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Old 01-25-2008, 09:31 PM   #26
tux121
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Member#: 162942
Join Date: Oct 2007
Location: MN
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2006 STi Black&Gold
Stage 2

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Problem. My best 0-60ft time = 1.889 All day at the track. I just am really bad at launching and needed some artificial help
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Old 01-25-2008, 09:53 PM   #27
Benchmark Tuning
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06 STi, 847-960-8676

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Quote:
Originally Posted by tux121 View Post
Problem. My best 0-60ft time = 1.889 All day at the track. I just am really bad at launching and needed some artificial help
well, as far as open source tuning I don't offer launch control. However I can offer driving (drag racing) schools

1.6x-1.72 : 60' with an '07 WRX on stock RE92s and stock suspension
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Old 01-26-2008, 12:40 AM   #28
gabedude
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Here is the trick to launching / shifting and not using launch control:

First setup your map (if you have DBW) to not cut boost or throttle completely at redline (I use 50% throttle cut for safety) (make sure you have plenty of fueling headroom as well). You have to adjust several paramters in the ETC tables to do this. Next, Make your 80% DC in the low RPMs very high. So now you should be able to mash the throttle at idle and it will rise to 6-9 PSI. This is the trick. At staging let it idle. When the countdown begins, floor the gas, dump it when it builds boost around 5k or so. You will rip off the line, wheel hop, or spin the first time you try it. If you wheel hop, let off, run over. If you spin, modulate the throttle so the tires catch (you can still get a 1.7x spinning). Powershift to 2nd gear is the most important shift. Be preapered for when you get it just right and rip that 1.6x 60 ft because 2nd comes very fast. Powershift all the way down the track, the ECU will cut to 50% throttle at redline and you won't get knock or lose much boost compared to lift shifting.

Gabe
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Old 01-26-2008, 01:51 AM   #29
mickeyd2005
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ABP

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Quote:
Originally Posted by gabedude View Post
Here is the trick to launching / shifting and not using launch control:

First setup your map (if you have DBW) to not cut boost or throttle completely at redline (I use 50% throttle cut for safety) (make sure you have plenty of fueling headroom as well). You have to adjust several paramters in the ETC tables to do this. Next, Make your 80% DC in the low RPMs very high. So now you should be able to mash the throttle at idle and it will rise to 6-9 PSI. This is the trick. At staging let it idle. When the countdown begins, floor the gas, dump it when it builds boost around 5k or so. You will rip off the line, wheel hop, or spin the first time you try it. If you wheel hop, let off, run over. If you spin, modulate the throttle so the tires catch (you can still get a 1.7x spinning). Powershift to 2nd gear is the most important shift. Be preapered for when you get it just right and rip that 1.6x 60 ft because 2nd comes very fast. Powershift all the way down the track, the ECU will cut to 50% throttle at redline and you won't get knock or lose much boost compared to lift shifting.

Gabe
Worth saving.

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Old 01-26-2008, 02:49 AM   #30
j87w
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aspen white

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Which table are you changing? The target throttle plate position or the requested torque(accelerator pedal). I would take it your just changing the target throttle position to 50 in the rpm ranges where you want ffs. What do you do about the launch control? How are you changing the tables there in order to keep it at the certain RPM?


Quote:
Originally Posted by gabedude View Post
Here is the trick to launching / shifting and not using launch control:

First setup your map (if you have DBW) to not cut boost or throttle completely at redline (I use 50% throttle cut for safety) (make sure you have plenty of fueling headroom as well). You have to adjust several paramters in the ETC tables to do this. Next, Make your 80% DC in the low RPMs very high. So now you should be able to mash the throttle at idle and it will rise to 6-9 PSI. This is the trick. At staging let it idle. When the countdown begins, floor the gas, dump it when it builds boost around 5k or so. You will rip off the line, wheel hop, or spin the first time you try it. If you wheel hop, let off, run over. If you spin, modulate the throttle so the tires catch (you can still get a 1.7x spinning). Powershift to 2nd gear is the most important shift. Be preapered for when you get it just right and rip that 1.6x 60 ft because 2nd comes very fast. Powershift all the way down the track, the ECU will cut to 50% throttle at redline and you won't get knock or lose much boost compared to lift shifting.

Gabe
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Old 01-26-2008, 03:05 AM   #31
Benchmark Tuning
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Quote:
Originally Posted by j87w View Post
Which table are you changing? The target throttle plate position or the requested torque(accelerator pedal). I would take it your just changing the target throttle position to 50 in the rpm ranges where you want ffs. What do you do about the launch control? How are you changing the tables there in order to keep it at the certain RPM?
the way he is talking about launching is not a form of launch control it is merely the way he launches the car, no special settings in the ECU for launch control. Launch control in this case is YOUR FOOT its a little more involved than just nailing the gas and dumping the clutch, as there are a few tricks to doing it. There are many different methods.

Here you can see the one I use....very minimal wheel spin as you take off

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Old 01-26-2008, 08:56 AM   #32
gabedude
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Quote:
Originally Posted by j87w View Post
Which table are you changing? The target throttle plate position or the requested torque(accelerator pedal). I would take it your just changing the target throttle position to 50 in the rpm ranges where you want ffs. What do you do about the launch control? How are you changing the tables there in order to keep it at the certain RPM?
Just go look at my free stage 1 07 STI map on osecuroms.org.

Gabe
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Old 01-26-2008, 08:59 AM   #33
gabedude
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1874 Bicycle

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Quote:
Originally Posted by 555 Motorsports View Post
the way he is talking about launching is not a form of launch control it is merely the way he launches the car, no special settings in the ECU for launch control. Launch control in this case is YOUR FOOT its a little more involved than just nailing the gas and dumping the clutch, as there are a few tricks to doing it. There are many different methods.

Here you can see the one I use....very minimal wheel spin as you take off

Launch control just allows you to concentrate on modulating the throttle. They key is building boost when stationary. You can build boost w/o LC is my point.

As far as FFS goes, you don't need it if you can control the ETC settings (DBW ECUs). You can set it up so it powershifts w/o knock.

Gabe

06 WRX (On my free Stage 1 map when in dev):
http://www.youtube.com/watch?v=ZyLGAeAMqe0

07 STI (only ran it once so far, this was on one of my dev Stage 1 maps)
http://www.youtube.com/watch?v=m4mIk6koXHo

Last edited by gabedude; 01-26-2008 at 09:09 AM.
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Old 09-13-2017, 12:53 PM   #34
averyg9
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Java Black Pearl

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The Cobb APv3 isnt too bad for LC. It will build boost up, but I haven't launched about 3500 because clutches aren't cheap lul
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