Quote:
Originally Posted by ntg44
Question - because my friend has a '12 Boss 302 and he told me he spoke with engineers of the car when he went to that driving school you get with the purchase. According to him, they mentioned that the reason the engine redlines at 7500 RPM is because the ECU can't keep up with the calculations at a higher RPM - this was the reason that the car feels like it keeps making power until the abrupt fuel cutoff at 7500.
Just curious - did you need to make any hardware changes along with raising the rev limiter, or was my friend misinformed with a bunch of hogwash?
Thanks  |
I can't speak from authority as an engineer, but it makes sense. Any processor has limits as to calculations per unit of time and data throughput. In an 8-cylinder engine with 32 valves and 8 coils and plugs, there's a lot of things happening every millisecond at high revs. At 7200 RPM, that's 120 revs per second, or .12 revs per millisecond. In that millisecond where the engine makes about 1/8 of a revolution, several valves will be in motion, a plug will fire, etc. If the ECU is only able to capture a small sample of the events that are happening then it'll be ineffective at regulating the engine, and efficiency and durability will suffer.