I can't get no lift shift feature to work..

I have tried it countless times from 3rd to 4th gear. I hold the gas down and never left off it while i press down the clutch shift and release the clutch as fast as i can. The car still revs up and my boost will drop down to about 10psi. It does hold the current rpm and does not hold at 15 like its supose to. Sometimes it makes a weird grinding sound or something and it scares me to keep trying it. Any tips on what i could be doing wrong?

 

is comp mode off or on

 

that doesnt matter. NLS is always active

 

per the owners manual it needs to be in comp mode to activate launch control

 

I'm talking about no lift shift not launch control.

 

Just curious why 3-4 nls, in my experience that is over 100 mph. most of the time all i NLS is 1-2 and then 2-3 when going on the highway.

BTW I did reach 100MPH in the Eisenhower tunnel in the mountains of Colorado! Nothing like a 1/7 mile tunnel at 11,000 feet going by you at 100 mph! http://en.wikipedia.org/wiki/Eisenhower_Tunnel

 

NLS is not launch control

 

yea its about 100 mph if i really rev it out. its just easier to do it on the highway then braking down to 40 and trying 2nd to 3rd. But either way it does not work. It revs to redline and i loose boost pressure no matter how fast i shift.

 

So, maybe you are shifting too late. about 6k put in the clutch shift and let it out smooth. you should get a single pop from the exhaust if you do it right. I have missed before and I get multiple pops and bounce off of the limiter.

 

maybe you're shifting too slow, or too early?

 

my fault I read things wrong

 

i have gotten the pop once before. It was really loud backfire pop.. I usually just drop the clutch after the shift (not really letting it out smooth), but it already is hit the rev limiter by then so i messed something up.. Do you have to be at exactly 6k for it to work?

 

Well you're going to lose some boost pressure...I'm sure the algorithm doesn't sustain maximum PSI under a NLS, right? 10 is better than back to 0.

 

yes it maintains some boost but i seen a video of someone doing it and it held 15. My engine also revs up which its not supose to do. I dunno i just don't get it.

 

I don't know about "smooth" with the clutch. It's hard to be very smooth with it when you're shifting in <0.3 seconds.

Just ride the RPMs up to around 6K or so, keep the throttle planted in the floorboard, and shift very quickly. You'll hear a pop (not always, but usually), the boost pressure will hold, and the RPM will drop to what it is in the next gear. The entire shift must be completed very quickly or the engine will leave NLS mode and redline instead.

NLS from 1 to 2 is difficult and I personally don't prefer to do it anyway. I'd recommend 2-3 instead since it's more legal than some of the others, won't strain the car as much, and comes up slower so you won't rush and mess it up.

Edit:

This is how the manual describes it...

 

ill give it a few more trys. This works with 2008 models correct

 

Correct... 2008+ SS/TCs

 

thats awsome dude. i wanna drive through it.

back on topic...
i love NLS

 

no idea why it wouldn't work, my 3-4 nls's are very nice.. same with 2-3 but 3-4 is a real nice fluid shift and i just keeps on pulling.

 

Are you holding max boost during the shift or does it drop.. Mine drops to 8 psi then climbs back to 15 psi. I don't get that swwwishh sound like i do when i let off the gas though so idk if its working. No backfire popping noise though.

 

Boost may drop, but not much. I've gotten it down to where it hardly drops at all, if any. It just takes practice and getting the motion down.

You shouldn't hear any "swwwishh" sound when you NLS, due to the point of it being that you're keeping the turbo fully spooled and avoiding blowing off/bypassing the air, thus keeping your boost pressure up.

You'll get it. Just takes some practice. It'll become muscle memory in time.

 

I wouldn't worry about being smooth with the clutch, but be deliberate rather than violent with the shifter... A smooth but quick shift is better than banging the gear and saving a tenth of a second, especially when doing a NLS.

 

I usually get two pops with my catless downpipe during a successful NLS!

 

The OP is shifting too late.

 

it works best just after starting your car up. the colder the engine the better for nls i always say.