newbish question re: boost controllers

[Guest akuma]

Hey guys,

 

New to the forums, so hello!

 

Ive been looking around for an answer regarding boost levels and couldnt seem to find it.

 

I currently own a jdm spec tt supra and have done a few mods for bpu.

 

Now ive come across a sard rom chipped ecu which seems to of have the boost cut removed and raised to 21psi. Obviously I dont want to run at 21psi on stock turbos.as far as im aware boost controllers cant lower boost - so does this mean there is no way to counter this high psi?

 

Thank you

[Homer]

Hi, welcome to the club

 

First it would be a good start to click the link in your own post where it says bpu. This is a quick summary of how it works and why it works, it should answer your question.

 

In theory there's no issue with a 21psi cap set by the SARD ECU, on jspecs the boost is controlled by exhaust restriction (cats), or in BPU a restrictor ring placed between the de-cat pipes. The raised boost cut is just an extra safety measure in case something goes wrong or if you see a big boost spike when the air is much colder and denser (e.g. in winter ). Thor used to do a great little boost cut defender that capped it around 1.4 bar after 3 seconds, but I don't think these are available anymore. I don't know what's around on the market these days but there must be something else more simple than using a chipped ECU....

[Guest akuma]

Hi, welcome to the club

 

First it would be a good start to click the link in your own post where it says bpu. This is a quick summary of how it works and why it works, it should answer your question.

 

In theory there's no issue with a 21psi cap set by the SARD ECU, on jspecs the boost is controlled by exhaust restriction (cats), or in BPU a restrictor ring placed between the de-cat pipes. The raised boost cut is just an extra safety measure in case something goes wrong or if you see a big boost spike when the air is much colder and denser (e.g. in winter ). Thor used to do a great little boost cut defender that capped it around 1.4 bar after 3 seconds, but I don't think these are available anymore. I don't know what's around on the market these days but there must be something else more simple than using a chipped ECU....

 

Thanks Homer! Ill definitely try and search harder next time.

 

so tell me if im correct. As long I use a rr in the exhaust (between mid and downpipe) I can then use the boost controller to UP any boost I wish to set it at?

 

Thanks