What BHP for a sub 11.5 second quarter mile?

Fallenangel123 · 08-22-2019, 05:09 PM

On a full street setup, street tyres, etc. What sort of power levels are needed for an 11.5s or less 1/4 mile? I have read around old threads, and people seemed to suggest around 600bhp would do the trick.

Does this seem accurate, or optimistic?

Aceway · 08-22-2019, 06:16 PM

Auto or manual? Think you'll need at least 700 for manual from what I've seen.

Fallenangel123 · 08-23-2019, 04:38 AM

Quote:

Originally Posted by Aceway

Auto or manual? Think you'll need at least 700 for manual from what I've seen.

DCT

tisdrew · 08-23-2019, 10:30 AM

It'll come down to launch and those street tires are going to hurt ya. suspenceful did a 10 second pass with 750 on a manual so I'd say you can do 11.49 with 500-600 depending on your launch. A LSD will help but you'll have tough luck attempting any off-the-line boost or engine momentum with your fancy automatic. Are you JB4?

type-dRew · 08-23-2019, 10:30 AM

450 to the wheels and a real tire should be just enough in good air

Silent9n54 · 08-23-2019, 12:47 PM

Quote:

Originally Posted by Fallenangel123

On a full street setup, street tyres, etc. What sort of power levels are needed for an 11.5s or less 1/4 mile? I have read around old threads, and people seemed to suggest around 600bhp would do the trick.

Does this seem accurate, or optimistic?

i hit 11.5 and i doubt im at 500whp... maybe 470ish

2007 E92 335i / VRSF 5" FMIC-Charge Pipe-DCI-Inlets/ TurboSmart Plumb Back DV / XHP / E50 Custom Tune by WedgePerformance / APEX ARC8 / MT ET Street / 11.5 @ 119 / Instagram @silent11n54

NoGuru · 08-23-2019, 01:05 PM

Problem with the DCT is getting it to launch without roasting the wheels off. I know, I have been trying. I just flashed the 135 DCT to it so the launch should be at 3K now. But I have just been mashing the pedal and letting the trans do the work. Gotta know your Optimal shift points as well. I'm just about 500whp and mine stack like this,
1st 6400
2nd 5770
3rd 5300
4th 4850
5th 4700

LMB335IS · 08-25-2019, 12:22 PM

450-500whp is plenty to hit a 11.5 pass. It's all about the 60 ft at that point. I did 11.8's on street tires, no launch control, just soft pedaling it off the line, and with 2.1-2.2 60 ft times. Trim .3-.4 sec off of that and you're easily in the lower 11's.

mweisdorfer · 08-25-2019, 05:50 PM

Quote:

Originally Posted by tisdrew

It'll come down to launch and those street tires are going to hurt ya. suspenceful did a 10 second pass with 750 on a manual so I'd say you can do 11.49 with 500-600 depending on your launch. A LSD will help but you'll have tough luck attempting any off-the-line boost or engine momentum with your fancy automatic. Are you JB4?

Isn't a DCT faster than a manual?

mweisdorfer · 08-25-2019, 05:54 PM

I'm no expert admit-tingly, but from what I have read, you'd need around 500 plus HP; a DCT & an LSD make it a lot easier to attain.

NoGuru · 08-26-2019, 07:08 AM

Quote:

Originally Posted by mweisdorfer

I'm no expert admit-tingly, but from what I have read, you'd need around 500 plus HP; a DCT & an LSD make it a lot easier to attain.

No, a DCT will hurt you in the 1/4 unless you have variable launch like an M car has. It's just not meant for a controlled wheel spin launch.
If you get a good launch which is very hard to do, then it might help you but getting the launch is hard to do.

mweisdorfer · 08-26-2019, 01:59 PM

Quote:

Originally Posted by NoGuru

Quote:

Originally Posted by mweisdorfer

I'm no expert admit-tingly, but from what I have read, you'd need around 500 plus HP; a DCT & an LSD make it a lot easier to attain.

No, a DCT will hurt you in the 1/4 unless you have variable launch like an M car has. It's just not meant for a controlled wheel spin launch.
If you get a good launch which is very hard to do, then it might help you but getting the launch is hard to do.

When you say variable launch doesn't the 335is have that ?

NoGuru · 08-26-2019, 02:56 PM

Quote:

Originally Posted by mweisdorfer

When you say variable launch doesn't the 335is have that ?

No, only the M's do. The 335 kicks in at 5K and the 135 kicks in at 3K.

mweisdorfer · 08-26-2019, 06:41 PM

Quote:

Originally Posted by NoGuru

Quote:

Originally Posted by mweisdorfer

When you say variable launch doesn't the 335is have that ?

No, only the M's do. The 335 kicks in at 5K and the 135 kicks in at 3K.

Can't you play with the trans settings when you have the xHp flash??

type-dRew · 08-27-2019, 08:03 AM

Quote:

Originally Posted by mweisdorfer

Can't you play with the trans settings when you have the xHp flash??

There isn't an xhp flash for DCT.

mweisdorfer · 08-27-2019, 08:07 AM

Quote:

Originally Posted by type-dRew

Quote:

Originally Posted by mweisdorfer

Can't you play with the trans settings when you have the xHp flash??

There isn't an xhp flash for DCT.

Yes, but if you had an automatic, you could play with the settings a little to overcome some of what was discussed. No?

LMB335IS · 08-27-2019, 07:41 PM

Quote:

Originally Posted by mweisdorfer

Yes, but if you had an automatic, you could play with the settings a little to overcome some of what was discussed. No?

xHP has a form of LC for the Steptronic which I think is a highly evolved form of brake boosting. That's not possible with a DCT. It's a great way to smoke a $2000 clutch pack. It's apples to oranges to compare the two. They're two different operating systems.

mweisdorfer · 08-27-2019, 07:43 PM

Quote:

Originally Posted by LMB335IS

Quote:

Originally Posted by mweisdorfer

Yes, but if you had an automatic, you could play with the settings a little to overcome some of what was discussed. No?

xHP has a form of LC for the Steptronic which I think is a highly evolved form of brake boosting. That's not possible with a DCT. It's a great way to smoke a $2000 clutch pack. It's apples to oranges to compare the two. They're two different operating systems.

That's what I thought i read about. I have stage 1 & 2.

Until I refurb my trans solenoids, I'm not gonna get stage 3.

LMB335IS · 08-27-2019, 07:48 PM

Quote:

Originally Posted by NoGuru

No, a DCT will hurt you in the 1/4 unless you have variable launch like an M car has. It's just not meant for a controlled wheel spin launch.
If you get a good launch which is very hard to do, then it might help you but getting the launch is hard to do.

I have adjustable LC on my 335is now, I'm just waiting for the temps to drop so I won't be wasting my time going to the strip. I dropped down to 18's and am running 265/40 Federal RS-RRs, not drag radials but better than the average street tire. M3 drivetrain with a custom 2.81 FD should get me out of the hole fairly quick if it hooks. I'll know in a couple months. I'd be ecstatic with a 1.8-1.9 60 ft.

NoGuru · 08-28-2019, 08:10 AM

Quote:

Originally Posted by LMB335IS

I have adjustable LC on my 335is now, I'm just waiting for the temps to drop so I won't be wasting my time going to the strip. I dropped down to 18's and am running 265/40 Federal RS-RRs, not drag radials but better than the average street tire. M3 drivetrain with a custom 2.81 FD should get me out of the hole fairly quick if it hooks. I'll know in a couple months. I'd be ecstatic with a 1.8-1.9 60 ft.

I know you have it but you put a shit ton of effort into making that happen.
Make sure and post your times when you run.
I'll be testing the 135 Launch control thanks to you for letting me know how to flash it.

LMB335IS · 08-28-2019, 09:41 AM

Quote:

Originally Posted by NoGuru

I know you have it but you put a shit ton of effort into making that happen.
Make sure and post your times when you run.
I'll be testing the 135 Launch control thanks to you for letting me know how to flash it.

Lol, shit ton about covers it. And $$$, although now it seems that those parts are even more expensive. I guess guys have been buying them up and driving the market up with it.

I've heard good things with the 135 flash. It's definitely a step in the right direction.

08-22-2019, 05:09 PM	#1
Fallenangel123 Private First Class 24 Rep 100 Posts Drives: Z4 35is DCT Join Date: Oct 2017 Location: UK iTrader: (0)	What BHP for a sub 11.5 second quarter mile? On a full street setup, street tyres, etc. What sort of power levels are needed for an 11.5s or less 1/4 mile? I have read around old threads, and people seemed to suggest around 600bhp would do the trick. Does this seem accurate, or optimistic?
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08-22-2019, 06:16 PM	#2
Aceway Captain 458 Rep 875 Posts Drives: E82 135i / F25 28i Join Date: Feb 2018 Location: SoCal iTrader: (2)	Auto or manual? Think you'll need at least 700 for manual from what I've seen.
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08-23-2019, 10:30 AM	#4
tisdrew First Lieutenant 98 Rep 300 Posts Drives: 2009 335i Join Date: Dec 2015 Location: Melbourne, FL iTrader: (0)	It'll come down to launch and those street tires are going to hurt ya. suspenceful did a 10 second pass with 750 on a manual so I'd say you can do 11.49 with 500-600 depending on your launch. A LSD will help but you'll have tough luck attempting any off-the-line boost or engine momentum with your fancy automatic. Are you JB4? __________________ "Wheels and exhaust aren't a build"
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08-23-2019, 10:30 AM	#5
type-dRew Major 642 Rep 1,245 Posts Drives: 2009 335i xDrive Join Date: Feb 2019 Location: Newport MI iTrader: (0)	450 to the wheels and a real tire should be just enough in good air __________________ 2009 335i xDrive AT / 177k+ miles PSP 750ic / Fuel-It! Stage 1 / BMS CP / Sutphin Tuning / RFP E50 11.61 @ 117.5 New setup; Covid 19Ts on RFP 93 + ARM inlets, dp, VTT cp and PSP outlets
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08-23-2019, 01:05 PM	#7
NoGuru Major 779 Rep 1,434 Posts Drives: 335is Join Date: Apr 2017 Location: MI iTrader: (0) Garage List 2021 Chevy Silverad ... [0.00] 2014 CTS [0.00] 2011 335is [0.00]	Problem with the DCT is getting it to launch without roasting the wheels off. I know, I have been trying. I just flashed the 135 DCT to it so the launch should be at 3K now. But I have just been mashing the pedal and letting the trans do the work. Gotta know your Optimal shift points as well. I'm just about 500whp and mine stack like this, 1st 6400 2nd 5770 3rd 5300 4th 4850 5th 4700 __________________ 2011 335is DCT BQ Tuning / BMS CAI / VRSF kittyless DP's / Synapse BOV and charge pipe / 7" VRSF Race FMIC / Walbro 535 and 450 on BMP4 / E90 tune / Diff Brace / PR Coils / Relocation Inlets / DAW Stage3+ Turbos / MMP port injection / xHP Stage 3 / FPR and -6 fuel lines
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08-25-2019, 12:22 PM	#8
LMB335IS Sua Sponte 1310 Rep 2,856 Posts Drives: 2013 LMB 335is Join Date: May 2008 Location: FOB FL iTrader: (21) Garage List 2013 BMW 335is [8.84]	450-500whp is plenty to hit a 11.5 pass. It's all about the 60 ft at that point. I did 11.8's on street tires, no launch control, just soft pedaling it off the line, and with 2.1-2.2 60 ft times. Trim .3-.4 sec off of that and you're easily in the lower 11's. __________________ 335is/DCT-M3 GTS software-M3 drivetrain-M3 GWS-KOMBI-DSC-SZL/MHD/BQ Tuning IG@ClustersandCoding
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08-25-2019, 05:54 PM	#10
mweisdorfer Major General 1934 Rep 6,965 Posts Drives: 2007 Black/Black 335i e90 Join Date: Apr 2011 Location: Holly, MI iTrader: (0) Garage List 2007 BMW E90 335i [0.00] 2008 bmw x5 [0.00]	I'm no expert admit-tingly, but from what I have read, you'd need around 500 plus HP; a DCT & an LSD make it a lot easier to attain.
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