Securing communication operations between electronic control units (ECUs) is needed in modern vehicle architectures. This is because many attackers, nowadays, try to hack ECUs indirectly through vehicle to vehicle (V2V) and vehicle to everything (V2X) topologies by pretending they are a trusted system that needs to communicate with telematics ECUs in vehicles or directly by having direct access to one of on-board diagnostics (OBD) ports or communication buses in vehicles. Nevertheless, accelerating these communication operations is of a high demand as well to match increasing numbers of messages transmitted between ECUs and high throughput of new communication buses (controller area network flexible data rate (CAN FD), FlexRay, Ethernet, etc.). In this paper, we enhanced our previous work that implemented three AUTomotive Open System Architecture (AUTOSAR) communication (COM) application-specific instruction set processors (ASIPs), that support different sending, receiving, and hashing instructions, using two pipeline techniques. The experimental results shows that new COM ASIPs have a speedup of 2.25x to 5.5x over COM ASIP V3. It also shows that they have a high throughput of 100x to 338x over CAN FD and FlexRay communication buses.