Sonic_boost808
New member
Any one know how to disable this governor its really battling my tune -_-
Wide open throttle governor
- Thread starter Sonic_boost808
- Start date
Chevy2012sonic
New member
Jus did a quick search and found that most people say its programmed into the computer. Ull have to get to reprogrammed. Not sure if its true or not
2012 chevy sonic
mitdr774
also a dinner prick
speed limiter or rev limiter? Either way it will be tune involved. I do not see how either is inhibiting your tune any. If the car is tuned then whoever tuned it would know how to adjust either limiter assuming they knew what the hell they were doing. If they do not know how, then maybe they should not be changing the programming.
Swordsmith
242hp/252 ft-lbs BNR EFI
You never have throttle control with this car. All you have is a torque request pedal. A tune can adjust the ratio between that pedal and how much torque your ECU tries to produce... but calling the pedal a throttle, or even a gas pedal, is technically false, in a way that actually matters in some cases. WOT is fun to say, but again, not really what's going on.
There are two features that you might think of as a governor.
One is only rumored to exist, something that stops you from going really fast; the figure we've seen reported, from an untuned RS Sonic on the Autobahn, is 130mph. I've also seen it reported that Trifecta, the most popular tune, has said they will not raise that top speed without your first buying tires rated for it. Others, though, have shown speeds, on dynamometer, significantly higher than 130, calling the existence of this limit into question.
The second is a rev limiter, which prevents your engine from going faster than a certain rpm. Your speed in that case varies depending on which transmission you have, and which gear it is in. This too can be raised via tuning, and with the stock tune, your power up at the high end of the band is really dropping off well before you reach that limit, so there's no real reason to raise it unless you're tuned anyway... and questionable there. I think we've calculated that the speed at the rev limit in 6th on an LT/LTZ would be something like 216mph, and the only way you're going to get a Sonic up to that speed at the current state of modding is to drop it out the back of a C5a.
There are two features that you might think of as a governor.
One is only rumored to exist, something that stops you from going really fast; the figure we've seen reported, from an untuned RS Sonic on the Autobahn, is 130mph. I've also seen it reported that Trifecta, the most popular tune, has said they will not raise that top speed without your first buying tires rated for it. Others, though, have shown speeds, on dynamometer, significantly higher than 130, calling the existence of this limit into question.
The second is a rev limiter, which prevents your engine from going faster than a certain rpm. Your speed in that case varies depending on which transmission you have, and which gear it is in. This too can be raised via tuning, and with the stock tune, your power up at the high end of the band is really dropping off well before you reach that limit, so there's no real reason to raise it unless you're tuned anyway... and questionable there. I think we've calculated that the speed at the rev limit in 6th on an LT/LTZ would be something like 216mph, and the only way you're going to get a Sonic up to that speed at the current state of modding is to drop it out the back of a C5a.
stever525
New member
Wasn't that done in STOCK trim already?
laborsmith
New member
I don't think it was stock but I pretty sure there were no engine mods.
Was that one of those ads done by Rob Dydek?
Can't remember for sure.
Laborsmith
Was that one of those ads done by Rob Dydek?
Can't remember for sure.
Laborsmith
stever525
New member
I'm not sure if Rob D. was involved with that one, but you are right, there probably were other (non-engine) mods done.
KartRacer
Member
I can verify the existence of rev limiter
accidentally hit it in second), quick reminder that I pushed it WAY too far. All of the stock power is made well below the rev limiter. Glad it was there anyway.Sonic_boost808
New member
K i went with the bully dog piggy back style tune nothing super fancy and i notice i only get power from the tune when i run at most 70% throttle when i pedal to the metal it bogs and limits itself from allowing the tune to take effect any ideas?
Swordsmith
242hp/252 ft-lbs BNR EFI
You are the first to report this issue here... or even as far as I know to report having that particular tune. I'm interested in getting more details, but it doesn't sound like a governor at work; neither the rev limit or the top speed limit would work like that.
The Sonic ECU does deliberately limit your power production with the stock tune, anything you add that increases your potential power gets nerfed back into the expected spec. The tunes I'm familiar with, Trifecta and Vermont Tuning, eliminate that limit and allow the engine to give you the power it's capable of, instead of what GM thinks you should have. I hear the same thing from regular Bully Dog and HP Tuners users; yours is the first tune I've heard of that isn't doing that... if that's what's going on.
I'm not sure that that is the issue though. Each tune is set up to deliver power differently, and perhaps the tune you have just peaks at around 4000 rpm.. no, that doesn't sound like what you're describing. Hmm, interesting problem. More details!
The Sonic ECU does deliberately limit your power production with the stock tune, anything you add that increases your potential power gets nerfed back into the expected spec. The tunes I'm familiar with, Trifecta and Vermont Tuning, eliminate that limit and allow the engine to give you the power it's capable of, instead of what GM thinks you should have. I hear the same thing from regular Bully Dog and HP Tuners users; yours is the first tune I've heard of that isn't doing that... if that's what's going on.
I'm not sure that that is the issue though. Each tune is set up to deliver power differently, and perhaps the tune you have just peaks at around 4000 rpm.. no, that doesn't sound like what you're describing. Hmm, interesting problem. More details!