So I hit up Atco last weekend... nice track...OK prep... terrible management. At best 45 minutes between runs with only 60 cars I would guess. They make you pull like 20 feet past a dried out water box and sit almost a minute before starting the burnout...they get bitchy if your burnout is more than 5 seconds. Then the entire staff took an hour long lunch break. Needless to say I won't be coming back here but thought I'd post the results of my first runs with the KP 2step which are interesting.

Runs in order e/t + 60ft
1. 12.2 @ 116.69 / 1.758 (first run, 8 lbs)
2. 11.926 @ 118.95 / 1.726 (9lbs here and on)
3. 11.921 @ 118.49 / 1.733
4. 11.914 @ 118.38 / 1.778
5. 11.885 @ 120.04 / 1.745

On the last run I think the headwind finally died off... the first 1/8 was pretty much identical to the others. Gains were all in the last 1/8 and my shifting was the same.

2step impressions

I can pull 1.6's 60ft without the 2step (but it's hit or miss), however my 60ft is a dead consistent 1.7 with the 2step. I tried adjusting launch RPM between 4k and 5k and it made no difference at all. My JWT clutch is much happier with the 2step -- when I pull 1.6's without the 2step I get some clutch smell. I think I'll settle for 1.7's.. not worth breaking my clutch over a 10th of a second.

no-lift impressions

This is pretty cool... just holding the gas down the whole time took a bit of getting used to but it's not a big deal after the first run. I tried with and without the no-lift and (compared to previous track days) it didn't affect my E/T on either side of the 1/8. But again, it gave me some more consistency and makes it a little easier to engage gears on upshifts since the engine cuts power.

overall

It didn't improve my times much if at all but it made my times far more consistent and is easier on the clutch. Without the KP I'd never consider bracket racing since my times were so inconsistent, now I'm having second thoughts

 

nice ....gotta love a 1.6 60ft. though.. i never messed around with a 2 step im not a fan of electronics. Seems it would be good if you were bracket racing or something for consistency

 

Agreed... for me I think the clutch responds very well to the 2step and the way boost comes on. Previously I had to purposely slip the clutch a bit and if the boost hit too hard or I slipped slightly too long it would totally fry the clutch pad. Now I have a consistent launch with a very brief (< 0.5sec) slip.

Next time out I'll work on my staging, maybe a bit more slip, and see if I can get back into the 1.6's!

 

definitely nice consistency there. I need to get mine working properly but am just too lazy. thanks for the tips the other day. You said all wires can be located in the battery box area right?

 

You proved what I have always said but most dont know enough to believe me.

The 2 step can def work, but at that power levels of our cars, you can do the same on a standard launch, as you confirmed.

The flat shift feature is nice for cutting back engine power to reduce drivetrain abuse WOT, BUT, it will not magically make you drop .4 seconds because THE DRIVER ISNT SHIFTING ANY FASTER. And if you were holding boost during shifts more you would have run faster ET's but comparatively didnt.

People are limited by their timing and left foot during shifts, most everyone has a quick arm to row a gearbox.

Being consistent is a sign you are getting comfortable dragging that car, it doenst come from the flat shift.

I ran with .1 second, 3 runs back to back bone stock.

Ive run on film 4 or 5 runs within .2 seconds NA on the same day.

Ive run on video between 11.9-12.1 on video at a private track day, about 15 passes. Ive done stuff like this numerous times.

Its because I know my car, and its abilities, and have perfected it for myself, no electronics needed.


Good driver > Flat shift anyday.

I'd like to see you run again with no electronic aids, you will be just as consistent I would bet.

 

The only time I ran my car in the past 2 1/2 years....I ran b/w 12.90 and 13.06 11 out 12 runs (only one that wasn't was the very first run at 13.12).

 

We can agree that the no-lift isn't doing much me. My turbos spool quick enough as it is, and I shift like I have palsy.

I compared my timeslips from my last cecil runs. All of my inconsistency is in the first 330ft. Whatever difference I see in the 330 is carried all the way to the end. 1.6-1.9 60ft's and 2-3 10ths in the remaining 330 depending on if I bogged.

As much as I want to keep practicing launching without the 2step, my clutch simply doesn't like doing 1.6's. I am focusing more now on curing my palsey.

As for the no-lift, it actually cures a long-standing issue with knock retard (false) on upshifts. Rapid on/off throttle at full boost throws timing for a loop (uprev 'bug' supposedly) which was responsible for some of the inconsistency (wasn't ALL my fault! LOL)

Consistency aside this mod has def. made dragging my G more fun.

On the next cecil day where we can get a decent amount of runs I'll completely disable the box and post up comparisons!

 

No videos unfortunately (camera fell off and was facing the seat). But I have this audio of the last 11.8 run:

http://djlab.com/stuff/djamps_kp.mp3

 

The injector signal and coil power can be had in the battery compartment, yes. No need to dig around the engine which is near impossible anyways.

 

so the way you launch with the 2 step is just bring the RPM to 4-5k and than just dump the clutch? coz if you do that on an AWD car with launch control you will just fry the clutch. At least thats how it is on my friends EVO X. He has to slip the clutch a little with the 2step in order to get a nice launch

 

Step 1: Clutch in
Step 2: Gas pedal to the floor
Step 3: Release clutch

I fully engage pretty quickly, I'd say within a half second. Not just 'popping' the clutch but I'm engaging it pretty quickly. You don't want to slip for more than 10 feet or so or you'll fry the clutch. I wouldn't recommend this kind of hard launching without tall sidewall slicks or you'll probably bust your axles.

 

You generally have to slip the clutch on all AWD cars off the line or you end up coughing the car out of the hole. That's not just a LC technique. It's not as easy as a simple dump.

 

You don't wanna dump the clutch on rwd either. Same problem with bouncing out the hole. Gotta get the right amount of slip but not so much u burn the clutch. Start with only a little slip and increase as needed.

 

By the way I'm back into the 1.6's with the 2step, at least at MIR. I think the issue was atco... **** prep combined with inability to do a proper burnout.

 

Noice! Still havent looked at mine yet. Lack of time sux!