Anyone with experience with both the Blitz Dual Solenoid Boost Controller and the Greddy Profec B? Which one is better and why?

Or people with the Profec B or the Blitz DSBC can chime in with their opinions. Need to make a decision soon.

 

profec b is what i prefer. my friend has one in his supra and i have one in my spare bedroom......waiting for my engine rebuild/porting...... single turbo conversion....... fmic to be fabbed up.......

 

Profec is the way to go.There reliable and very user friendly.

 

Hmm...do both of them offer multiple boost settings?

I know the Blitz does...

 

The way I understand it is that the Profec B is adjustable to whatever pressure you want the actuators to see. The Blitz unit uses some sort of feedback reading to regulate the pressure into the actuator lines; effectively doing the same thing, but also allowing you to adjust to a digitally set level instead of a ****. I'm not exactly clear on how the Blitz unit does this though.

Any other opinions?

 

I have the SBD-ID,
Has 4 different settings for boost... a built in Boost gauge and Warning/limiter control which warns you of a overboost situation. The limiter cuts boost instantly if overboosting.

Easy too use...I was using pills for the first 5 yrs I had my car. I was nervous installing and first dialing in the amount of boost on the trial run. But withen 1/2 hr...I was quite shocked at how easy it was.

They is a gain control that controlls the how fast the secondary turbo comes on line.
And there also is a boost graph of see what kind of boost your getting thru all gears.

I know allot of guys have the Profec... but if they only new how cool and inovative the Blitz SBC-ID is...

Well worth the extra $$$.
jc.

 

That's a little over-the-top for me. I just want to lose the boost spikes and not have any boost creep. I know the Blitz DSBC has multiple settings as well ... that's interesting for a rainy day; or if I'm trying to be gentle with the car.

Profec B users, how easy is it to adjust boost to your requirements? Is it a turn-the-**** and test, or does it have a preset value?

 

The blitz has a auto setting and the greddy doesn't. On the blitz you can just tell it to not go over a certain amount and then you're set. The greddy, you have to start out small and then keep on gaining to the setpoint you want, kind of like the AVC-R. I like the way the blitz work since it's so easy to setup if you know what you're doing. Audio overboost warning, built in boost gauge with peak/hold, 4 settings (i think), and the fastest spooling and reacting boost controller from what I heard. This I think would be your better choice

 

I'd like the blitz, simply because I can set it at a low setting for my wife when she wants to drive the car (god help me..heh..j/k)..

I've been looking at the Blitz anyways, because of my WRX mods I'm looking at...

 

So the Greddy unit is really not very different from a manual boost controller (Home Depot valves) other than a more sensitive adjustment ****. The Blitz unit that you're referring to ... is it the DSBC or the SBC-ID? Or is this the same with both?

 

I've got the blitz SBC-ID. Love it, very cool, lots of features that are actually pretty easy to use. Plus it matches the Blitz PowerMeter which seems to be VERY accurate...(within 5hp of dyno #'s).

k

 

Umm, not quite. The Profec-B *is* pretty much a bare-bones electronic boost controller, but that still should be better than the mechanical valves. With the vavles, you've basically got adjustable pills that you can use to regulate the portion of turbo pressure that gets to act on the wastegate. With the Profec-B, you have an electronic circuit that controls a solenoid so that no pressure is acting on the wastegate up until right before you hit your desired boost, at which time it opens and allows enough through to cause the wastegate to open much more quickly than the valves. There was a really excellent article floating around the 'net a few years back on boost controller theory...I searched and you can read it here:

http://lootz.z31.com/bcontrol.shtml

 

The Greddy unit is faster responding than a ball and spring, I don't know by how much though. I do know that the ball and spring from www.extrememotorsports.com spools up faster than the AVC-R. My brother tried it out on his 300ZX and never looked back. I don't know how the Greddy compares to the AVC-R but I doubt they are that much different.

Both DSBC and DSBC-id are very fast spooling boost controllers. It holds the wastegate closed until right before you're at your peak boost and the dual-silenoid kicks in and controls the boost. I don't think the GreddyB controls boost that fast so it has to open the wastegate alittle way before boost setpoint. So as you see, the dual-silenoid works faster therefor giving you faster spoolup. Plus it has auto-mode so it's easy to set your setpoint.

 

Ok ... now I get it. The solenoid to the wastegate spring valve ... it makes sense now. Thanks for the clarification, guys.

Now the question is how much am I willing to pay for a boost controller. Apparently, the DSBC is no longer available .... so, $320 Profec B or $600 SBC-iD? Hmmm ... decisions, decisions, decisions.

 

www.rotaryextreme.com

go to monthly specials.. Chuck has them for $390 shipped. That's were my brother got his He could have some more in stock