Top end improvements
Discovered, bought & started playing the game last week, must have raked in more than 15 hours as of now. It's a really, really good simulation, and I love to be able to follow the development on this.
I've found that most of the engine setup options are in the game, which is pretty nice. I've found a few possible improvements in the top end section of the engine :
1. Valve spring weight. In modding circles, you often see people changing their stock valve springs for heavier weights so they can access higher rpm, on run more agressive cams without suffering from valve float. I would like to be able to modify this value in the game, higher valve spring weight= less float and more friction. Might be limited according to valvetrain type, more cams = more weight available.
2. Ability to adjust intake runners lenght. This would enhance the current stock/performance/race intake with a separate value for runner lenght. Longer for more torque, shorter for more HP.
3. Dual-stage intake. Most cars have these now, there's a valve in the air box that opens up the intake at higher rpm (somewhat like running shorter runners) for more flow.
4. Ability to change the VVL engagement point, this is purely for fine tuning, current setting is not that restrictive. Could also incorporate truly infinite VVL as in BMW Valvetronic.
Also, while somewhat unrelated to top end, the fuel cut should really only be limited to 15-20k RPM, so as not to limit extreme designs and motorcycle engines.
Only my 2c, feel free to comment !