Wondering if anyone knows if the speedo cluster is required for optimal performance when using a factory ECU on a manual Blacktop Beams?
In particular the speed sensor signal being sent to the ECU (in the Altezza the sensor goes from gearbox -> cluster -> ecu)
I've read some other toyota engines (eg 4A) have a similar issue where if the factory ECU does not pick up a signal from the speed sensor, it may drop the rev limiter, enter limp mode, etc..?
I've also had it mentioned to me in person that the Beams does this too.
Anyone have any experience with this?