[Ecchi667]

Originally Posted by 17ZL1Camaro

I talked to the tech at the Chevy dealer. Tach and rev limiter hooked to same chip, so tach reading accurately. It only happens on 0-60 runs and is not Traction Control. I have experience Traction control and it feels different and is more subtle. It hits at EXACTLY 5000 RPM. However, if I'm just going down the highway and floor it, it will go above 5000 RPM's. It is only when doing 0-60 full out runs that I experience it and it happens every single time.

If you drop to 2nd on the highway does it climb over 5k? And if you did a run from 0 to the top of 3rd, will that stop at 5k too? May not be too many places you can try that, mind.

If it's "hitting a wall" that sounds like fuelcut, but I don't think it'd make sense to not be hitting that on the highway as well, unless you get less boost in higher gears - but that seems unlikely to me. I don't know much about superchargers, but on my old turbo s13 if I ran anything over 20psi it would feel like hitting a wall as soon as it was over 4.5k. At 20psi or less, it would head into the red.

My guess work probably helps none...but could an injector be faulty? Also, have you tried 0-60 in competition mode to see if that makes any difference?

[HyperBlueX2]

Originally Posted by 17ZL1Camaro

Both, It cuts out like it hit a wall (rev limiter) and won't go past 5000

If the motor cuts out, like you shut it off, there is an issue (rev limiter).... if it just doesn't climb in rpm, let it break in more......

[jwdominick]

Are you sure it's not in valet mode?

[Sooner Cole]

Originally Posted by jwdominick

Are you sure it's not in valet mode?

Well, not 100% sure. I know I didn't put it in Valet mode. But I will go check.

[lonestar_zl1]

I've seen other posts of not getting the 0-60 as advertised and some engine management even when everything is "off". Seeing some say that it wakes up after some additional miles, is there a change GM has the computer set to gradually allow a more aggressive power curve as you build miles on the car?

I wouldn't think so, but everything is so interconnected, nothing would surprise me.

[mlee]

Originally Posted by Sven59

If you are truly hitting the rev limiter at 5000 something is wrong.

^^^This

My A10 doesn't even go below 5000 on a 0-60 pull

[Mr. Wyndham]

There is no "break in" setting to the computer from GM. This has been confirmed.

I would recommend a dealer visit with the car and GM tech assistance. This is not normal...and at the very least, they should determine what is wrong.

It *could* be "demo mode" (forgot the official name)...

It *could* be valet mode....

It *could* be teen driver mode.

[Rumer10]

If I'm not mistaken it also has the teen driver mode I can turn on. Could that be the issue. Could've swore I saw it pop up somewhere saying these cars had it.

[travislambert]

That's really strange. There is a 5000 RPM limit for cold engines that haven't been running more than 5 seconds. That doesn't sound like your problem though.

Just for fun here's the table from the ECM.

[Sooner Cole]

Originally Posted by travislambert

That's really strange. There is a 5000 RPM limit for cold engines that haven't been running more than 5 seconds. That doesn't sound like your problem though.

Just for fun here's the table from the ECM.

Attachment 861448

I always make sure I warm the engine up before full pull. The place I went is 15 minutes away and I went up and down through the gears several times on the way out. I also check internal temps, oil pressure, etc before doing a 0-60 pull

[Sooner Cole]

Originally Posted by mlee

^^^This

My A10 doesn't even go below 5000 on a 0-60 pull

Well, as you start out from 0 and launch it will be well below 5000 and build as you get going. Mine does that but cuts out completely at 5000 RPM

[mlee]

Originally Posted by 17ZL1Camaro

Well, as you start out from 0 and launch it will be well below 5000 and build as you get going. Mine does that but cuts out completely at 5000 RPM

I mentioned A10 which would be quite different from yours. It goes to 4th gear at 60 so in 1st it's almost immediately over 5000. My point was it goes all the way to red line. I was checking out the video just last night.

As others have said you should be just shifting to 2nd at 60 or letting it hit red line and done. Wish I could help more but something just isn't right as other M6 cars are getting 3.9 0-60.

[Sooner Cole]

Originally Posted by mlee

I mentioned A10 which would be quite different from yours. It goes to 4th gear at 60 so in 1st it's almost immediately over 5000. My point was it goes all the way to red line. I was checking out the video just last night.

As others have said you should be just shifting to 2nd at 60 or letting it hit red line and done. Wish I could help more but something just isn't right as other M6 cars are getting 3.9 0-60.

I agree, something is not right. I have a question. What is done by dealer as pre inspection when they receive a car? I noticed mine does not have nitrogen in tires (my dealer does this with new cars) I think car may have gone from delivery trailer to showroom with no inspection. I'm wondering if it needs some sort of adjustment?

[Can'tHave2MuchHP]

Originally Posted by Android42019

Don't worry, it'll happen, closer to 5k miles it seriously started feeling different, now it actually backfires with the popcorn pops now and then yes I've hit 61/62 in first now, give it some time to "wake up" as I've seen others say, I've got 7040 on mine as of today.

This would be hilariously stupid if this is true....5,000 miles before you start to experience the full car? Come on. A great deal of owners of this kind of car won't even put 5000 miles on it for at least 2 seasons, unless you daily driving the car or driving it a lot. I only got put 900 miles on my car last year. There must be some other issue or hopefully it's something stupid like Valet/teen/dealer mode etc.