Delayed response
Thread Starter
Intermediate
Joined: Jun 2021
Posts: 26
Likes: 3
Delayed response
I have a 2021 non Z51 C8.
I notice that when I floor the accelerator in virtually any driving condition, the full power of the engine does not come thru for about 2 seconds. The car responds with added power immediately however full power does not show for a second or two. Could this be a function of ESC to prevent wheel spin (something that should not be an issue when traveling above 30 MPH)? The engine is not bogging down. The best way to describe it is almost like the lag one would experience with turbo lag in a turbo charged car. Obviously the C8 is not turbocharged however the symptom almost feels like it.I do drive with the settings in tour mode most of the time however this still appears when I change to sport mode also.
I notice that when I floor the accelerator in virtually any driving condition, the full power of the engine does not come thru for about 2 seconds. The car responds with added power immediately however full power does not show for a second or two. Could this be a function of ESC to prevent wheel spin (something that should not be an issue when traveling above 30 MPH)? The engine is not bogging down. The best way to describe it is almost like the lag one would experience with turbo lag in a turbo charged car. Obviously the C8 is not turbocharged however the symptom almost feels like it.I do drive with the settings in tour mode most of the time however this still appears when I change to sport mode also.
Safety Car
Joined: Mar 2014
Posts: 4,482
Likes: 668
From: Kilmarnock Va
I noticed this on the C7 also. They make gizmo’s for the gas petal that I believe go from 0-10. Most people are comfortable at 6. Oh by the way most people don’t notice the hesitation. But some of us do. Not sure why GM does this.
Drifting
Joined: Dec 2019
Posts: 1,309
Likes: 1,835
Are you in manual or auto? Is the delay while it down shifts when you step in it? If the tires are cold and/or you're in a low gear you can break the tires loose at a decent speed and will engage traction or stability control and reduce throttle. So many factors it's going to be really hard to diagnose without much more specific info.
Thread Starter
Intermediate
Joined: Jun 2021
Posts: 26
Likes: 3
In auto with tires warm. When flooring it, the tires do not break lose enough to trigger a reaction from T/C or ESC (It's barely a chirp). It feels more like a preemptive reduction to not allow tire slippage in the first place.
Race Director
Joined: Aug 2016
Posts: 12,763
Likes: 10,194
From: Garden Valley CA
Is your car past the 500 mile mark?
I don't notice any lag but I'm usually in Z-Mode (pretty much left at the default settings) when I'm flooring the car. And if I'm going slow when I floor it I'm in the next gear after a couple of seconds so it is hard to tell.
You may want to try Z-Mode or Track Mode (don't turn off the nannies) to see if you still notice the problem.
I don't notice any lag but I'm usually in Z-Mode (pretty much left at the default settings) when I'm flooring the car. And if I'm going slow when I floor it I'm in the next gear after a couple of seconds so it is hard to tell.
You may want to try Z-Mode or Track Mode (don't turn off the nannies) to see if you still notice the problem.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Instructor
Joined: Jan 2020
Posts: 200
Likes: 246
It’s the torque management in the ECM software. They use this to roll into the power to help with the shock to the drivetrain that dumping all the torque in an instant would cause. They’ve used this for a long time now, since the electronic throttle system has been around.