I just was thinking of this after coming back for a 300km drive just now.
Why on earth would you want more power than a 13B turbo can deliver in a properly set up street car? in particular the headaches of 3 rotor transplant.
Out on the highway in my RICESP it is impossible to use full power in 1st, 2nd gears, 3rd gear is very dangerous using it to pass traffic that is doing 65mph or just over 100kmh.... it accelerates so stupidly quickly that literally in just over 2 seconds you are at 100mph and today nearly of 5 different occasions I almost lost it changing lanes, absolutely stupid levels of mid range power and instant response 4k to 8.5k I have yet to be beaten by anything and really shock the fuck out of many sports bikes! If you are game you grab 4th gear and keep onto it and do over 140mph and trust me its very very quick, you are not counting jesus beads waiting for it to happen, I am still yet to be able to look at any instruments when really on it like this (apart from quick glance at tach on shifts). 200+mph is but a formality and simply down to the size of your balls nothing else.
Now these are no hand grenades either been running like this on pump petrol and water injection for well over 8000km and still perfect compression. Economy is flat out unbelievable on 40lt I do 300km distance and that is driving like a mad man and really enjoying it at every opportunity.
So why go to a bigger engine?????
I don't know how the hell you can use more "torque", let alone power, I mean I have to detune my 13B so its not so dangerous on the road, and even so extreme caution needs to be exercised. so what is the go? do people just do it for the noise? or do they not know how to make a 13B fast reliable and durable?