Was the AU IRS a bad setup?

[HP Dude]

FWIW, I'd say the AU, as a pure double wishbone set up, is technically a better design than the control blade IRS. But it was a little heavy. Control Blade is almost as good, and lighter, hence its adoption in the BA series.

Originally Posted by Casper

ok, lets set the facts straight as far as LSD/IRS on the XR6's
There are 2 XR6s as we all know, the HP and the VCT. Both were avaliable from the very first AU (appox sept 98). In tha AU 1 BOTH came standard with LSD.. it was not an option. It was a standard feature..3.45 LSD. In addition the XR6 VCT (sedan) came STANDARD with IRS AND 3.45 LSD (mine has it and is a Nov 98 car that hade NO options fitted).
The XR6 VCT continued with IRS AND 3.45 LSD for the entire model life (AUI, II, III) whereas the XR6 HP lost the LSD as standard part way through the AUII model and it became an optional extra.

As for the IRS.. it is amazing to say the least. I would say its only shortfall over the BA IRS is weight (so yes, the BA IRS would be "better")... but given the "plumper" bodyweight of all the BA/BF's, any benifit it may have gained was lost by the weight of the car. Now an AU with the BA IRS... that would be DAMN impressive!

Thanks for setting the record straight.