Reduced Engine Power
Melting Slicks
Joined: Dec 2013
Posts: 2,232
Likes: 315
From: Bridgewater New Jersey
I have read reports here about some issue with this controller giving some problems like yours.
Did you remember to check the wiring and connection for cleanliness at the TB, like I suggested earlier?
Last edited by extrapilot; Apr 6, 2017 at 06:08 PM.
Thread Starter
Drifting
Joined: Jun 2015
Posts: 1,437
Likes: 166
That's the plan tomorrow with the VTC. I checked the wiring and connection. MAF looked clean and was still shiny. MAP looked clean as well. I plan to look over them again just to double check.
Instructor
Joined: Sep 2006
Posts: 223
Likes: 4
Reduce power
I have the same issue replace pedal with no luck,replace 6 terminal connectors no luck, this is a voltage issue waiting for it to happen again but I am dealing with my local Chevy dealer who is in touch with gm and they tell them what to do. I think the next step is to replace all of the wiring to the ecu,been driving the car little more now with no promblem lmk what happens to you and I will do the same good luck
Thread Starter
Drifting
Joined: Jun 2015
Posts: 1,437
Likes: 166
I have the same issue replace pedal with no luck,replace 6 terminal connectors no luck, this is a voltage issue waiting for it to happen again but I am dealing with my local Chevy dealer who is in touch with gm and they tell them what to do. I think the next step is to replace all of the wiring to the ecu,been driving the car little more now with no promblem lmk what happens to you and I will do the same good luck
Le Mans Master
Joined: Oct 2014
Posts: 8,673
Likes: 2,728
From: Atlanta GA
They have been known to go out of calibration or might not have been calibrated correctly in the first place
Its a simple 1 minute process , hold both the A & B button down , watch the count down 3 , 2, 1 then the letter L will show with a number , this is the low point and is now set
Now depress just the A button once and on the display will be an "H"
Depress the pedal to the floor and press the " A" button again and you should see " A 100 " now release the pedal
you are now calibrated , turn the key off and then start the car
I would be willing to lay money on the fact that this will fix your issues
Good Luck !
Dave
Thread Starter
Drifting
Joined: Jun 2015
Posts: 1,437
Likes: 166
I would unhook the Vitesse ... or recalibrate it ... this would have been the first thing I did before spending $300 on a throttle body. before you throw more money and parts at it re calibrate
They have been known to go out of calibration or might not have been calibrated correctly in the first place
Its a simple 1 minute process , hold both the A & B button down , watch the count down 3 , 2, 1 then the letter L will show with a number , this is the low point and is now set
Now depress just the A button once and on the display will be an "H"
Depress the pedal to the floor and press the " A" button again and you should see " A 100 " now release the pedal
you are now calibrated , turn the key off and then start the car
I would be willing to lay money on the fact that this will fix your issues
Good Luck !
Dave
They have been known to go out of calibration or might not have been calibrated correctly in the first place
Its a simple 1 minute process , hold both the A & B button down , watch the count down 3 , 2, 1 then the letter L will show with a number , this is the low point and is now set
Now depress just the A button once and on the display will be an "H"
Depress the pedal to the floor and press the " A" button again and you should see " A 100 " now release the pedal
you are now calibrated , turn the key off and then start the car
I would be willing to lay money on the fact that this will fix your issues
Good Luck !
Dave
Thread Starter
Drifting
Joined: Jun 2015
Posts: 1,437
Likes: 166
Update
So I disconnected the Vitesse Throttle Controller and no more "Reduced Engine Power". I drove 30+ miles and WOT a lot. The VTC may be the culprit until I put more miles on the vette. I'm going to put 100 miles by Friday evening. I gotta say though, without the VTC my vette feels weak 
until I WOT. Took me about 15 mins to adjust. Thanks again for the advice CF members. 
until I WOT. Took me about 15 mins to adjust. Thanks again for the advice CF members.
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Thread Starter
Drifting
Joined: Jun 2015
Posts: 1,437
Likes: 166
Update
Today I put 50+ miles on the vette and no CEL. I think it's safe to say that the VTC was to blame. This has been a learning experience. I do miss the bite from the VTC though but i rather have no headaches. It was fun while it lasted and I have no regrets buying the VTC. Once again, thank you CF members. 
Team Owner
Joined: Mar 2014
Posts: 21,631
Likes: 1,144
From: Below the bottom of Berby Hollow, NYS
Today I put 50+ miles on the vette and no CEL. I think it's safe to say that the VTC was to blame. This has been a learning experience. I do miss the bite from the VTC though but i rather have no headaches. It was fun while it lasted and I have no regrets buying the VTC. Once again, thank you CF members.
Thread Starter
Drifting
Joined: Jun 2015
Posts: 1,437
Likes: 166
Team Owner
Joined: Mar 2014
Posts: 21,631
Likes: 1,144
From: Below the bottom of Berby Hollow, NYS
Le Mans Master
Joined: Oct 2014
Posts: 8,673
Likes: 2,728
From: Atlanta GA
Sometimes and only sometimes it has been reported that it loses its intial calibration and a simple 2 min recalibration is all that is needed . There were some reports of unintended acceleration etc blaming the Vitesse .... internet ledgend as the ECM drive by wire systems will not let this happen as you have seen ....
Dave
Thread Starter
Drifting
Joined: Jun 2015
Posts: 1,437
Likes: 166
If you understand how the Vitesse works , there is no chance of permanent damage I can assure you . The ecm reacted as it should when it saw the wrong voltage signal coming from the pedal
Sometimes and only sometimes it has been reported that it loses its intial calibration and a simple 2 min recalibration is all that is needed . There were some reports of unintended acceleration etc blaming the Vitesse .... internet ledgend as the ECM drive by wire systems will not let this happen as you have seen ....
Dave
Sometimes and only sometimes it has been reported that it loses its intial calibration and a simple 2 min recalibration is all that is needed . There were some reports of unintended acceleration etc blaming the Vitesse .... internet ledgend as the ECM drive by wire systems will not let this happen as you have seen ....
Dave