yo ken
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- Joined
- Sep 20, 2014
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- Location
- South Jersey
- Vehicle(s)
- 2018 GT
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- #1
I was able to get in on a track rental at Atco today. I made ten runs an learned the best way to get down the track with an Eco and a clutch. Temperature was about 58 today and the DA was between 0 and 150 above sea level. The track was okay, but you had to have your car setup right. There was a NHRA legal class car, a N/A Cobra Jet banging 1.30 sixties all day with a best of 1.28.
What I learned about a the eco clutch car is it does not like dropping the clutch on launch control. I have mine set at 4400 and 5000. In fact it does not like the clutch dropped at any rpm. I even tried it at 6500 and as soon as it hooked, the throttle would close and it would bog.
What I did figure out, if you let the clutch out slowly, but not to slow as to slip it, it will reward you will good sixty foots and little to no throttle closing. As you can see from the first time slip I got a good run with just coming off the clutch slowly, and this was at the 4400 rpm launch control. Now this was a back to back run and the car never cooled off. The run before it was a 12.40 but with a 1.92 sixty and launched with dropping the clutch at 5000 rpm on launch control.
So I figured I would let the car cool down and try it again, but at 5000 rpm. This time I wanted to get the tires hot. My usual deal was a quick drop hop to get the tires clean. Without a line lock its a little tricky getting the tires to spin in the burnout box. It took a few times to get it right. I found I just need to stab the throttle and drop the clutch, then hit the brake pedal as quick as I can and just feather the throttle until it felt right. Well that all work well, but there was one issue, it hit the rev limiter. Not bad in itself, but it caused an issue with a OAR. The ecu thinking its a knock when banging off the rev limiter probably caused the OAR to drop from -.100, which is where it should be to -.060. As you can see it killed the run. The sixty was very good, but by the 330 it was pulling timing for rest of the way down the track. It probably would have went a 12.05.
It was late and the track rental was over, that was the last run. This is what I think will work best with the eco and clutch. Get the tires hot, try to get a good burnout without hitting the rev limiter. Leave between 5000-5500 with a slow release of the clutch, hit your shift points between 6000-6200 without lifting off the throttle between shifts. Of course this is with drag radials or slicks and a tune. I have not experimented with street tires yet with this tune, but I think the best it will run with street tires is 12.60-70.
I hope this may help some stick guys and girls get the best possible run.
As I edited this post, Adam from Tune+ is working on getting the throttle issues solved on Eco's with a clutch.
What I learned about a the eco clutch car is it does not like dropping the clutch on launch control. I have mine set at 4400 and 5000. In fact it does not like the clutch dropped at any rpm. I even tried it at 6500 and as soon as it hooked, the throttle would close and it would bog.
What I did figure out, if you let the clutch out slowly, but not to slow as to slip it, it will reward you will good sixty foots and little to no throttle closing. As you can see from the first time slip I got a good run with just coming off the clutch slowly, and this was at the 4400 rpm launch control. Now this was a back to back run and the car never cooled off. The run before it was a 12.40 but with a 1.92 sixty and launched with dropping the clutch at 5000 rpm on launch control.
So I figured I would let the car cool down and try it again, but at 5000 rpm. This time I wanted to get the tires hot. My usual deal was a quick drop hop to get the tires clean. Without a line lock its a little tricky getting the tires to spin in the burnout box. It took a few times to get it right. I found I just need to stab the throttle and drop the clutch, then hit the brake pedal as quick as I can and just feather the throttle until it felt right. Well that all work well, but there was one issue, it hit the rev limiter. Not bad in itself, but it caused an issue with a OAR. The ecu thinking its a knock when banging off the rev limiter probably caused the OAR to drop from -.100, which is where it should be to -.060. As you can see it killed the run. The sixty was very good, but by the 330 it was pulling timing for rest of the way down the track. It probably would have went a 12.05.
It was late and the track rental was over, that was the last run. This is what I think will work best with the eco and clutch. Get the tires hot, try to get a good burnout without hitting the rev limiter. Leave between 5000-5500 with a slow release of the clutch, hit your shift points between 6000-6200 without lifting off the throttle between shifts. Of course this is with drag radials or slicks and a tune. I have not experimented with street tires yet with this tune, but I think the best it will run with street tires is 12.60-70.
I hope this may help some stick guys and girls get the best possible run.
As I edited this post, Adam from Tune+ is working on getting the throttle issues solved on Eco's with a clutch.
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