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yeah they tend to run down low 12's even in the 11's at WOT stupid maf tunes.the supercharged tunes run leaner than a stock vs tune makes me laugh

dunno if mine knocks or not... havent had it driving on the road much yet and havent had the lappy on it. the amount of advance it has tho, ive seen ecotecs knock with less, so I reckon ill be winding it back. ill do a log tho and see whats up. ive diffed it against a stock BSTK and the spark map is all thats different.

which table is changed, both or just the no knock timing ?

Heres a vs bt1 tune if you want to try it.
Are they any different to a stock tune ?

Most of the differences in the Police calibrations are to do with cooling strategy ,charging and idle.
Typically cooling fans come on earlier and sometimes the idle speed is increased slightly, the IAC steps can sometimes be different due to higher alternator loads at idle.

The VS Police tune is identical to the BWPJ with a different broadcast code.
BWPL = 1648 (dec)
BWPJ = 1628 (dec)
this is the same as the VR police files.
the only different ones were VT 5.0, these had an increased idle speed in neutral to help keep the battery charged when idling for long periods with the roof lights on

(the magical "Police Chip" that people so want to believe exists & gives amazing power)

Rob

Oh ok thanks bob i have read some of the garbage about super dooooper amazing top secret miracle horsepower memcals that are apparently removed before they sell their cars lol but i have seen the bwcs in the vs v8 had a knock filter board so i just assumed it had a similar tune to the hsv wasn't sure on any of the others

Doctor Bob wrote:The VS Police tune is identical to the BWPJ with a different broadcast code.
BWPL = 1648 (dec)
BWPJ = 1628 (dec)

Rob

so if there is nothing differeny between them then why even bother making a seperate one for the police cars ?

At a guess the Engineers probably looked at previous vehicles where there were special requirements for the Police so got a new broadcast code for the Police expecting there to be differences.
As development progressed, it may have been identified it wasn't needed but they just left it rather than change it or scrap stock that had already been purchased.

yoda69

The early stuff (VN/VP) had TCC lockup speeds altered, but other than that the calibration was the same as stockers.