NJV6 wrote:Why did you do valve springs again? i remmeber you doing them a year or so ago and rating it pretty good.
Why is the 6.0 not up to spec tune wise? Surely there is someone in Chch with the ability to tune it....
The dual VCM springs in the 40 didn't stay strong. VCM have gone away from the dual spring and gone back to the single one (so I'm told). I think they had to many failures. Not sure. But the new set that are in there now didn't cost me anything. I was lucky I didn't lunch the engine with the last set.
The 6L. Hmmm
Well, cause it has a 3/4 race cam and a couple of other internal goodies. It's been a handful for the local guy to tune. Each time he's had it on the dyno (3 or 4 times I forget now) he's always brought help down from up north. But they don't just dyno my car when this guy comes down. They do a few at the same time. To cover his costs i guess. But it's still not right. At 60k's it still surges. At first i was told, "back lash in the drivetrain". So I had new diff/axles/UJ's installed. Problem was still there. Mate when I found THAT out, on the day I was rope-able
Out of three or four times when I've been handed the car back after a tune. One time it hardly surged at all, but the horses were lacking.

Now I got the horses back, it surges. It's all down to the tune... (So I'm told from people in the US n Aussy)
You CAN have no surging AND horses. Turbo Killer Cams or TKM in Aussy say so. So do a tunning crowd I'm in touch with in the States.
I was looking at changing the rom chip in the delphi ecu to the, "Road Runner" software package that enable you get get a tune done, "on the fly". But no one in NZ has installed one yet. So I'm waiting for someone else to go there first. That system sounds like the bees kness.

I was talking to the guys at NZEFI here in Chch asking if they were keen to have a go tuning the 6L. They were the ones that told me about the Road Runner package. They said that if that package was installed, they would defiantly be keen to tune it. Those fellas tune lots of drift cars. They know their shite.
The only other place I'd get my car tuned (as is) would be a crowd up in Welly. No one here in Chch is up to speed on tuning something like mine. I've search high and low...Sad really.
