a costly one

[minus9]

I had a 335/N54 prior to the F80, and that had JB4 and intake.

I am planning on waiting for some time before doing any mods. I agree that the car is fantastic stock. Eventually the temptation will come to get some more power and make it into a whole new car.

[Dalko43]

I wonder how many people who add these kinds of mods to brand new M3/M4's actually track their cars?

[dhoggm3]

Originally Posted by Dalko43

I wonder how many people who add these kinds of mods to brand new M3/M4's actually track their cars?

Very few probably. Never actually thought about this before.

[FC4]

Originally Posted by Dalko43

I wonder how many people who add these kinds of mods to brand new M3/M4's actually track their cars?

And if that figure is 0, what exactly would be your point?

[Black Gold]

Originally Posted by Dalko43

I wonder how many people who add these kinds of mods to brand new M3/M4's actually track their cars?

These mods at their current form (imo not refined yet and not enough data log info) would likely make the car worse at the track

Imo the power level and throttle response on track is awesome in stock form. No desire to change it personally, and I'm one who likes power.

[///M ARMY]

Originally Posted by Dalko43

I wonder how many people who add these kinds of mods to brand new M3/M4's actually track their cars?

living in so cal makes it very easy to track our cars. Track events at least 3-4 times a month. Been to the track 4 times already but haven't dialed the car in yet.

[biggie27]

Originally Posted by Dalko43

I wonder how many people who add these kinds of mods to brand new M3/M4's actually track their cars?

why would tracking your car have anything to do with if its modded or not, you have to remember the JB4 has 7 settings so far and if you want it to be stock for the track you can turn it off, if you want maximum power for a dyno pull you can also do that, if you want something in between for a great drag setup it will let you do that too.

[rubber_ducky]

Personally, i think that the car has more than enough power from the factory. Especially for public road use. Any additional power only makes the already difficult task of actually driving the car hard even more difficult.

Just my 2 cents

[shortseller]

Originally Posted by rubber_ducky

Personally, i think that the car has more than enough power from the factory. Especially for public road use. Any additional power only makes the already difficult task of actually driving the car hard even more difficult.

Just my 2 cents

Agreed. As we can see from what tuners are producing so far(yes it's early but...) they are not adding tons more to hp/tq and what they are adding is costing more than usual. Pretty sure this car comes close to max right out of the factory, and with a possible comp pkg coming for fine tuning there is not good reason to look elsewhere, IMO.

[Black Gold]

Originally Posted by shortseller

Agreed. As we can see from what tuners are producing so far(yes it's early but...) they are not adding tons more to hp/tq and what they are adding is costing more than usual. Pretty sure this car comes close to max right out of the factory, and with a possible comp pkg coming for fine tuning there is not good reason to look elsewhere, IMO.

def isn't maxed from factory. 3 different tunes now have shown you can add about 40-50 whp while still maintaining the stock power curve. above that, the gains are all in the midrange.

I do agree that BMW will offer a PPK at some point in the next couple years, and honestly ill probably get it when it goes on sale. little extra power never hurt anyone

I also agree that the options right now leave a little to be desired, much more to come IMO. its still really early in the game

[JoeFromPA]

I'll say that this is the first car I've driven where I've said "it has enough power" - meaning it can easily and constantly overwhelm the traction and chassis.

I spend ~5-6 months a year with temperatures down in the 40-50F range or lower and at those levels, there is simply more power than this RWD platform can consistently extract stock.

If I lived in a warm climate and was rocking a more track oriented tire/wheel setup, then I could see wanting more power.

But as is, this platform is traction limited anywhere in the snow belt for most of the year and even traction limited during the summer months, so I can't get behind it...

Now....that being said...

I wouldn't mind more power between 2000-4000 rpms and a more instant response, which is for daily driving, and that might be available via some exhaust modification and tuning.

[M5Rlz]

I've got 11k on the jb4 on the m4 its been fine.

Originally Posted by JoeFromPA

I'll say that this is the first car I've driven where I've said "it has enough power" - meaning it can easily and constantly overwhelm the traction and chassis.
.

Thats not due to the power its due to the settings and mapping being too aggressive for the tire/chassis profile.

[Deviant]

Originally Posted by ///M ARMY

living in so cal makes it very easy to track our cars. Track events at least 3-4 times a month. Been to the track 4 times already but haven't dialed the car in yet.

And I'm sure everything you've done to your car (wheels/tires, springs, exhaust, JB4, Brembos) have done nothing but make it worse on the track. /sarcasm font

[Ross61]

You'll never hear the alpha say "nah, that's enough power."

[Mike@N54Tuning.com]

Use the JB4 boost limiting option to keep boost stock in 1st gear, a little stronger than stock in 2nd gear, and full power in 3rd gear+ when you're already moving. Having the huge midrange torque at the tip if your foot is simply awesome. Don't knock it until you've tried it.

Mike

[dhoggm3]

That's a nice touch in a tuning kit. But heck, the thing can't keep from spinning the rears in 2nd no matter what rpm if you floor it in 2nd. And tonight I completely broke it sideways in 3rd coming home from work (unrestrained aggression). Maybe if that extra power kicked in in 4th, I could subscribe to it.