That's exactly what I fear is the problem, but with the problem showing up at 5/8ths of a tank, keeping it full isn't the most practical solution at the track although I suppose it *is* possible. I wonder if there are any bolt on baffling solutions for the G35 sedan tank...

 

are you applying brake and throttle at same simultaneously at any time in you cornering? Applying both on my car cuts power briefly – I’ve tried to get a mod to trick the ECU into not recognizing both are applied… it was on a list for a particular vendor/manufacturer but I don’t think it’s a priority right now…

 

No, I was definitely not applying both at the same time.

 

Did you get a chance to look in the tank yet?

 

What kind of turn is it. Is it a constant high speed constant turn or a tight one?
The only explanation that comes to my mind is PulsePlugs considering recent misfortunes that people have had with them. Try getting rid of those on ur next event before getting into deeper details.

 

http://www.my350z.com/forum/showthread.php?t=366374

 

Not yet, maybe this weekend...

 

I hadn't heard of issues with Pulseplugs... and I don't find anything when I search for any threads here... Can you provide a link to what you are referring to?

 

here: several members having major issues with these plugs
https://g35driver.com/forums/tuner-dyno/231707-pulstar-plugs-junk.html

 

I've seen several... search here and on my350Z...

 

It was initially and primarily in the tightest corners. It progressively worsened occuring in most corners as I emptied the tank.

I am fairly certain that it is just a lack of baffling and that it is a design issue with the car.

There have been no responses from anyone else about their experience when tracking the sedan, either confirming they've had the problem or not...

Again, this has never occurred to me on the street but was a real problem on the track where I was pulling higher lateral forces than I ever do on the street. Maybe I might pull a similar force once in a while on a highway ramp but it hasn't manifested the problem. I think it has to do with back and forth high lateral force cornering sloshing the contents of the tank wildly to one side or the other in a way that just doesn't happen on the street.

 

Well that's scary enough for me to pull them out! Eeek!

 

Common issue with G35/350z's. I guess it the way the fuel system is designed, but on tight corners where you have less than 1/4th fuel, the pump will struggle to keep the pressure constant due to low level and therefore you engine will not get enough fuel. If this happens, the engine goes into limp mode. I've had this happen at several track events.

 

^ exactly what I figured it would be

 

i have experienced this as well i was hoping to find an answer but im thinking do to the shape o the tank in hard right corners all the fuel shifts to the other side of the tank and it gets air for just a moment i know its not my VDC because i have disconnected my YAW sensor so it can not kick in