You think that now after the car and engine have been discontinued that we're suddenly going to see experimentation and success with the engine. There were several pro race programs who have tried with varying levels of success to improve the Renesis when the car was a current supported platform and the results at best could be described as "mixed". With a dead platform, no other cars using the same engine, and an objectively better earlier engine, there is zero incentive for anybody investing development money into the engine.

The only platform I can see the Renesis being useful in, would be a very lightweight NA car, like an Exocet chassis. A sub 2000 lb car with a tweaked Renesis making 200ish whp would be a rocket.

 

Just because the pros have given up on the Renesis doesn't mean to say that us enthusiasts have to give up .
As our collective knowledge increases so does our ability to get better and better results . I'm not saying we will ever achieve what has been done with previous PP engines but we certainly can do better than what has been so far achieved by the average enthusiast .

My earlier comment re matching firecans' car was really just putting it out there that you can build a damn fast car with a renesis and there is no need to swap engines unless you really want a 400whp plus fire breathing monster.

 

Like the diasio?

 

Again, you fail to understand that the things you are discussing have already been achieved outside of the forum.

As an example, Diasio and Pettit were making 370 whp with 12 psig back early in the RX8/Renesis production years, but in a much lighter racecar chassis. The problems they experienced will be further exacerbated with a heavier OE based chassis. As a race chassis, they weren't encumbered by the OE pcm, crappy street gas, n00bish thought processes, etc. They had the resources, knowledge, and a fleet of vehicles to test and gather information with.

I understand your point though. A functional FI system paired with a well built 13B-MSP engine operating at a reasonable boost level (<10 psig) can be a viable performance option given the proper maintenance and care. Yourself and formerly Oldragger are good examples of this.

That said, the recent forays you're making into higher boost/power levels are only that. Eventually all the demons and limitations already discovered will show themselves to the people here choosing to go there now. My own advice is for you to have a spare backup engine for when you will need it.

 

What you fail to understand is that what we are doing is increasing the knowledge base of this community . We are not trying to emulate the feats of pro race teams - our cars aren't built to handle hours of track abuse and mine wont ever see that (at elevated boost anyway) .
And with regard to spare engines - you are quite correct . But as someone who has 100,000 turbo kms under his belt and gone through all the pain of blowing up engines I have I learned something of value from each occasion. It's a hobby/sport for me just like Autocross is for you.

I'm sure you are aware by now that I didn't accept everything I heard from the previous so called 'expert' we had on this forum . That guy has been proven wrong so many times it's funny to me now that anyone ever believed a word he said.
I know that you have good knowledge Team , but as you discovered the other day on the calc. load thread, you aren't always right either . And that was a very big thing to be wrong on.
Maybe , just maybe, it's worth doing what we are doing and we will get to a stage where 400whp turbo Renesis engines (that last) are commonplace on street driven RX8s .