FA20CLUB Vortech vs. Turbo Kit Comparision

[ft_sjo]

Any reason for the wildly different fuelling between the two packages?

[FA20Club.com]

SC dont have to be run as rich as the turbo you can if you want to but youll be wasting fuel. not to mention this particular turbo owner is really young and drives like it so i added extra .3-.4 afr for his own safety. im sure ill see youtube and facebook videos of his burn outs any day now. if i ran the same targets on both tunes the turbo would have made a bit more power through the band as well, that should be considered

[jamesm]

Originally Posted by catharsis

Pretty expected results. The turbo gives more power, especially in the midrange but is a lot more unstable in power deliver. The graph is all over the place. The S/C puts down a little weaker numbers especially in the mid range but provides a very nice smooth curve. Keeping in line with a linear NA feel.

there's nothing about a turbocharger that makes a dyno graph more 'spikey'. this is just one example that happens to be. the supercharger has a more 'na' feel, but not for this reason. it's due to the ramping of boost being more linear, whereas the turbo makes it's boost much quicker. above 3.5k rpm or so (depending on turbo size, i'm basing this off of my gtx2867r) this is pretty much negated and the boost from the turbo is just as instant. for example, above 3.5k, from off throttle vacuum to 7.5psi happens faster than you can look down at the gauge. centrifugals behave very much the same way. under 3.5k there is a bit of spool, but not enough to warrant giving up 200 additional potential horsepower. centrifugals generally aren't making much boost under 3.5k either.

[FA20Club.com]

curve is less spikey when afr targets are closer to 12:1

[King Tut]

Looks good. Would like to see some more PSI on the 57 trim kit.