crap, so I think I know what's going on...I had a feeling from your response
Sorry man...and to think I left you guys for the system that is causing this...my assumption anyway
We may never see an upgraded high pressure pump. I had one in my MS3 long ago but no idea why, it just seems there is no appetite or even capability (at least widely known) to produce one for the K20C1. And in the MS3, power was nowhere near where the K20 can get to and the only option was a Cobb AP for that car. I think there's just a limit to how much the mechanical pump can deliver, period, by design.
Just for my understanding, what is the difference between upgrading the fuel pump to provide more fuel, and adding injectors to provide more fuel?
I'm not an expert but just to be clear, there are two pumps in the car. Low pressure in the tank, high pressure in the head. A better low-pressure pump, in-tank, combined with port injection and something to control it (Motec can but $$$$), and problem solved. That's super oversimplifying it, but that's at least one path to resolution, I think.
So then what do we actually need to make this happen?
And to be honest, once you pass those hurdles, the intake ports on the head really need to be addressed - they flow 100+ cfm less on this K20 than on previous ones, due to DI.
The R's sweet spot is just south of 400 HP. When the engineers developed and built this auto they knew they wanted to maintain a reliable practical daily and not compromise the track pedigree. It's doable to get just north of 400HP but really u can't get 29 mpg and 400 plus HP . A balance had to be made. I'm good with my sweet spot just above 350hp. Chasing horses will never end. The way a car is calibrated and tuned for it strengths to shine and masking weaknesses for that course road driving fun is what matters. Most of us will never track it or drag strip this . Let's just enjoy this experience of wielding this lil wakizashi swordAnd to be honest, once you pass those hurdles, the intake ports on the head really need to be addressed - they flow 100+ cfm less on this K20 than on previous ones, due to DI.
And at the end of the day, it's still a FWD platform with questionable rods upon which only very skilled drivers can even get everything out of the stock car on a road course.
That last bit is starting to hit home for me more than anything. The thing just doesn't need to put out 500 whp or whatever
That makes sense, bigger tracks and such. I'm working with Derek on my tune and I can confirm, on 93 octane with essentially FBO minus catback, I am out of fuel. He's had to back off of it a little bit. Most of my tuning sessions have been in 50-55* weather when I've made pulls to send him logs of.
