0-60 Times Launch/No Launch Tune/No Tune

[Hakmeister]

Originally Posted by gunzo

nope .. not impossible .. just depends on the guy messing with the ECU

Thats my wife in the car screaming .. its in KMH .. so 60 mph is around the 9-10 o'clock position

Hook a brotha up

[phyzfer]

Originally Posted by LVSBB6

No launch 4.7 to 4.8.

Launch 4.0-4.1.

Both of the above test was done when I had fewer mods, should be a bit quicker by now

whoa those are killer numbers. I have no idea what the stock MR does 0-60.
I'm interested in getting in the 4.5-4.8 range without launch. How probable is this?

[verkion]

Originally Posted by turbor850

Nice, counted a 4.4ish in this vid -

what was done to your car exactly ?

The wife screaming added another 50HP...you should try it sometime!

verkion

[5ynth3t1c]

I have had 4.91 using launch control. That is using cobb stage 1 93oct

[LVSBB6]

yeah its really hard to improve 0-60 once you hit low 4s, especially on the SST where you can`t really launch it harder. TCU tunning anyone?

Originally Posted by verkion

Law of decreasing returns comes into effect...which kinda sucks actually. That and the minor fact that as gunzo eluded to on the other forums we don't launch at Full Boost. I'm guessing if we did...things would go KABOOM very quickly!

verkion

[turbor850]

Not really sure if this sounds right, but would the 0-60 time improve if you let off the brake as soon as the rpm hit around 4K, so as the needle was swinging up ward, so the rpms wouldn't drop ?

Oh and thanks for all the imput guys! ! !

[gunzo]

hey .. I just got a warning regarding the video

So just clarify to EVERYONE here that has NO CLUE whats going on ..

I was showing my wife what I could do with the car .. and IT WAS A NIGHT DRAG AT A LOCAL TRACK .. so that SHE WON'T STEP HARD TO GET OUT AT THE TRAFFIC AND RAM ANOTHER GUY IN FRONT ON THE STREET .. Geez .. its only 5 bucks to test the car on track anytime of the day/night

I'm a track guy .. and I get this warning .. feels funny at the analism here ..

[gunzo]

Originally Posted by turbor850

Nice, counted a 4.4ish in this vid

what was done to your car exactly ?

Intake, FMIC and piping kit, exhaust..

[DntBlongHere]

How are you guys getting your times, accessport? The reason I ask is that there is a huge delay between the car actually moving and the start of my accessport. The accessport starts when I start giving it gas not when my car starts moving so whether I try to launch or not the times are pretty similar. I will have to video tape it or get a stopwatch unless there are any suggestions.

[tokwc]

For launch 0-100 (0-60) timing, u can look at the speedometer to approximate the timing.

However, for 0-100(0-60) timing w/o launch, it is more tricky as the following events happen in sequence:
1. Brake off, u stomp the accelerator (WOT)
2. RPM needle will first swing
3. Speedo will only start to move from 0 after the RPM has move pass, say 3K RPM

So, there is a lag between WOT and speedo starting to swing from zero. In my previous ride, i had done both datalog and video at the same time (numerious time). The results that i arrived through log analysis were constantly about 1.2s slower than what i counted from the video (ie, count from video = the moment the speedo needle leave 0 till it reaches 100kmh). If i saw a 5s from the video, my log told me it was about 6.2s.

I've not done so for my X yet, but i am seeing the same RPM needle swinging first to about 3k rpm before the speedo starts to move in my video. I would suspect my log will say that i am about 1 to 1.2s slower than what the video suggested.

As mentioned, video time counting for torque launch does not have this issue and is fairly accruate IMHO... ie U release the brake and bomb the speedo starts to fly away from zero.