[135i]

So I decided to run my e92 coupe at the track tonight. I am running PROcede V5 w/ the December map. My car is 6MT and I'm running 265 Nitto Invo tires on 19x10 rear wheels. Everything else concerning my drivetrain was stock.

On most of my runs my 60 ft timewas 2.5+ sec and the wheel hop was baaaaad. It sounded horrible. I just couldn't get traction down whatsoever. What can be done to alleviate this? How are most people launching their 6MT? Traction control was fully off for all runs. 93 octane. Most of my runs were low 14s with mph ~104. My best run was my second run on the evening. The numbers are below:

60ft: 2.2
1/4 mile et: 13.34
1/4 mile mph: 106.99

I have no idea why this run was so much better than the other runs. Was PROcede changing the degree of aggressiveness of the tune between runs? What can I do to bring my times down? I feel a little disappointed that with an extra 70+ horsepower I am running times that are close to stock mag times. What are all you 11sec guys doing to get power to the ground.

I have a race slated with a buddy's Cayenne Turbo S (550hp) and my pops SL600 twin turbo in a couple weeks. No shot in hell with race gas? My ICarbon downpipes are being shipped out this week. TIA

[Dom the Bomb]

way to big of a rim to get traction get some 17's with radial then you will hook good.

[Brey335i]

For what it's worth, I ran a 12.9 with a street start (no launching) and the Procede V4. Your times should definitely be better...

That being said, I wouldn't worry too much. You're running a tune only so don't expect dramatic results. Also, 6MT is always hard to launch just right

[Blaizon]

Practice, practice and more practice. The more seat time you have in the car the better you'll get at the strip.

[135i]

Originally Posted by Brey335i

For what it's worth, I ran a 12.9 with a street start (no launching) and the Procede V4. Your times should definitely be better...

That being said, I wouldn't worry too much. You're running a tune only so don't expect dramatic results. Also, 6MT is always hard to launch just right

Did you run that time with just V4 or bolted on? I wonder what my car could run with a 1.8 60ft? High 12's at 110mph?

[tmo24]

Originally Posted by Dom the Bomb

way to big of a rim to get traction get some 17's with radial then you will hook good.

I disagree. I can launch great with my 19's and 6MT. But its tricky. I will agree that 17's with meatier tires will help, but I can't comfortably tell the OP that the 19's are his only issue. Its tires and technique.

OP- Do you have good tread left on your tires? Also, Are you revving high and just dumping the clutch? Your description sounds like this could have been your technique. Try playing around with revving up to 3-4k and letting the clutch out a little slower, but not too slow/not too fast. You will have to mess with your timing to get it right.

[135i]

Originally Posted by tmo24

I disagree. I can launch great with my 19's and 6MT. But its tricky. I will agree that 17's with meatier tires will help, but I can't comfortably tell the OP that the 19's are his only issue. Its tires and technique.

OP- Do you have good tread left on your tires? Also, Are you revving high and just dumping the clutch? Your description sounds like this could have been your technique. Try playing around with revving up to 3-4k and letting the clutch out a little slower, but not too slow/not too fast. You will have to mess with your timing to get it right.

I tried feathering the clutch at around 3k RPM and then gassed it. Halfway though first I would loose traction and get wheel hop. It's definitely a matter of my technique. What RPM do you typically shift at?

[tmo24]

Originally Posted by 135i

I tried feathering the clutch at around 3k RPM and then gassed it. Halfway though first I would loose traction and get wheel hop. It's definitely a matter of my technique. What RPM do you typically shift at?

I shift around 6k. With my old tires and no tune, I would go sideways in 2nd. Now with my tune and new tires, I stick very well. So, what happens if you go into 1st slowly, then gas it? Do you still lose traction? What I'm getting at is: are you losing traction because you are launching too hard, or because your car has too much power and your tires are lacking grip? Doesn't the proceed have the ability to limit boost so you don't lose traction in 1st? Or did I read that somewhere incorrectly?

[quattrosaint]

Originally Posted by 135i

I tried feathering the clutch at around 3k RPM and then gassed it. Halfway though first I would loose traction and get wheel hop. It's definitely a matter of my technique. What RPM do you typically shift at?

I could not get traction with a stock car above a 1200 RPM launch. Feather the clutch at a much lower RPM and feel what the tires are doing. I have heard with a tune that a 2nd gear launch is the way to go. Maybe someone can chime in about that. My V5 should be here Friday but I wont have time to put it in for a few weeks and would love to see what I run after that.

[mithiral67]

Originally Posted by quattrosaint

I have heard with a tune that a 2nd gear launch is the way to go.

I dont know, I like my clutch more than a fast track time.

[135i]

Originally Posted by tmo24

I shift around 6k. With my old tires and no tune, I would go sideways in 2nd. Now with my tune and new tires, I stick very well. So, what happens if you go into 1st slowly, then gas it? Do you still lose traction? What I'm getting at is: are you losing traction because you are launching too hard, or because your car has too much power and your tires are lacking grip? Doesn't the proceed have the ability to limit boost so you don't lose traction in 1st? Or did I read that somewhere incorrectly?

I believe it's from my tires lacking grip. I didn't really burnout before my runs. I shifted at higher than 6000 rpm too. There is a traction control feature but I haven't played around with it yet. I wanted to get a baseline tonight.

So what I'm taking from this is perhaps launch in second and shift at 6000 rpm for the next go around?

[GeorgiaTech335coupe]

Wheel hop = very bad. Make sure to get off the gas if you start wheel hopping, unless you want to break something.

I've got my best 60' in my MT, by holding rpm around 3-3.5k and barely letting the clutch out until I felt the tires grab then letting it out about half way until around 5.5k then clutch fully engaged (pulled a 1.89 60' on RFTs on stock 18s with tune+DCI doing this). It really takes a lot of practice though.

2nd gear launch is typically done for the Autos, but you'll never get your best times that way.

If you are pulling 2.5s then I'd be willing to bet that you are staying on the throttle too much while you are spinning. I can recover from blowing my tires off the line and still do better than a 2.5, but then again I have 100s of passes in this car. If you feel/hear the tires spinning get off the throttle and recover, then get back into it.

[GeorgiaTech335coupe]

Also, avoid the water box unless you are on drag radials or cheater slicks. Only do a quick burnout to clean your tires, none of that obnoxious shit that you see the motorcycles do. First gear you want to shift at redline, all other gears around 6500.

[135i]

Originally Posted by GeorgiaTech335coupe

Also, avoid the water box unless you are on drag radials or cheater slicks. Only do a quick burnout to clean your tires, none of that obnoxious shit that you see the motorcycles do. First gear you want to shift at redline, all other gears around 6500.

I went around the water box and would do a little burnout and line up.

Even launching lightly and then hammering it I would loose traction and have to let off. It was frustrating.

[Dom the Bomb]

Originally Posted by tmo24

I disagree. I can launch great with my 19's and 6MT. But its tricky. I will agree that 17's with meatier tires will help, but I can't comfortably tell the OP that the 19's are his only issue. Its tires and technique.

OP- Do you have good tread left on your tires? Also, Are you revving high and just dumping the clutch? Your description sounds like this could have been your technique. Try playing around with revving up to 3-4k and letting the clutch out a little slower, but not too slow/not too fast. You will have to mess with your timing to get it right.

im just saying if you want the best time radial is the way to go. high 12's. with his set up.

[tmo24]

Originally Posted by 135i

I went around the water box and would do a little burnout and line up.

Even launching lightly and then hammering it I would loose traction and have to let off. It was frustrating.

This is telling me its not so much in how you are launching then. More in the tires. I'm curious to know about the traction control in the tune.

[135i]

Originally Posted by tmo24

This is telling me its not so much in how you are launching then. More in the tires. I'm curious to know about the traction control in the tune.

I wasn't running the the piggy traction control at the time. I just would of thought my tires would of been better at hooking up. Bad tires? They have about 7k miles...

[tmo24]

Originally Posted by 135i

I wasn't running the the piggy traction control at the time. I just would of thought my tires would of been better at hooking up. Bad tires? They have about 7k miles...

Hopefully you bought them at discount tire and have warranties on them. I heard you may have gotten a nail in your sidewall the other day

[Brey335i]

Originally Posted by 135i

Did you run that time with just V4 or bolted on? I wonder what my car could run with a 1.8 60ft? High 12's at 110mph?

I ran it with V4, leaking downpipes (missing a clamp at the time), and a small boost leak from my charge pipe connection. haha

12.9 @ 111. Grandma start. Map 1.



/ thread jacking

[themyst]

A properly driven car will run maybe 13.0@109-110 6MT tune only, pump gas on street tires. This is a difficult car to launch on street tires; go easy on the launch, say a 1500-1800 RPM launch on street tires and don't aggressively mash off the line, go 50%, easing in when you feel the rear end hooking. Put it in DTC mode as your training wheels to learn your limits. You could also short shift into 2nd gear and go WOT, conditions and traction permitting.

If all else fails, get some drag radials and let 'er rip!

[135i]

Originally Posted by tmo24

Hopefully you bought them at discount tire and have warranties on them. I heard you may have gotten a nail in your sidewall the other day

I did get them from discount haha. Im going to roll up tomorrow with a nail in each sidewall of my rears

[135i]

Originally Posted by themyst

A properly driven car will run maybe 13.0@109-110 6MT tune only, pump gas on street tires. This is a difficult car to launch on street tires; go easy on the launch, say a 1500-1800 RPM launch on street tires and don't aggressively mash off the line, go 50%, easing in when you feel the rear end hooking. Put it in DTC mode as your training wheels to learn your limits. You could also short shift into 2nd gear and go WOT, conditions and traction permitting.

If all else fails, get some drag radials and let 'er rip!

Noted. Thank you for the good advice I will try it out next time.