Has anyone had a warranty claim denied? Seized engine! Pics of teardown added 6/5

[wootwoot]

What he said....

[ft_sjo]

Originally Posted by regal

Can you post the rescaled ignition retard tale you came up with to eliminate the knock? This alone would justify buying Brzedit and help a lot of people avoid engine failure.

Replace the load cells in red with -30 degrees or so should see you safe.

[s2d4]

Originally Posted by Sithspawn

Not necessarily. If the tuner is not aware of the isse and doesn't correct it, then you would still have the stock Transient Ignition Retard Map and you'd still have detonation on shifts. Period. The ecutek or brzedit software doesn't fix the issue: the tuner must fix it.

So if you do a 4th/5th gear pull to redline, will it behave the same as what you've demonstrated?

[feldy]

Everyone is worried about 2-3 3-4 4-5 5-6 gear shifts at wot! But what about 1-2 shifts at wot. This is mainly a concern for those of us that Autocross.

[Sellout]

Originally Posted by feldy

Everyone is worried about 2-3 3-4 4-5 5-6 gear shifts at wot! But what about 1-2 shifts at wot. This is mainly a concern for those of us that Autocross.

That is because Toyota South Africa has acknowledged that the issue happens on those shifts, and not on the 1-2 shift. Toyota South Africa says the issue only happens above 5200rpm. You have to shift out of first AFTER the redline in order to land in second above 5200 rpm according to the Toyota South Africa TSB.

That TSB shows that you land into third at just over 5200 rpm, but it says the issue is on the 3-4, 4-5, 5-6 shifts, not 2-3.

[sierra]

Originally Posted by feldy

Everyone is worried about 2-3 3-4 4-5 5-6 gear shifts at wot! But what about 1-2 shifts at wot. This is mainly a concern for those of us that Autocross.

Doesn't the ECU reduce the max power in 1st and 2nd gears?
That might reduce this problem?

[Traum]

Moto East has a very good ECU tune for the FRS/BRZ. I wonder if this would be enough to avoid the factory ECU tuning's detonation?

[spitz]

Originally Posted by Traum

Moto East has a very good ECU tune for the FRS/BRZ. I wonder if this would be enough to avoid the factory ECU tuning's detonation?

They must tune specifically to address the issue or it will still be there.

[strat61caster]

Originally Posted by sierra

Doesn't the ECU reduce the max power in 1st and 2nd gears?
That might reduce this problem?

I've NEVER heard of that (ECU "reducing power" for lower gears) outside of vehicles with very specialized motors/purposes (trucks or racing maybe?), would love to see evidence of that in commercial passenger vehicles, would be interesting.

It's considered not an issue because the gap in the ratios is large enough that the rpms fall down below 5200 with the 1>2, 2>3 gear changes, as such the lean condition that results in detonation does not occur. At least that's the "official logic" at the moment.

[ft_sjo]

Originally Posted by strat61caster

I've NEVER heard of that (ECU "reducing power" for lower gears).

Lots of passenger vehicles do. Don't belive the '86 does though. AFAIK it reduces power depending on water/oil temp.

[Hanakuso]

Originally Posted by ft_sjo

Lots of passenger vehicles do. Don't belive the '86 does though. AFAIK it reduces power depending on water/oil temp.

That's not what they are talking about. That safety feature is in place for regardless of any gear until things are warmed up

[ft_sjo]

Originally Posted by Hanakuso

That's not what they are talking about. That safety feature is in place for regardless of any gear until things are warmed up

I know, I should have used separate paragraphs.

[strat61caster]

Originally Posted by ft_sjo

Lots of passenger vehicles do. Don't belive the '86 does though. AFAIK it reduces power depending on water/oil temp.

Source?

I'm not saying it doesn't happen, I'd just love to see some evidence aside from "trust me".

[ft_sjo]

Mazda 3.
Ford Focus ST.
Volvo something.

It's usually to protect the transmission.