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Old 04-15-2012, 05:49 PM   #511
SUX2BU
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Quote:
Originally Posted by Padre View Post
Hat-tip to Ted Jannetty: in another thread he mentioned about fuel pressure weakening with less fuel (less weight of fuel behind the pick up point).

A light bulb went off:

I had been running <1/4 tank (habit, and never a problem with the stock fuel pump and bucket).

The new fuel pump does not have a bucket at the pick-up point in the fuel tank like the stock pump. Ergo, fuel sloshes around, and it gets worse with each pass (less fuel).

Needless to say, I'm running a full tank of gas this Sunday.

But I am hitting the track! And the roll cage is going in on Monday for the Atlanta Camaro5 race at Commerce next Friday!

Padre
Quote:
Originally Posted by Padre View Post
Well, the bucking was definitely the fuel bucket. Everything is smooth today. Full tank of gas,

Good traction, best so far is 11.029 @ 125.97 with a 1.704.

Density Altitude is over 2000, so it's a bit warm for records, but I'm happy so far. Now I can tweak the rest of the tune.

Padre
I wish I would have known you had an aftermarket pump with no bucket. I've seen this a lot in the GM trucks and it is why I kept the bucket in my turbo truck.

Glad you got it figured out!
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Old 04-15-2012, 05:52 PM   #512
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10.980 @ 125.62, 1.625 sixty, 7.036 @ 100.26

DA = 2150 feet



Still has more in it.

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Old 04-15-2012, 06:20 PM   #513
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Backed it up: 10.987 @ 128.09, 1.676

MPH increased - I was able to remove IAT correction to keep overall timing at 16*. No KR.

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D1SC GT9 JBA-LT = 720/680 | 10.330 @ 133.61, 1.546 sixty... Camaro King at ECS V, Darlington.
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Old 04-15-2012, 06:41 PM   #514
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Very nice, what rpm are you shifting at?
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13.15@106 1.95 | 100% Stock
12.37@112 1.85 | + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune
12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
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Old 04-15-2012, 06:44 PM   #515
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Very nice, what rpm are you shifting at?
I just launched one at 1500rpm and cut a 1.608, 10.922 @ 128.29.

Shifts are nice and even at 6600 rp.

One or two more passes...

Padre
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D1SC GT9 JBA-LT = 720/680 | 10.330 @ 133.61, 1.546 sixty... Camaro King at ECS V, Darlington.
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Old 04-15-2012, 10:38 PM   #516
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OK, here's the best run:



10.818 @ 128.25, 1.565 sixty.
6.943 @ 101.74 in the 1/8th.
DA = 2000.



And not a fluke:

Name:  10s-20120415-steele.jpg
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Once I got the tune dialed in, I hit consistent 10's. Once I was happy with that, I experimented with the launch RPM. The best launch was at 2200 rpm. Track was great, DA (from Dragtimes IPhone App) was above 2000 all day, and 100* on the track itself.

Roll cage goes in tomorrow. Glad I finally need it now.

Padre
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Old 04-15-2012, 10:58 PM   #517
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Glad you got it figured out! And great runs. What a beast!
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Old 04-15-2012, 11:01 PM   #518
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nice run Padre!
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Old 04-15-2012, 11:02 PM   #519
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Very Nice Run 1.5X 60' and the car squats nicely... way to go...
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Old 04-15-2012, 11:12 PM   #520
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Nice runs Padre!
Did you have to pedal it at the top of first or is that wheelspin I hear on the shift?
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Old 04-15-2012, 11:22 PM   #521
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Quote:
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Very Nice Run 1.5X 60' and the car squats nicely... way to go...
Thanks. The track was hooking great, my MTs are well seasoned, and no front sway bar - all worked to make a 2200 launch possible.

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Nice runs Padre!
Did you have to pedal it at the top of first or is that wheelspin I hear on the shift?
Yep, chirped the 1-2 shift , using the CTS-V tranny parameters.

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Old 04-15-2012, 11:31 PM   #522
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Awesome. Sounds good! I've dropped the ball on mine for now. Got other projects going on. Be back on it when summer is over.
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Old 04-16-2012, 12:55 AM   #523
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AWESOME TIMES!
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Old 04-16-2012, 09:00 AM   #524
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Padre, are you running a trans cooler, if so, which one?
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Camaro Now: Mods for the Masses Part I | Part II
13.15@106 1.95 | 100% Stock
12.37@112 1.85 | + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune
12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
11.84@115 1.59 | + 3.91s + Race Star 17x7 Fronts
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Old 04-16-2012, 09:03 AM   #525
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Padre, are you running a trans cooler, if so, which one?
Not yet, we couldn't fit it in front of the intercooler, so still considering options. I might end up routing it in the rear.

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D1SC GT9 JBA-LT = 720/680 | 10.330 @ 133.61, 1.546 sixty... Camaro King at ECS V, Darlington.
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Old 04-16-2012, 10:29 AM   #526
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New video, a montage of several 10-second launches:





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Old 04-16-2012, 04:21 PM   #527
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Great job Padre, glad you were able to figure it out. I can't wait until I can get my car to run close to those numbers.
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