Official ITB Reference Thread

[nsxvtecvtec]

customized carbon fiber box?

 

[NSX_NA1]

Love it!!

Also curious...

Is that a custom intake box or a off the shelf setup?

 

[blaketjones]

Hi Everyone,

I’ve been excited for the day I could contribute to this thread - today is that day!

Engine: C30A
ITB Kit: My custom design, including 48mm RHD engineering throttle bodies, EFI Hardware DBW actuator and setup/commissioning by 909 Motorsport.
Supporting Modifications:

• Toda Spec A Camshafts
• Bosch Motorsport EV14 injectors, overall upgraded fuel system to suit ITBs.
• Bosch R8 coils
• Fujitsubo headers
• SOS sport cats
• RFY Suzuka V3 Ti exhaust

Tuner: Ash @ 909 Motorsport (NSW, Australia)
Fuel: Pump 98 RON
Results Before and After: Before - 191wkW/256whp, After - 201wkW (269whp)
Misc: Full write up on Speedhunters here. These are preliminary results with short test trumpets with ITG filter. I will be going back to the dyno with a less restrictive exhaust and a range of trumpet lengths for testing with airbox + other supporting modifications (oil cooler, crank trigger, etc.) to chase more power and torque from this setup.
Dyno Plot: Attached
Video: (surely this should be mandatory!)

 

[RYU]

Hi Everyone,

I’ve been excited for the day I could contribute to this thread - today is that day!

Engine: C30A
ITB Kit: My custom design, including 48mm RHD engineering throttle bodies, EFI Hardware DBW actuator and setup/commissioning by 909 Motorsport.
Supporting Modifications:

• Toda Spec A Camshafts
• Bosch Motorsport EV14 injectors, overall upgraded fuel system to suit ITBs.
• Bosch R8 coils
• Fujitsubo headers
• SOS sport cats
• RFY Suzuka V3 Ti exhaust

Tuner: Ash @ 909 Motorsport (NSW, Australia)
Fuel: Pump 98 RON
Results Before and After: Before - 191wkW/256whp, After - 201wkW (269whp)
Misc: Full write up on Speedhunters here. These are preliminary results with short test trumpets with ITG filter. I will be going back to the dyno with a less restrictive exhaust and a range of trumpet lengths for testing with airbox + other supporting modifications (oil cooler, crank trigger, etc.) to chase more power and torque from this setup.
Dyno Plot: Attached
Video: (surely this should be mandatory!)

It's funny that I'm replying to this while I'm in Sydney. Did you end up Toda valve springs as well?

 

[blaketjones]

It's funny that I'm replying to this while I'm in Sydney. Did you end up Toda valve springs as well?

I saw the red-tail in your instagram story, figured you might be down this end of the world! If you’re coming to Melbourne drop me a line.

Yes, Toda valve springs, and a few other reliability-focused modifications that haven’t been included in the post above, didn’t want to make the list too long.