I just spent thousands going from stage 1 amr tune to a stage two with complete catless exhaust from turbos back, a UPD cold air intake, and UPD underwrite pulley. I have made six passes and didn't get much faster I'm running 7.33 in eighth at 98.6 best. Any advice or suggestions would be appreciated. Also, what is the proper way to launch this car?

 

You’re not going to see improvements in the 1/8mile with the minimal hp gain between stage 1 and stage 2...and the way these cars respond to hardware upgrades, you might not see much until after the first three gears with the next levels either.

Race Start or brake boosting until 2500rpms are the only ways to get a semi decent launch.

 

That's good to know, thought it may be something I'm doing.

 

As said not a far enough distance

does it feel better on the road ?

 

If you're looking to perfect your 1/8 mile runs, there is some room for improvement here. What octane fuel are you running? Also, try to brake boost and launch as close to 3k as it'll allow you. I can make launches at 2800 with no bog. Any higher, ecu freaks out. Any lower it's less than optimal. You can likely pick up a 1/10th or two and a couple of mph.

 

I will get some more practice with brake boosting as I haven't protected, thanks for the feedback.

 

yes, I raced my friend in his 2012 zl1 making 857hp and went door to door.

 

then there’s your answer

your car will annihilate people on the highway runs

 

[QUOTE=Kyle Rogers;7292285]I just spent thousands going from stage 1 amr tune to a stage two with complete catless exhaust from turbos back, a UPD cold air intake, and UPD underwrite pulley. I have made six passes and didn't get much faster I'm running 7.33 in eighth at 98.6 best. Any advice or suggestions would be appreciated. Also, what is the proper way to launch this car?[/QUOT


Are you having charging issues with that underdrive pulley? I want one but supposedly it will make the car run funny and lose power. Because the alt isn’t charging the car enough.

 

Quick launch vid...not perfect, as went a little too high on rpms, but shows the method, regardless.

 

dude that looked good to me. Question how long do you thinks mounts would last doing a brake launch at 2500? I just got new ones installed and I want to spend some time side stepping but don’t want to blow my new mounts

 

Not sure man...my unprofessional and obvious answer is, depends on how often you do that. My first mounts lasted about 3x,000 miles. Currently on second round, like you. I imagine I'll get another 3x,000 miles. Car is on the lift now for tech inspection, as I'm running it in a wannagofast event (1/2 mile) saturday in Ocala, Fl. All the obvious things look/feel OK.

 

Damn, that launch looked great to me! I wish my car can get moving off the line like that!

 

That looked as good as w213 amg launch

 

getting better at launching it man...still can't get it just right every time, which is certainly a downfall of the platform. can get it close each time, though. actually cut a 1.63 60ft on friday, which is a personal best

 

damn 1.63 is a forum best or damn near close!

that poor poor mct lol! Getting beat up

 

Is the ecm still factory?

 

I just hope launching it like that will not damage the MCT after a few tries?

 

now that numbers are starting to come out, the W213 isn’t launching as hard as people thought. Hopefully things improve as we get more data but as I get more practice in the W212 I’m getting as good or better. (Still not much to brag. Bout, lol)

 

i a W213 sixty foot of 1.7x and that didn't seem too far off from the w212... but that vbox data certainly shows that the W213 gets cooking fast after the 60'

 

Faster is to be expected with the hp bump it has but what all of us performance guys were hoping for and what people were saying when the first videos surfaced was that unlike the outgoing W212, this thing could launch. I’m not seeing that yet...and we may not since it essentially has the same transmission.

 

Usually 60ft is all the metric you need to judge how hard a car launches. However lm not so sure that is completely true today.
0-60 might just become a better metric.
Also don't forget, Chiro you are tuned pulling 60ft almost as good as a stock car

 

0-60 may or may not be a better measurement but if we want to use that criteria it needs to be measured properly. 0-60 should NOT be measured with roll out like these guys are doing with their VBox so those times are skewed imho. In the few actual 1/4mile measured 60ft times with the new model mine are much better than the stock W213, and if you considered VBox accurate, mine are still slightly better...but that’s not the point. The point is that we were hearing rumors that the new model was a monster off the line and it isn’t so far. I hope with a tune that changes but as seen on our cars, tuning hasn’t solved the tq limiter problems.