I tried doing a search but it doesn't seem to be working at the moment.
With my VS L67, what is the smallest supercharger pulley (PSI) that I can install and run safely without an intercooler?
I would like to get an intercooler, but unfortunately I don't have the time or money to fit one at the moment.
10psi, It's advised to run a cooler with 10psi, But a nice tune will see you sitting fine with that without a cooler.
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Originally Posted by garth
You dont even need a tune with a 10psi, just to run 98 octane. Ive done 80,000ks with my 10psi pulley, 250k on the engine and still going good
You will be fine without a tune at 10psi. I was running one for ages before the cooler.
Fully reconditioned L67, 98 Octane BP Ultimate, can't get much better then that. Thanks for the help guys
from the data logging i've done on the calais (10psi) i've noticed that the stock memcal can deal with the extra boost, however in warmer climates ie. townsville the stock memcal gets some wicked knock retard bringing timing down a fair bit! roughly the stock tune will be around 13 however with upto 10degrees k/r i was seeing only 3degrees advance in some runs.
atm im running upto 13degrees advance with no k/r due to the fact i've bumped the fuel up a fair bit! stock memcal afr under WOT were around the 13 mark. now mine sits at 11.6-8.
steve what would be the highest psi a non cooled car could run with a tune? i was thinking maybe 12-13? that will see between 8-10psi for low to mid rpm working its way up to the 12-13 in the higher revs? however you'd only be able to run stuff all advance to cope with the extra boost up top.
I run a 12psi pulley uncooled no probs, i have an xu6, always on vpower, 1.9 rockers, mace cai, stock hsv extractors & exhaust.
Ever thought of getting a memcal from mace for the 12 psi as your ecu may retard timing to reduce knock hence robbing you of power