I now have the Blitz DSBC fitted to the Evo and
of course, the Apexi fitted to the supra.
The *BIG* advantage with the Apexi is that you
can set the solenoid duty *AT ANY REVS*,
and as Stu asks, this can be used to try and
increase boost on the first turbo as well as the second.
With the apexi you should be able to see up to 10psi
on the first turbo.
The Blitz BSBC is a far more simple controller, with just 1 solenoid
setting for each boost programme. For example, hi boost on the
Evo is a solenoid setting of 60% and it hits 1.2kg, setting 2 is
57% and it hits 1.1 and so on.
The new Blitz SDiC boost controller is much more like the Apexi,
loads of lovely graphs and even speed related boost control
when used in conjunction with the power meter id.
Personally, the only advantage I can see running the Apexi or
new Blitz SDiC is on really high powered cars without advanced
traction control, where you can adjust the boost curve to reduce
wheelspin or reduce boost a little on ultra high speed runs when
EGT's get worryingly high.
I love the Blitz DSBC in the evo because it is *SO* simple to use,
build quality is fantastic (the solenoid in the blitz is about 5 times
the size/weight of the apexi) and the unit is small and unobtrusive.
Gadget freaks go get the SDiC (£500+vat) and Power Meter (£200+v)
both are half din and communicate with each other; those who
just want to turn the boost up and drive the bloody car, buy the
DSBC!