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Old 04-05-2013, 02:37 PM   #511
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Made a few more pulls w/ meth and about the same. It did pull a bit of timing, but our IATs are higher today, too.

Looks like a good safe tune. Want to set it up so I run on the street at 45-50% duty cycle for the waste gates with the fuel enrichmemt off. At the track we turn the duty cycle to 85% and set the fuel enrichment to 50%. No changing tunes at all.

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Old 04-05-2013, 02:39 PM   #512
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Made a few more pulls w/ meth and about the same. It did pull a bit of timing, but our IATs are higher today, too.

Looks like a good safe tune. Want to set it up so I run on the street at 45-50% duty cycle for the waste gates with the fuel enrichmemt off. At the track we turn the duty cycle to 85% and set the fuel enrichment to 50%. No changing tunes at all.

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very cool! Looking forward to seeing some track videos!!!
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Old 04-05-2013, 03:20 PM   #513
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Derek looking awesome you guys are doing a great job. But stop wasting time on the dyno and load the car on the trailer and meet me here



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Old 04-05-2013, 04:12 PM   #514
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Derek looking awesome you guys are doing a great job. But stop wasting time on the dyno and load the car on the trailer and meet me here



Attachment 493915
Wish I could man.

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Old 04-05-2013, 04:30 PM   #515
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AWESOME jon on the numbers.......CONGRATS. Can't wait to hear how it tears up the track.
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Old 04-05-2013, 04:56 PM   #516
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Looks like New Jersey's version of Pony Wars (held at the South Georgia Motorsports Park in Valdosta, GA), except you actually get a real cash prize and a trophy. Not that a gift certificate is a bad thing, mind you, but it's no trophy and cash.

Have fun out there!
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Old 04-05-2013, 05:38 PM   #517
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CRAZY DUDE!

Thats some serious power!

I'm guessing a built manual tranny would put down a bit over 600 whp. These engines are sick...
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Old 04-05-2013, 06:50 PM   #518
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CRAZY DUDE!

Thats some serious power!

I'm guessing a built manual tranny would put down a bit over 600 whp. These engines are sick...
I would estimate 625 or so. I also wouldn't recommend it on the stock clutch.
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Old 04-05-2013, 07:14 PM   #519
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Well, done for the day. Spent the first hour or so cleaning up the tune and making it reliable. We only saw about a 10-12 HP drop without Meth, so we are good there. We can go back and forth on the settings and be within 2-3 HP every time. Our IATs where pretty high and we weren't letting it cool down between pulls, so no doubt we could hit 600 RWHP if we wanted to. Just wasn't the goal today. The track will prove we are making the power.

As for the street/track setup...that worked like a charm. I can run 50% duty cycle with no fuel enrichment and it runs a bit rich. 55% is nice and 60% is pretty agressive. These give me right around 500 RWHP. Change the duty cycle to 80-90% and turn the fuel enrichment controller to 4 and it is uppper 580s RWHP. No swapping tunes.

We are still having the issue with the throttle opening up. Ryan made a few adjustments and it looks better to me, but still not what we want. The 4000 stall converter will most likely solve the problem, but it would be nice to be able to do it in the tune. I really don't think many people will want to run that loose a converter. Oh well, we'll get the new single disk next week and know for sure.

Boost is looking good, with only a small spike at 50% duty cycle (was ~6psi before) and about 2psi at 90%. Had a bit of issue that seems to be created by the longer runners with the fuel plate. During cold start up we would start making quite a bit of boost. They took that out (I quess a lot like Vince does with the Ghost Cam???). Then we had some issues with fuel trims being off after you pull out of it with fuel enrichment. That's pretty much taken care of; certainly good enough for the track. Other than that, it seemed to go really well. Kudo's to Aaron for doing all the math and engineering on this. He hit it nail right on the head on everything (even if he says it was luck).

Now for the reality part of this. We don't make any more boost at 90% duty cycle than 80%. There are a lot of things that can cause this. What what I gather these particular turbos are good to about 21-23 psi and start to become ineffecient. Figure 2 psi loss from the intercooler and we get 19-21 psi max. Well, we top out right about 20 psi, so it is probably the limit for these guys. Another indication of that is that they are rated at about 450 HP each, but 750 or so together. My intercooler is rated at 750 HP, too. Finally, we think we have gone as far as we can with the stock heads. Basically, we are the limits of a lot of things and there won't be any easy mods we can do to make much more power. Now we have to focus on what will make it as fast as possible with the power we have. Maybe the LF3 heads will bolt right on and flow better than what we have. I for one can wait to find out. ~600 RWHP will keep me happy for a while.

Final thing, our IATs were really good at around 500 RWHP, but they are creaping up fast now. I know the back-to-back pulls didn't help, but we hit 150* at least once so that's not helping much. We can spray a little water with the meth to help that, but without a better intercooler and getting turbos back into a better part of their compressor map that's going to be an issue for anyone that goes this route. If you haven't started your 600 RWHP build but plan to, get a 1000 HP intercooler!
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Old 04-05-2013, 09:45 PM   #520
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Posted the dyno sheet over on the LFX Dyno thread.

http://www.camaro5.com/forums/showthread.php?t=233394
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Old 04-05-2013, 10:00 PM   #521
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Old 04-05-2013, 10:39 PM   #522
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speechless can't wait to see it on the track

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Old 04-06-2013, 11:12 AM   #523
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Hey Derrick you should try and make it our for the Georgia 1/2 Mile Private Runway Shootout. Here is the link http://www.camaro5.com/forums/showth...94#post6389894

Also a video of last years.

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Old 04-06-2013, 11:59 AM   #524
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Old 04-06-2013, 04:52 PM   #525
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Posted the dyno sheet over on the LFX Dyno thread.

http://www.camaro5.com/forums/showthread.php?t=233394
Hey bud.

I'm a bit confused with that dyno sheet and how it starts at 4,000 rpm.

It seems to suggest that your not making much power (relatively speaking...it is still a lot of power) until 4,500 rpm, when in reality I would have thought that your torque would have been spread over a broader rpm range.

Does this dyno reading just make it seem that way, or is that how your car is set up? I'm guessing due to the tuning, and the nature of the turbos that instead of making peak TQ at low RPMs...like an EcoBoost engine...yours instead tops out at higher rpms?

Don't take this the wrong way..I'm not taking anything away from your success...it is incredible. I'm just curious is all!
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Old 04-06-2013, 05:12 PM   #526
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Hey bud.

I'm a bit confused with that dyno sheet and how it starts at 4,000 rpm.

It seems to suggest that your not making much power (relatively speaking...it is still a lot of power) until 4,500 rpm, when in reality I would have thought that your torque would have been spread over a broader rpm range.

Does this dyno reading just make it seem that way, or is that how your car is set up? I'm guessing due to the tuning, and the nature of the turbos that instead of making peak TQ at low RPMs...like an EcoBoost engine...yours instead tops out at higher rpms?

Don't take this the wrong way..I'm not taking anything away from your success...it is incredible. I'm just curious is all!
Just trying to protect the TC and transmission. He's bring it up to about 4300-4500 RPMs at part throttle, starting the run, then hitting it. So, it makes more power down low than what you are seeing. In fact, until we can get a multi-disk TC and can lock it, we will probably never know how much torque we are making because it probably peaks below 4000 RPMs.
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Old 04-06-2013, 05:18 PM   #527
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Yep. Converter too loose for lower pull
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