Siemens Deka 630cc Injectors Vauxhall VXR Z20LEH Z20LET GSI ASTRA OPEL OPC (4)

Astra H/G with Z20LET - Z20LEH engines to run just over 400bhp. They have a multiport spray pattern they can be ran and tuned to a very close spec to get them to idle perfectly. Running at full pace the AFR's are spot on consistently.