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The mkiv Supra Owners Club

Blitz Dual SBC, Spec S or Spec R?


Supra_Nish

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Found a very good price on one of these, but not sure if its the spec s or the spec r. :looney:

 

Apparently according to seller on the front it says: "Dual SBC dual Solinoid Boost Controller".

 

Am i right in thinking this is the spec r?

 

Also, if it is a spec s, is this suitable for the supe? I plan to run around 1.4 bar at some point.

 

Thanks in advance!

 

Pic attached.

006_35.jpg

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Yeah after much googling found the spec s can only handle up to 18 psi.

 

A little too close to the limit for me.

 

No visible markings between the two, as far as i can tell the main difference is the size of the solenoid. I'll see if he can stickhis head under the bonnet!

 

Thanks guys, much appreciated.

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I ran 1.1 on the MR2 with the single one, no probs, had a 1.2 bar overboost too.

 

I'm getting a dual sol one next month for the Supra (was thinking of the T/G profec E01 thingy, but it just screams "break into my car and pinch me").

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Ive spoken to Dusty at MVP and he clearly states that the Blitz SBC Spec S can handle 30psi / 2.1 bar...

 

Anyone else care to shed some light on this subject? :)

 

I've seen the figure 18psi as being the recommended upper limit on various websites. i.e.

 

http://www.jscspeed.com/universal/boostcontroller/blitz_dualsbcs.htm

 

Whether these are proven limits, or the tuners own recommendations i dont know.

 

Happy to be proved wrong as the spec s is much cheaper.

 

Anyone out there with a spec s def running more then 1.2 bar?

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If it's truly a DSBC (Dual Solenoid Boost Controller) then it should contain a dual solenoid actuator. Unfortunately it appears that Blitz marketing choose to replace the SSBC (single solenoid) by pairing the DSBC controller with a single solenoid actuator under the hood. The only way to tell the difference is to visually check the solenoid. The single consists of a solenoid (similar to a VSV) in a brass frame while the double is enclosed in a larger plastic housing. The good news is that either will control boost up to 1.5 BAR. The only supposed advantage of the DSBC Spec R is faster response.

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I actually ordered this a while ago from Dusty at MVP, but fear ive ordered the wrong unit... :) But i am a bit reluctant to return it...(mostly cause it will takes ages to get it in and out of customs etc, here in Norway) until i get it confirmed that it wont hold 1.2 Bar. As this is the absolute max im going to using. (its my everyday car)

 

I got a breif answer from Dusty that it can hold 30psi / 2.1 bar...as i stated earlier in this thread...but as i got the merchandice today...i had a look in the manual...and it says that the Spec S is not recomended for large turbos, twinturbo and sequentiali setups... So naturally im a bit worried here :)

 

normore1: It seems your right regarding its name...the box it came in says "BLITZ Dual-SBC Spec S" ...and its packaged with the small, single solenoid yes...(the one with the brass frame)

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..i had a look in the manual...and it says that the Spec S is not recomended for large turbos, twinturbo and sequentiali setups... So naturally im a bit worried here :)

QUOTE]

 

The single solenoid probably isn't suitable for a large single. As far as twin setups the manual is refering to twins in parallel configurations with two wastegates like on a V6. For the Supra the twins act in sequental mode and look like a single when they go parallel. There is only one wastegate so the system works.

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The single solenoid probably isn't suitable for a large single. As far as twin setups the manual is refering to twins in parallel configurations with two wastegates like on a V6. For the Supra the twins act in sequental mode and look like a single when they go parallel. There is only one wastegate so the system works.

 

That makes sense :) ...in it goes then i guess :D Me and a mate are going to install the DSBC and a FCD this weekend...and im needless to say really excited about how it turns out :D

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