Any member try foam injection subframe on S1 like R3
 

I drove R3 and S1 back to back on track before
The steering feedback on R3 is amazing , I think due to age of chasic, but one thing Mather a lot could be foam injection subframe
As u can see on my pic, Mazda already try this setup on JDM special edition model
On the pic it say, this change improve 20%of stiffness !!! Sounds too good to be true
Wonder any member try to do this mod on their S1 8 ?

The S1 Shinka model had it, weight + low hp/tq doesn’t make a good combination. Does a NC MX5 have it? No, they’re just smaller, less power, lighter; and faster.

I'll do it for fun. Is it the front or the rear sub frame? Honestly, haven't spent a lot of time down there.

I honestly can't see this making any difference to the stiffness. Maybe dampen out a little noise or high frequency vibration. On the other hand, it's not going to add much weight either.

Whew, glad we can put that to rest now ...

I'm just glad we got to have two whole threads in the same subforum about it...
https://www.rx8club.com/rx-8-racing-...ike-r3-269772/

Isn’t life grand, lol

Woah I feel like I just read this in another thread...

Oops, I hadn't noticed the other thread when I replied to this one. Well now I know.

Wicked Deja Vu indeed.