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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Improving Launch - Two Step & No Lift Shift - WOT box...



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      04-20-2011, 02:07 AM   #1
dzenno
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Improving Launch - Two Step & No Lift Shift - WOT box...

What do you guys think? Would this work for us 6MTs? Does Procede already do this in our case?

http://www.modernperformance.com/n2m...lt-p-2192.html

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What is the WOT Box?

The WOT Box is an electronic device that makes WOT shifting easy by reducing your engine's power for a very short timed period while you shift. It allows the synchros in your transmission to mesh easily, reducing the chance of missing a gear and damaging your transmission. If the input shaft on a manual transmission is not allowed to slow down enough it will lock you out of gear time after time. We have developed a solution to the problem by controlling the ignition at the shift point to ease the transition from one gear to another.
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      04-20-2011, 02:33 AM   #2
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I think it can definitely be done with a CPS module and a CAN connection. Probably Procede could do this immediately, while JB4 could do it when they release the CPS module for the public.

But one question is, is this box effective for well balanced cars like the 335i/135i with no turbo lag, etc. ?
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      04-20-2011, 02:35 AM   #3
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Quote:
Originally Posted by tscdennab View Post
I think it can definitely be done with a CPS module and a CAN connection. Probably Procede could do this immediately, while JB4 could do it when they release the CPS module for the public.

But one question is, is this box effective for well balanced cars like the 335i/135i with no turbo lag, etc. ?
Mostly I'm interested in its launch improvement capability...procede already does a pretty good job keeping boost between shifts on 6ATs, but 6MT really lacks in launch control and boost between shifts..
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      04-20-2011, 07:18 AM   #4
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This thing is a pita to wire in if you have a piggyback as it taps some of the same wires. I had one on my last car and I believe it was throttle/crankposition in and out/power/ground/and something else. You should confront shiv to see if it will mess with the procede. Also call the wot box manufacture to see if its even possible. Usually the guys who beta tests it, gets it for free.
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      04-20-2011, 09:55 AM   #5
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I want to see someone put a sequential shifter on our cars (that would def help the 6MT guys out). They are so sick, but $$$.
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      04-20-2011, 10:11 AM   #6
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Doesn't work, already looked into this two years ago.
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      04-20-2011, 10:19 AM   #7
dzenno
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Originally Posted by themyst View Post
Doesn't work, already looked into this two years ago.
What was the reason that it didn't work?
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      04-20-2011, 10:39 AM   #8
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I wish. I think the two step can be done but its abusive to the turbo's so it likely wont be an option.

The WOT box I dont think can be done something related to pulling ignition at the shift? IDK

I hope I'm wrong in all aspects though.
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      04-20-2011, 11:12 AM   #9
dzenno
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Why would it be abusive to the turbos? Not like we're doing anything to/with them that we shouldn't...if you're along the lines of being under boost longer as you're not loosing it between shifts I wouldn't consider that abusive at all, that's what we need

In the end, what type of racing isn't abusive
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      04-20-2011, 11:17 AM   #10
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Quote:
Originally Posted by dzenno View Post
Why would it be abusive to the turbos? Not like we're doing anything to/with them that we shouldn't...if you're along the lines of being under boost longer as you're not loosing it between shifts I wouldn't consider that abusive at all, that's what we need

In the end, what type of racing isn't abusive
Sorry I mean anti-lag. Im assuming with 2 step you just mean a pre mature rev limiter? If so that wont be as abusive.

IF it were anti lag it would require a reduction in ignition and a bunch of fuel that basically spins the turbines. Which is abusive over long term. In turn causing premature wear to the turbo's.
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      04-20-2011, 11:31 AM   #11
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Keep in mind though this is only happening under WOT...

Also look at what every single 6AT car does to launch, brake boost off the line..Everything is abusive to cars to a degree this would definitely not be at the same level as slipping a clutch constantly or actual no lift shifts say
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      04-20-2011, 11:35 AM   #12
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You need to read up on how the wotbox works. Your comparison below is not even close.
Quote:
Originally Posted by dzenno View Post
Keep in mind though this is only happening under WOT...

Also look at what every single 6AT car does to launch, brake boost off the line..Everything is abusive to cars to a degree this would definitely not be at the same level as slipping a clutch constantly or actual no lift shifts say
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      04-20-2011, 11:40 AM   #13
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Quote:
Originally Posted by dzenno View Post
Keep in mind though this is only happening under WOT...

Also look at what every single 6AT car does to launch, brake boost off the line..Everything is abusive to cars to a degree this would definitely not be at the same level as slipping a clutch constantly or actual no lift shifts say
What a WOT Box does is drops a ton of timing out of the car and you set a rev limit. When bouncing off that rev limit and cutting all the timing out you create load and boost which builds for your launch. It isn't "great" for the turbos but it isn't great for the engine either. You are sitting stationary and creating immense heat. Now - it has its benefits as well. With our cars (6mt) you can get instaboost off the line as it is really. With a good set of very sticky slicks some boost would be good BUT with how small our turbos are I would guess that any true anti lag utilizing ignition reduction etc. would create a rather large amount of boost as i could fart on the turbine and create a few psi.

Cobb is known for including 2steps and ffs with their setups. I would guess they would be a good source to request it.
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      04-20-2011, 11:41 AM   #14
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Quote:
Originally Posted by Clap135 View Post
You need to read up on how the wotbox works. Your comparison below is not even close.
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Lol What did I miss? It cuts ignition between shifts and plays with the throttle blade, no?
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      04-20-2011, 11:42 AM   #15
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Quote:
Originally Posted by dzenno View Post
Keep in mind though this is only happening under WOT...

Also look at what every single 6AT car does to launch, brake boost off the line..Everything is abusive to cars to a degree this would definitely not be at the same level as slipping a clutch constantly or actual no lift shifts say
I'm confused..

2 step and anti lag are for launching....

what is your definition of 2 step and what is your definition of anti lag.

I think that is where we are getting confused. Atleast I'am.

In regards to WOT BOX, I dont think it can be done on this car. Something about reducing timing enough before the shift just cant be done correctly.

Me clap and themyst as well as who knows else looked into the WOT box years ago.

Maybe technology and know-how has changed since then.

I would hope so....
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      04-20-2011, 11:50 AM   #16
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Quote:
Originally Posted by dzenno View Post
Lol What did I miss? It cuts ignition between shifts and plays with the throttle blade, no?
You are looking into what it does vs the effects of doing it. By cutting ignition you implement a ignition based rev limiter however thats not how this cars rev limiter works. You ever see street bikes bouncing off the limiter and within 10 seconds manifold start glowing? By groping ignition your are increasing egts and adding fuel...by doing this the turbos are spoiled by pure heat and gasoline explosions. Same thing happens during a shift with this box meaning you are not making power through the shift like an auto however you are maintaining boost untjll u drop the clutch. Like I said contact Shiv first cause you will need to figure out if u install it pre or post procede. I used this on my last car while running a piggy and its a little more involved than u think.

Another thing is that if this works with the procede logic Shiv will have to make custom maps or else you will knock at the beginning of each gear post shift.
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      04-20-2011, 11:56 AM   #17
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i literally work 1.5 miles from Modern Performance - i've know Cory and most of his employees for about 6 years.

i've been to 4 or 5 of the massive SRT4 Meets that he throws every year because i had an SRT4 for over 3 years.

the SRT4's capability to WOT Shift on Stage 1 is one of the best features in those cars, especially from 40-150. it's also a bad thing though if you plan to run from a dig.

imagine having 320ftlbs to the front wheels and WOT shifting from 1st to 2nd while holding @ 15psi, HAHA !!!!

you pretty much spin to redline in 2nd before having to go into 3rd, BUT, with some nice DR's or slicks, the WOT shifting is a blessing. 1.6 60ft's without even trying.

my STi is on the bottom left corner






















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      04-20-2011, 11:58 AM   #18
dzenno
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So the fact that procede's launch control on 6ATs retards ignition on a press of a button instead of doing gear based boost reduction says that its bad as well? This is for launch...between shifts not sure how procede works on 6AT vs 6MT...I only know that 6ATs hold that boost a lot better in between shifts..
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      04-20-2011, 12:02 PM   #19
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Quote:
Originally Posted by Clap135 View Post
This thing is a pita to wire in if you have a piggyback as it taps some of the same wires.
i just confirmed with Cory that the N2MB WOT Box hardwires into the actual OBII Port.

he's never seen the WOT Box hardwired into any ECU for any vehicle....
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      04-20-2011, 12:04 PM   #20
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Quote:
Originally Posted by dzenno View Post
So the fact that procede's launch control on 6ATs retards ignition on a press of a button instead of doing gear based boost reduction says that its bad as well? This is for launch...between shifts not sure how procede works on 6AT vs 6MT...I only know that 6ATs hold that boost a lot better in between shifts..
Shiv groping a few degrees during brake boosting is nowhere near what the wot box does. Picture pretty much turning off every other coil while keeping air and fuel the same.
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      04-20-2011, 12:05 PM   #21
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Quote:
Originally Posted by Litos View Post
i just confirmed with Cory that the N2MB WOT Box hardwires into the actual OBII Port.

he's never seen the WOT Box hardwired into any ECU for any vehicle....
Well be is dead wrong then as I was one of the first to run it on the ms3. It sliced directly into the wiring harness coming out of the ecu
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      04-20-2011, 12:06 PM   #22
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