My 8 is stock for right now, am very unfamiliar with the tolerances of the rotary for boost. I read a few posts on the Greddy kit, saw that it can reach about 260-280whp. What kind of boost does it take to be getting that? How much boost can the Renesis handle before you have to start working on the internals? Most engines I have worked on can only safely handle about 10psi before you have to tear the thing apart and putting in stronger stuff. But the rotory doesnt have valves to bend, or rods to forge, or pistons to buy, or any of that. im in unfamiliar territory.

 

I have a speed force racing Turbo running 9 psi 301whp anything more than that you risk blowing the seals on the engine
D.

 

As has been said before, boost levels are meaningless. 9 psi on the greddy mitsu turbo is like 7 psi on the garrett 3071R, resulting with the same power levels, but cooler intake charge temps and more torque.

What I can tell you is that there are people running 11-13 PSI on pump gas. And there are people with over 360 whp in the renesis with stock internals.

So long story short - it all depends.

 

No one knows, We haven't hit the limit yet.

Highest we know of so far on this board is about 360rwhp on 91 pump gas. Seems 400 would be doable with meth injection. maybe 450 with race gas.

The limit is the flow of the non-overlap ports.

 

The rx8 just overcame its previous major issue, tuning. Now tuning solutions are widespread.

Then it just overcame its second biggest hurdle. Ignition.

People didn't have the ability to go over 330rwhp before 3 months ago.

 

interesting. so what changed with tuning? Did they revert back to maps, or still using maf