[Chippy]

As the title states. Tight section of a particular track the car was cutting the throttle on me abruptly for a split second then resumed as normal. I was in track mode default.
Have any of you experienced this?
Thank you for your input in advance

[NG329]

It may be pulling timing for some reason.

Questions:

Was was your MAP?
How was your IAT?
False knock caused by modifications?
Oil Temps?
Coolant Temps?

If you have HP Tuners you might want to log the data and review it.

[18.2SS.1LE]

Saw another post recently for the same issue, they replaced the fuel pump assembly. Log it to see if you lose fuel pressure.

https://www.camaro6.com/forums/showthread.php?t=554769

[SFV1LE]

If you were in Track mode with no PTM setting applied, that alone is not enough to enable you top put power down under hard acceleration and high Gs. You also need to set the PTM Mode correctly for your driving level.

If you're advanced you should be in PTM RACE Mode, or turn stability control FULL OFF, to not have the stability control power-cut under different conditions.

Even in PTM RACE it will interfere, but if you hit the apexes right it will do it in a way that uses the E-Diff to put power down very effectively for hard acceleration out of turns at FULL throttle, while cars without it depend on a lot of skill to maintain control and not oversteer.

So maybe try hitting some turns hard at lower speeds with everything FULL OFF (depress stability control button for 10+ seconds), and see if you still get any cut out. After ruling this out, try PTM Race at higher speeds in those turns to add some safety but still enable very fast laps.

Also, do you have a t least 1/4 tank when it happens? Shouldn't be a problem in ZL1 but worth checking.

[Chippy]

Thx all for replying yes interestingly it did it on the same section every time which was hard acceleration out of a reduced radius turn. As for mods one thing I forgot to turn off which I normally do is my Sprint controller for the throttle. I’m wondering if the faster throttle blade setting made the car intervene under that particular section. Car was 1/2 tank fuel.

[Vigilante375]

It's not doing it on the straights but in a corner? Where at in the corner is it happening? As you are rolling into the throttle or once you go full throttle?

If you're not in PTM mode, the nannies are still in full force and could be cutting power to keep you from spinning out.

You were just in track mode and not comp mod or PTM correct?

[SFV1LE]

Originally Posted by Chippy

Thx all for replying yes interestingly it did it on the same section every time which was hard acceleration out of a reduced radius turn. As for mods one thing I forgot to turn off which I normally do is my Sprint controller for the throttle. I’m wondering if the faster throttle blade setting made the car intervene under that particular section. Car was 1/2 tank fuel.

If you have a real skidpad where you can test and tune, I'd go there and mess around. I'm lucky the Willow Springs skidpad is just over 60 min away and it's like a mini race track with basically zero risk of crashing into walls (or other cars), only one car out at a time.

[Chippy]

Originally Posted by Vigilante375

It's not doing it on the straights but in a corner? Where at in the corner is it happening? As you are rolling into the throttle or once you go full throttle?

If you're not in PTM mode, the nannies are still in full force and could be cutting power to keep you from spinning out.

You were just in track mode and not comp mod or PTM correct?

Correct just track mode. And getting on the throttle hard coming out of a large but reducing radius turn. Never did it on straight or any other corners and I could repeatedly do it. Next time out I will make sure I have the throttle booster turned off as it does make a large difference in pedal speed.

[zain]

Originally Posted by Chippy

As the title states. Tight section of a particular track the car was cutting the throttle

could be fuel starvation

[Vigilante375]

Originally Posted by zain

could be fuel starvation

Not with half a tank of fuel. 1/4 or less I could see.

[Vigilante375]

Originally Posted by Chippy

Correct just track mode. And getting on the throttle hard coming out of a large but reducing radius turn. Never did it on straight or any other corners and I could repeatedly do it. Next time out I will make sure I have the throttle booster turned off as it does make a large difference in pedal speed.

Yes, just track mode will still cause the nannies to kick in. You can try sport comp next time. Little less invasive but I would try roll into the throttle next time a little less aggressive. For this particular corner anyways.

Gotta be a little more careful/ patient with this big car and tight, slow corners.

[NG329]

Originally Posted by SFV1LE

If you were in Track mode with no PTM setting applied, that alone is not enough to enable you top put power down under hard acceleration and high Gs. You also need to set the PTM Mode correctly for your driving level.

If you're advanced you should be in PTM RACE Mode, or turn stability control FULL OFF, to not have the stability control power-cut under different conditions.

Even in PTM RACE it will interfere, but if you hit the apexes right it will do it in a way that uses the E-Diff to put power down very effectively for hard acceleration out of turns at FULL throttle, while cars without it depend on a lot of skill to maintain control and not oversteer.

So maybe try hitting some turns hard at lower speeds with everything FULL OFF (depress stability control button for 10+ seconds), and see if you still get any cut out. After ruling this out, try PTM Race at higher speeds in those turns to add some safety but still enable very fast laps.

Also, do you have a t least 1/4 tank when it happens? Shouldn't be a problem in ZL1 but worth checking.

Correct. In PTR Race I notice it coming out of certain corners where the steering wheel angle is high. There’s a hesitation when I stab the throttle before I can actually feel acceleration.


One of these days I am going to get the courage to turn everything off.

[Chippy]

I’m back at the same track at the beginning of August. I will ensure I have the throttle booster off this time and if that doesn’t work will continue down the line taking off more intervention using the PTM modes. If that all doesn’t work I will need to look at possible mechanical issues however I highly doubt that’s the issue as it was repeatable and I was driving hard on many other areas of this track without issue.
I actually have the PDR video I can put a link too when I get back from vacation that might shed some light? I just don’t have access to the car now till August.
Also I read that whole thread provided were buddy was getting stumbling and had fuel pump issues. I had no stumbling anytime it was a complete fuel cutoff event I feel or power cut then just resumed like nothing happened.

[Dan82679]

Are you at half a tank or less and at a turn? It's probably fuel surge.