Quote:
Originally Posted by glamcem
another thing to mention for those who want to track their cars is the transient response differences between two options (SC vs TC) ..so for that I reason I personally like NA over the other options so my list would be like NA >SC> TC..but I have to admit I've never experienced such power delivery in the Rotrex units, power and torque consistently builds up ..I think I am just curious to test that, lol..
even the so called "lag is non-existent... check my spool videos" turbos (very small ones) still suffer the uncertainty of the throttle response..on the dyno, on WOT turbo lag looks non-existent but on the road course I ( and assume most guys who track their cars) prefer smooth, instant, predictable power delivery that results in more consistent track experience..I think if there was a reliable NA option that nets me 50 or a bit more hp (something that doesn't require expensive race engine build) I would prefer that over the SC.. but since I am already paying $4k I don't mind getting +100whp on the side  |
You're right about transient response even with an SC. With an SC, you'll have a short "early throttle" (as I'll call it) lag with the engine due to load from the SC, till the throttle opens up sufficiently. It's still earlier than a turbo, but still there.
Here's where throttle-by-wire can help. The throttle is tunable in software based on engine load & rpm, etc. That means a tuner can smartly on a dyno (it'll take time and itterative flashes until we get live tuning with EcuTek, if we get it at all) tune the throttle response such that the response to your foot on the pedal more closely mimics that of a NA motor. It's using software to cover up a mechanical shortcoming.
Heck, with even MORE work, something similar could be done with turbo cars too. It'd just take work and experimentation to do.