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- HSV VS Senator, VX Calais II L67
Idle rpm is set in the tune.
Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
I had the stock tune in mine, and have had two tunes done by different people. TBH, I didn't really notice a difference between the stock and aftermarket tunes in terms of power. However, there are noticeable improvements with the auto shift points etc. Still idles somewhere around 700rpm as it always had, and in park or neutral sometimes idles up to around 1100rpm for a few seconds and dies back down, even with a tune from ace performance. Never does it in drive though, and tbh, I'd probably stick with the factory tune if I were to do it all again to save some cash.
Before I bought the cam, I spoke to the guys at crow and they said not to bother with a cam unless fitting a decent twin cat exhaust which apparently improves bottom end torque noticeably - something I still need to do. I have one for it, but need to modify the engine pipes to suit the hsv headers.
I drove a stock one a few weeks ago and god it was slow - very reluctant to rev. Mine's very happy up at around 5500rpm unlike some of my previous stock 304's. Got a roller cam block and a bigger roller cam to go in later on down the track with flat tops etc. Just a matter of making the time to put it together.