3D printed Carbon Fiber Air box

[LeeJohn]

Hey everyone, I am a 3d engineer kinda protype guy, and years ago i built a custom fiber glass air box (by hand) for my ITBs on my tii..  That tii brake booser prevents off the shelf type air boxes so i made one.

 

Then i bought a industrial 3d printer that can print nylon carbon fiber and other exotic filaments. So i design a air box thats 2 walled and specifcally deidcated to air flow and looks.  

 

note: before i built a air box i was running just veloctiy stacks with little filters.  Dyno at 138 hp at wheels.  After the air box with very little tune change she was at 149 hp.

I will dyno this air box as well to seeif anything changes.

Here are some pics

 

[Ian]

Very nice work!

[zinz]

Fantastic!!!

 

Nice performance gains!

 

Ed

[James Stein]

“Very little tune change” what does that mean? Did you change the jetting? 

[LeeJohn]

James,

 

 Here is a pic of before and after.   I added a air temp sensor which it did not have before, and we adjust timing at idle.  i think that was it.  Maybe some mixture changes mid range to account for leanness/richness.. 

 

[tzei]

Excellent!

 

Will it hold boost?

[NickVyse]

nice, what kind of filter are you putting on the end?

[jimk]

I don't understand how the torque at all rpm points can improve equally, that is not the usual case.

[gary32]

Velocity stacks and little filters can be pretty restrictive but I too question the low rpm gains.

Maybe a fat air day vs a skinny air day, we have these regularly in So CA.

Pretty shape though and nice looking.

What's the delta change represent?

 

Quote

note: before i built a air box i was running just veloctiy stacks with little filters.  Dyno at 138 hp at wheels.  After the air box with very little tune change she was at 149 hp.

I will dyno this air box as well to seeif anything changes.

 

 

Edited March 10, 2020 by gary32

[xr4tic]

Nice, what's your setup?

 

Were the dyno runs on different days?  That would certainly explain it, really should be back-to-back runs.

[M3M3]

nice part!  regardless of any gains, just being able to put a real filter on the box will be better than no filters or sock filters on stacks.

[LeeJohn]

Yeah different days. And different seasons

southern ca springtime was first one.  And was colder I think for second one.  I didn’t ever think the air box would give power gains. I did it for the mega squirt and to have proper filter and temp sensor etc etc

 

I don’t know if this one will hold boost but I could print a version with 100% infill and that is insanely strong.  Willing to test.

 

 

[tzei]

Jenvey air box (that i have) was tested to 3 bar so there is your target. 

 

Again - nice job.

[Dudeland]

It is great to see this sort of work.  if I had more time i would like to fool around with 3d printers.  If you are looking to make stuff, I think there are a lot of people here would want some cool one off stuff.  

 

People with butchered door panels with shitty speakers would like to have a better way to mount speakers in the doors. 

[LeeJohn]

yeah im really enjoying the printing.. If anyone has a any ideas let me know.

maybe ill start a new topic