I must remove some misinformation.
Later analysis of my wiring on my car has proven to me that I had to have operational leading spark plugs for the dyno run. This indicates that I really was making peak power at 38 degrees BTDC (203 WHp run).
Looking at the curves, I think I should have run a little leaner for peak power too. If It didn't cost so much to go to the dyno, I would do another run to see if I could sneak another 10 WHp out of this build.
Maybe I will go back after I get my clutch fixed and I can run the stock manifold too.
Information Summary:
Polished rotors seem to require more ignition timing (38 BTDC)
Low compression (8.2:1) is probably another part of it.
Lack of swirl in intake manifold due to excessive polishing requires additional fuel (Probably 12.5 - 12.8:1).
Even so, 460cc/min injectors are PLENTY for 200 WHp (69% duty cycle at 7100 rpm).
I really want to thank everyone for their input. It helped me to get a sanity check. It also allowed me to get a feel for typical timing and fuel requirements so that I can estimate what effect the changes I made had on the engine operation.
After I blow this engine up with too much boost
I have every intention of building a HOT 6-port (custom intake manifold) that will have much more radical port timing and 9.7:1 rotors.
I am puzzled about one thing - Why is my high end missing?
It can't be VE, here is my -5 kPA Injection time map (I run about -3.75 kPA at 2500 and -6.75 kPA at 9000. I have also included this data as an excel file (inside the .zip).
2500 4.53
3000 4.73 (rich spot on scan0005)
3500 4.53
4000 4.83
4500 4.93
5000 5.21
5500 5.31
6000 5.53
6500 5.72
7000 5.83
7500 5.83
8000 5.65
8500 5.41
9000 5.10
Running the numbers, I find that I should make a lot more power at 8500 than I do at 7500, why does it taper off?
Any input is appreciated, as I am surprised by the VE being 115% (giving me more torque than I expected) but I am disappointed with the engine's high rev performance.
Please review the attached spreadsheet for errors, but I don't understand why I am seeing this drop in combustion efficiency after 7000 rpm. I can only think ignition timing, but I did not have enough dyno time to do anything with it.
Any input is appreciated!