More Engine Power
Thread Starter
Intermediate
Joined: May 2018
Posts: 25
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From: Ocean City MD
More Engine Power
In the C7-GS owners manual it states that "More Engine Power is available" several times. Example: Perf Trac 3 has more engine power than Perf Trac 2. Question: How do we find out how much more engine power is there between the different modes and selections.?
I have gone thru the manual and can't find the specifics to what "more" or "less" means. I am sure there is more engine power available in Track mode than in touring; but, how much ?? I suspect there may be a tread on this already; but; did not fine one; so my apologies if this is the case.
Thanks
Gullwaydad in Ocean City, MD
I have gone thru the manual and can't find the specifics to what "more" or "less" means. I am sure there is more engine power available in Track mode than in touring; but, how much ?? I suspect there may be a tread on this already; but; did not fine one; so my apologies if this is the case.
Thanks
Gullwaydad in Ocean City, MD
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You're probably going to get nothing but people's unsupported opinions when you ask a broad, open ended question like yours. None of this will really matter as what really counts is hard data. A dyno is the way to pin this down. Just my 2 cents.
Le Mans Master
Joined: Aug 2015
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From: Toronto
This doesn't have anything to do with having more than 460hp. What it means is the PTM (Performance Traction Management) will allow you to have more of the 460hp in Perf Trac 3 than Perf Trac 2 by not cutting power to manage wheel slip.
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So if I understand you correctly, PT2 cuts back on power to the wheels? I don't think the OP was suggesting there would be more power than 460HP. OP wanted to get a better understanding of the difference in power between the 2 modes. He question is legit to ask.
Thread Starter
Intermediate
Joined: May 2018
Posts: 25
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From: Ocean City MD
Correct: Just thought for GM to say in the owners manual there would be more or less power depending on selections; that they would have done some sort of measuring that could be passed on the the users. Not looking for more than the max of 460hp; but, would like to know what my max is based upon other selections.
Pro
Joined: Apr 2017
Posts: 527
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From: NJ
Correct: Just thought for GM to say in the owners manual there would be more or less power depending on selections; that they would have done some sort of measuring that could be passed on the the users. Not looking for more than the max of 460hp; but, would like to know what my max is based upon other selections.
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Intermediate
Joined: Nov 2005
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Details were addressed in Ask Tadge. Basically, in a control loop, there’s a requested torque output from the driver based on accelerator pedal position. The PTM uses various inputs to determine how much torque is actually provided to meet driver request.
Last edited by CharLT; May 8, 2018 at 03:15 PM.
Racer
Joined: Jan 2015
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From: Millsboro, Delaware
Correct: Just thought for GM to say in the owners manual there would be more or less power depending on selections; that they would have done some sort of measuring that could be passed on the the users. Not looking for more than the max of 460hp; but, would like to know what my max is based upon other selections.
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From: Southeast, WI
Tech Contributor
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From: Charlotte, NC (formerly Endicott, NY)
You have to remember the engine only produces 460 HP at 6400 rpm, at wide open throttle and at full load. The LT1 or LT4 power curve will tell you how much power the engine produces at other rpms if the throttle is wide open and there is a full load applied to the car.
Bill
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The different selections change the throttle response not the total power. For instance if you drop the hammer in third gear at 60 mph while in Sport 1 the car will accelerate at reduced rate since the computer controlled throttle doesn't open as fast as if you are in RACE Mode. That helps people who don't understand basic throttle control and treat the throttle as an on/off switch. However, you will be able to get all 460 hp once you reach wide open throttle at full load and 6400 rpm.
You have to remember the engine only produces 460 HP at 6400 rpm, at wide open throttle and at full load. The LT1 or LT4 power curve will tell you how much power the engine produces at other rpms if the throttle is wide open and there is a full load applied to the car.
Bill
You have to remember the engine only produces 460 HP at 6400 rpm, at wide open throttle and at full load. The LT1 or LT4 power curve will tell you how much power the engine produces at other rpms if the throttle is wide open and there is a full load applied to the car.
Bill
