Holden Problems

I can't comment on the Walkinshaw chip specifically, I don't have any experience of it, but I'm not a huge fan of the chips in general as you don't really know how they achieve the results they claim, and ultimately you don't know what effect they will have on the car down the track. If you can find someone who has fitted a Walkinshaw chip you could ask them, after all first hand knowledge is the best you can get.

It sounds like it could be a problem with the brake master cylinder. Take it to a brake specialist who should be able to sort it out for you.

It's sad that it takes outside pressure to get action, but it's nice to know that there are people in customer service at Holden that do a good job. Happy to be of assistance.

Yes, it is within the law, and no, there's not a lot you can do about it. If it's any consolation everyone else is in the same, or a similar boat. The best solution is to estimate the actual speed using the GPS results and drive accordingly.

It's suffering from fuel surge, and I would be looking into the fuel tank, to the anti-surge fuel pot.

The main things to be aware of are the start-up knock in the engine that plagued the Gen III, also the rear suspension clunk due to warn bushes, and the rear tyre wear.
 

Change the oil before you drive it as metal particles can lead to severe engine damage. Talk to the dealer and demand it be fixed under the warranty.

We have asked Holden to check your claim and get back to us with a result of their investigation.

That's what happens when you change to low-profile tyres and fit harder springs, shock absorbers and bushes. You can try different shock absorbers, which might help, but there's not a lot you can do about it.

You can push for a better outcome, but it's highly unlikely that will achieve one. Brakes are wearing much faster than they once did, mostly as a result of eliminating asbestos from the pad material. Pads and rotors are considered wear-and-tear items, and as such are not covered by the warranty.