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Old 04-04-2023, 03:50 PM   #29
ZL1Atlanta
 
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Turns out the duty cycle on the port injectors was getting too high so they swapped those for some larger, extended tip injectors. Just to recap, the car has a big bore pump (38% lobe), +30 DI injectors, and had 1000cc PI injectors.

The new injectors likely changed the spray pattern as they are now flush with the THP plates vs ~3/4” inside. Slight HP increase in 6th gear, but importantly, more power under the curve. I’d disregard the torque numbers as I don’t believe that is correct.
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Old 04-04-2023, 04:14 PM   #30
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Wow, 1600 lbs of torque.
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Old 04-04-2023, 04:18 PM   #31
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Quote:
Originally Posted by laynlo15 View Post
Wow, 1600 lbs of torque.
Yeah, I think something is not right there. It’s the first time they’ve ran torque number on my car using that dyno.
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Old 04-04-2023, 09:45 PM   #32
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Quote:
Originally Posted by ZL1Atlanta View Post
Yeah, I think something is not right there. It’s the first time they’ve ran torque number on my car using that dyno.
You running this weekend or next?
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Old 04-04-2023, 10:01 PM   #33
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Quote:
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You running this weekend or next?
Definitely next weekend but might try to squeeze something in before.
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Old 04-05-2023, 08:30 AM   #34
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Good Lord. That's crazy.
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Old 04-05-2023, 04:43 PM   #35
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Do you remember how much the 120mm TB/snout added?
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Old 04-05-2023, 05:00 PM   #36
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Quote:
Originally Posted by ZL1Atlanta View Post
Definitely next weekend but might try to squeeze something in before.
So you're launching in 2nd with nannies off and using the manual mode's auto shifting feature. Have you found yourself short shifting the 2/3 due to tire spin?
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Old 04-05-2023, 05:23 PM   #37
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Quote:
Originally Posted by ZL14ever View Post
Do you remember how much the 120mm TB/snout added?
I don’t. We never did an A/B test with just that being the change. I’ve heard it’s only 10-15 RWHP over the 112mm though. Perhaps it becomes more the faster you spin the blower, but can’t say for sure.

Quote:
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So you're launching in 2nd with nannies off and using the manual mode's auto shifting feature. Have you found yourself short shifting the 2/3 due to tire spin?
Yes to launching in 2nd, but I do not turn off stability control. Traction control is off. It typically doesn’t spin once I leave the line. It has happened a couple times, but it’s not a regular thing.
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Old 04-05-2023, 05:56 PM   #38
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Quote:
Originally Posted by ZL1Atlanta View Post
Yes to launching in 2nd, but I do not turn off stability control. Traction control is off. It typically doesn’t spin once I leave the line. It has happened a couple times, but it’s not a regular thing.
And you're launching from idle to WOT?
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'20 ZL1 1LE A10,
OEM short block, LME heads/valve train, E2650.
100+ octanes, no eth, no meth, no N2O.
2/23 - 1031/1004 wheel.
4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes).
2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next.
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Old 04-05-2023, 06:47 PM   #39
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Quote:
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And you're launching from idle to WOT?
No, I’m leaving around 2k RPM in 2nd gear and easing into boost with Smooth Boost. Prior to that we’d ramp spark.
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Old 04-05-2023, 06:59 PM   #40
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Quote:
Originally Posted by ZL1Atlanta View Post
No, I’m leaving around 2k RPM in 2nd gear and easing into boost with Smooth Boost. Prior to that we’d ramp spark.
What is smooth boost?
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'20 ZL1 1LE A10,
OEM short block, LME heads/valve train, E2650.
100+ octanes, no eth, no meth, no N2O.
2/23 - 1031/1004 wheel.
4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes).
2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next.
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Old 04-05-2023, 07:07 PM   #41
ZL1Atlanta
 
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Quote:
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What is smooth boost?
It replaces the vacuum based bypass actuator with one that can be electronically controlled by throttle position, time, etc.
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Old 04-05-2023, 07:33 PM   #42
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Quote:
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What is smooth boost?
Whole thread on it when I added it last year…
https://www.camaro6.com/forums/showt...ht=Smoothboost
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