Launching with Nitrious?
Thread Starter
Pro
Joined: Dec 2009
Posts: 688
Likes: 18
From: Seattle Wa
Launching with Nitrious?
Hey Guys,
Here's the setup:
A4
295 KW2s in the rear.
100 wet shot, set to fire from 3000-6000 rpm (window switch).
Can I launch in 1st gear? I've used it in 2nd and have absolutely no traction loss but have been scared to try it off the line.
Going to the strip tomorrow and want to get a great time.
Here's the setup:
A4
295 KW2s in the rear.
100 wet shot, set to fire from 3000-6000 rpm (window switch).
Can I launch in 1st gear? I've used it in 2nd and have absolutely no traction loss but have been scared to try it off the line.
Going to the strip tomorrow and want to get a great time.
Melting Slicks
Joined: Apr 2003
Posts: 2,285
Likes: 16
From: Nashville TN
I am surprised you hook in 2nd with KWs in the rear. The track will be sticky if well prepped so you might be able to hook out of the hole. You will just have to try it and see.
Good Luck
Good Luck
Drifting
Joined: Jun 2006
Posts: 1,702
Likes: 1
Hey Guys,
Here's the setup:
A4
295 KW2s in the rear.
100 wet shot, set to fire from 3000-6000 rpm (window switch).
Can I launch in 1st gear? I've used it in 2nd and have absolutely no traction loss but have been scared to try it off the line.
Going to the strip tomorrow and want to get a great time.
Here's the setup:
A4
295 KW2s in the rear.
100 wet shot, set to fire from 3000-6000 rpm (window switch).
Can I launch in 1st gear? I've used it in 2nd and have absolutely no traction loss but have been scared to try it off the line.
Going to the strip tomorrow and want to get a great time.
Edit,this is a conservative approach,but gaining traction is the important factor. You can not make viable adjustment if your blowing the tries away at launch...gain good traction first and then tweak for best results.
Last edited by 98vettedave; Oct 15, 2010 at 04:39 PM.
Thread Starter
Pro
Joined: Dec 2009
Posts: 688
Likes: 18
From: Seattle Wa
Not being a A4 guy...M12 myself so it's a little hard for me to give viable advice. I use the Timing Tuner that has various functions that allows for quick changes to the launch set-up. You apparently have the ability to change your activation RPM...meaning set the widow switch to activate the nitrous at say 500 rpm's above your launch rpm thus giving the car the opportunity to gain traction prior to that sudden hit of torque and make adjustment from there. The Timing Tuner also allows for a delay sequence (.2 thru .8) that will help support traction prior to the nitrous hit. Do you have this function available? If so start at .8 delay and then adjust the sequence to obtain the optimal launch. Hope this helps you some.
I should probably just go launch it on the street and see where the RPM's jump to. I'm not a big drag racer but I had a guy at the track last time suggested instead of loading the converter to 2000 like I was that I should just leave it at 0 rpm and nail it. I got my best 60' times that way but my only concern is if the n2o hits at the same time i may lose traction.
Safety Car
Joined: Sep 2007
Posts: 4,005
Likes: 490
From: South Florida
I would just raise the window switch to 4000 rpm and launch on the spray. By the time you hit 4k rpm you should have traction, and your shifts shouldn't drop below 4,000 rpm. I would, however, lower the window switch to 5800rpm.
Team Owner
Joined: Oct 2001
Posts: 46,764
Likes: 5
From: Boynton Beach Florida
St. Jude Donor '07-'12, '20
Mine is a 2001 A4 with a 150 wet shot. Window switch is set at 3200 rpm. I leave on the nitrous from idle in D. That said, I also use MT ET Streets so I hook without issue.
Thread Starter
Pro
Joined: Dec 2009
Posts: 688
Likes: 18
From: Seattle Wa
I never came back here... I think it was the temperature but I was ALL OVER THE PLACE without even spraying in first gear. I got one decent run in (12.5) but all my other runs were HORRIBLE launches.
Normally I can floor it with no traction loss from a stop and be fine... Definitely wasn't the case last time I went
Normally I can floor it with no traction loss from a stop and be fine... Definitely wasn't the case last time I went
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Pro
Joined: Mar 2004
Posts: 610
Likes: 8
From: bellflower ca
A4
3600 TC
Redline adjusted to 6300 RPM
125 hp wet shot
Nitrous activates at 2800 RPM, shuts off at 6200
Sprays off the line at 2500 RPM
linelock
MT 315/30/18 DR
**** 60 ft on this video is 1.55 ***
http://www.youtube.com/watch?v=tBSLypn61k0
3600 TC
Redline adjusted to 6300 RPM
125 hp wet shot
Nitrous activates at 2800 RPM, shuts off at 6200
Sprays off the line at 2500 RPM
linelock
MT 315/30/18 DR
**** 60 ft on this video is 1.55 ***
http://www.youtube.com/watch?v=tBSLypn61k0