Hino J08e wd ecu tune

[Bhutan]

is it safe to ecu tune the hino j08e wd engine to 350hp++ without any other mods?

 

[BoxTruckDoc]

Pushing the J08E-WD to 350hp without upgrades? Risky. You'll likely need better cooling, fuel, and a stronger transmission to keep things running smoothly

 

[Timerbell]

Pushing the Hino J08E-WD to 350+ hp with just an ECU tune is asking for trouble, stock internals, cooling, and transmission weren't built for that. You'll shorten engine life fast, if not blow it outright

 

[r3nz.trk]

is it safe to ecu tune the hino j08e wd engine to 350hp++ without any other mods?

I have to agree with @BoxTruckDoc and @Timerbell that it's not a great idea!
I think you can do it in stages instead and start with a less aggressive tune, maybe 300-320hp, and keep an eye on your EGTs!
If you're running too hot, you'll melt pistons and turbo seals real quick.
You're also going to need to address the clutch, driveshaft, and rear end eventually, as they weren't designed for that kind of power.
So while it might be possible to get the numbers, doing it safely and reliably for the long haul is another story!

 

[ilikeonions01]

I have to agree with @BoxTruckDoc and @Timerbell that it's not a great idea!
I think you can do it in stages instead and start with a less aggressive tune, maybe 300-320hp, and keep an eye on your EGTs!
If you're running too hot, you'll melt pistons and turbo seals real quick.
You're also going to need to address the clutch, driveshaft, and rear end eventually, as they weren't designed for that kind of power.
So while it might be possible to get the numbers, doing it safely and reliably for the long haul is another story!

Totally agree with this! I've got a 2015 Hino 338 with the J08E-WD and tried a mild tune last year, just bumped it to around 310hp for better hill pulls. Even then, I had to upgrade the cooling system and swap the clutch after a few months. The stock setup just isn't built for sustained high power. If you're hauling heavy or running long routes, staged tuning with solid monitoring (EGTs, boost, trans temps) is the way to go.