Thanks to those who responded to my previous post on this subject, I gave the S4 to John Gill, long time friend, Landsharker & proprietor of Emtec to sort out. John ran tests on his Dyno and found the 928 running very lean. Found a dead O2 sensor, replaced now, the S4 is back to its old self, running sweetly.
Thanks John, “you da man”. If anyone in the Brisbane area needs the services of someone intimately familiar with 928’s and a Dyno, give John a call.
Regards,
Ted 89 S4, running sweetly.