Power loss on low fuel?

[AbdulN]

Hi there, is the supra known to reduce power when the fuel level is below quarter tank? Or on low fuel?

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[Octane]

Haven't heard, nor noticed this ever before. So I'm fairly certain that it doesn't lose any power.

 

[romanLegion9574]

Haven't heard, nor noticed this ever before. So I'm fairly certain that it doesn't lose any power.

There's an entire thread on this: Power loss at track | SupraMKV - 2020+ Toyota Supra Forum (A90 MKV Generation)

This is definitely a thing. Happened to me today at 2 bars of fuel on a 90 degree day at the track.

 

[Thraxbert]

Supra gas tank, like most modern coupes, is a saddle design. There are fuel starvation issues at high lateral G. Serious track enthusiasts should consider a fuel cell to span the gap.

 

[AbdulN]

There's an entire thread on this: Power loss at track | SupraMKV - 2020+ Toyota Supra Forum (A90 MKV Generation)

This is definitely a thing. Happened to me today at 2 bars of fuel on a 90 degree day at the track.

I hade these codes once I scanned it, once cleared the car drove normal again.

CDA038
CDA059

Before clearing these codes car was running not as aggressively,

Anyone know what these are?

 

[GoldenEye]

Bummerfault.codes

 

[AbdulN]

Bummerfault.codes

Lol those are cruise control faults.. don't know why they would affect power

 

[GoldenEye]

@AbdulN, you asked if anyone knew what those codes were, so I gave you a link to look it up. If you already knew what the codes were, why did you ask?

CDA038
CDA059
Anyone know what these are?

 

[zrk]

@AbdulN, you asked if anyone knew what those codes were, so I gave you a link to look it up. If you already knew what the codes were, why did you ask?

I think he looked them up, then was surprised at the result.

 

[zrk]

Lol those are cruise control faults.. don't know why they would affect power

They wouldn't.

 

[AbdulN]

I think he looked them up, then was surprised at the result.

Lol exactly..

 

[AbdulN]

Here are some logs is someone can decipher pls.

https://www.bootmod3.net/log?id=631a8e03c090c69d7d353079

https://www.bootmod3.net/log?id=631a8e03d10b437a79f8a313

 

[zrk]

Really conservative tune. You're undershooting targets a little bit, timing is pretty low, car is pulling a little bit of timing, mostly likely from shitty fuel. (93). Looks generally inline from a 93 OTS tune.

 

[underdonk]

This is probably all in my head, but I've felt like when my car is on 1 or 2 bars (about 50m remaining and when it switches to "reserve"), the power the car is putting down feels flat. I rarely let it get that way, maybe 3 times, and when I fill it up, it feels like the car behaves normally. Again, it's probably all in my head and I have no objective evidence, but it's something I've always noticed.

 

[AbdulN]

This is probably all in my head, but I've felt like when my car is on 1 or 2 bars (about 50m remaining and when it switches to "reserve"), the power the car is putting down feels flat. I rarely let it get that way, maybe 3 times, and when I fill it up, it feels like the car behaves normally. Again, it's probably all in my head and I have no objective evidence, but it's something I've always noticed.

I think from my research it seems car looses grunt close to quarter tank..

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