01-27-2010
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#1
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Kevin
Join Date: Jan 2004
Location: Shoreview
Posts: 3,356
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Why Can't I Launch Well?
I don't know if this is the place for this but, please help me figure out why I can't launch my 1G AWD well.
With my last 1G AWD, like 250hp(lol) stock suspension, ACT2600 street, 225/45/17 KDWs. I'd rev up to like 6k rpm, and dump/slip the clutch. Spin 4 tires and haul.
Curent car: A LOT more power, DSMLink, Ksport coilovers, 225/45/17 KDWs, ACT2600 w/6puck. I hit the launch control, and then slip/dump clutch. and then No Lift To Shift. I think when I slip the clutch I'm taking my foot off the gas which is messing up the NLTS function. Make sense? So then I hit the NLTS rev limit in 1st gear. Its effed up. Oh and I can't spin my tires at all. Wtf? It just doesn't happen. I know that sounds ricery, but...
bets 60ft was 1.7 but I mostly have like 1.9s and 1.8s and 2.0s lol
I'm probably a shitty driver.
__________________
Misses the Mitsu Community
Currently on Corvette #4
Last edited by sleepydsm; 01-27-2010 at 12:41 AM..
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01-27-2010
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#2
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Unsure resident asshole
Join Date: Mar 2005
Location: MN
Drives: '92 Eagle TalonTSI w/many mods
Posts: 3,696
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Re: Why Can't I Launch Well?
What boost are you leaving at before vs. now?
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Black 1GB Mafia #1
744AWHP/526TQ-Shootout mode
639.6AWHP/452TQ-DB's dyno
I wanna go fast.
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01-27-2010
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#3
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immune from paybans
Join Date: Oct 2005
Location: West Des Moines
Drives: poorly
Posts: 4,358
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Re: Why Can't I Launch Well?
Aren't bigger turbos a lot harder to launch correctly? It could be you just have to relearn on this setup.
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01-27-2010
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#4
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is Nashty
Join Date: Oct 2007
Location: Stillwater
Drives: Cyborg from Japan
Posts: 2,080
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Re: Why Can't I Launch Well?
Yeah you just need some more practice. More power is a lot harder to handle when launching. Eventually you'll figure out the sweet spot.
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-1990 Mitsubishi Cyborg 4WD-
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01-27-2010
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#5
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Transmission destroyer
Join Date: Feb 2007
Location: Cambridge
Drives: G37, 91 TSi
Posts: 7,150
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Re: Why Can't I Launch Well?
I'm sure you had a lot more boost built up at launch before, and thus more torque when you dumped the clutch? Just practice a bunch of different things and you'll be good.
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Quote:
Originally Posted by scheides
I swing from the nuts of cold hard data. Anything less is a guess.
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01-27-2010
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#6
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formerly ecoli
Join Date: Oct 2003
Location: On the dyno
Posts: 4,892
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Re: Why Can't I Launch Well?
If you had a 14B or 16G before, then that might be why. It's way easier to launch a small turbo car.
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01-27-2010
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#7
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AWD4G64
Join Date: Jun 2004
Location: Shoreview, MN
Posts: 2,286
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Re: Why Can't I Launch Well?
He had a 20G on it before. And Ive been in the car on a launch and it was crazy. with his current set up it honestly feels like hes just pulling away from a stop sign. Somethings not right.
__________________
1998 Spyder AWD
567hp
490tq
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01-27-2010
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#8
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Tournaments Won: 3
Join Date: Oct 2003
Location: Maple Grove, MN
Drives: Lancer and Durango
Posts: 7,017
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Re: Why Can't I Launch Well?
Quote:
Originally Posted by sleepydsm
I don't know if this is the place for this but, please help me figure out why I can't launch my 1G AWD well.
With my last 1G AWD, like 250hp(lol) stock suspension, ACT2600 street, 225/45/17 KDWs. I'd rev up to like 6k rpm, and dump/slip the clutch. Spin 4 tires and haul.
Curent car: A LOT more power, DSMLink, Ksport coilovers, 225/45/17 KDWs, ACT2600 w/6puck. I hit the launch control, and then slip/dump clutch. and then No Lift To Shift. I think when I slip the clutch I'm taking my foot off the gas which is messing up the NLTS function. Make sense? So then I hit the NLTS rev limit in 1st gear. Its effed up. Oh and I can't spin my tires at all. Wtf? It just doesn't happen. I know that sounds ricery, but...
bets 60ft was 1.7 but I mostly have like 1.9s and 1.8s and 2.0s lol
I'm probably a shitty driver.
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How much boost are you building at the line? I take it you have the anti lag enabled?
Are you bogging on the launch or does it not feel as strong?
__________________
Scientific theories are the most reliable, rigorous, and comprehensive form of scientific knowledge. This is significantly different from the common usage of the word "theory", which implies that something is a conjecture, hypothesis, or guess.
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01-27-2010
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#9
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At-Least-It's-White-Again
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Re: Why Can't I Launch Well?
Can i launch it for you? 
__________________
'04 Honda Ricer: stock
Done fuckin' with cars but I will snap some photos of yours for now! =)
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01-27-2010
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#10
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formerly ecoli
Join Date: Oct 2003
Location: On the dyno
Posts: 4,892
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Re: Why Can't I Launch Well?
A 20G is a small turbo though too, they spool great compared to a what he has. Maybe he needs to launch at a higher RPM. A big turbo isn't going to be spooled until past 6000 RPMs in first gear. The dump the clutch and spin the tires stuff doesn't work so good with bigger power cars. If you do spin them, it will probably instantly goto revlimiter and screw you that way.
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01-27-2010
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#11
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Join Date: Sep 2008
Location: Saint Paul, MN.
Drives: E36
Posts: 2,269
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Re: Why Can't I Launch Well?
Yea the bigger turbo prob makes the difference. My shitty 16g talon had almost the same 60fts as you, it would rip (kinda) off a launch, then the rest of the ride was rather mundane. I'll have to re-learn how to drive my car this summer with the scm61 on there. Practice makes perfect kevin lol.
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01-27-2010
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#12
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N17r0U$ br4D
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Re: Why Can't I Launch Well?
Sounds like you're dumping it a little too much, at least to me. Does it feel like it bog really bad and then takes off? Maybe upping the launch rpm and trying to slip the clutch more will do the trick.
Practice does make perfect though, hell I suck at launching too. haha
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01-27-2010
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#13
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Finally Tuned...
Join Date: Apr 2006
Location: Zimmerman
Drives: Spyder GSX
Posts: 2,484
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Re: Why Can't I Launch Well?
does it pull like when I gave you and mike a ride when I launched my eclipse? I have my launch set at 6250 and just slip the clutch a little more.
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94 Supra TT Auto, Project 9.xx in the works
97 Spyder AWD 6 bolt 2.3, 579hp 496tq **FOR SALE**
Amsoil Dealer
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01-27-2010
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#14
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Join Date: Sep 2006
Location: new brighton
Drives: 04 evo
Posts: 1,212
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Re: Why Can't I Launch Well?
I used to spin through first with both the HTA88 and 40R and I was at similar power but lots more torque. Have you tried launching without the NLTS
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03 as evo-sold
04 bby ssl-sold
05 ww mr-sold
03 tb evo- current
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01-27-2010
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#15
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Join Date: Apr 2008
Location: Willmar, MN
Drives: 91GSX; 98 GSX; 92 Tsi AWD; Kawasaki ZR7
Posts: 319
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Re: Why Can't I Launch Well?
I can launch great just holding the RPMs at 4 grand, but if I use a 2-step rev limiter, I can't do crap no matter what, even at a much higher RPM.
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01-29-2010
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#16
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Join Date: Jan 2005
Location: Coon Rapids
Drives: 07' Z06, 16' Beta 300RR
Posts: 804
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Re: Why Can't I Launch Well?
is it building boost before you launch? If not then it needs more... more rpm or more build time I would guess.
__________________
-When in doubt, Moar RPM.
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