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The mkiv Supra Owners Club

BPU and Boost Controller Advice needed


the_host

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Ok Guys, ive searched through the forums and i've sort of got an idea on what i need for my BPU.

 

1) Taking out both cats so i'm going for a 3" straight through one piece exhaust system (from turbos)

2) Walbro GSS342 fuel pump

3) Thor FCD

4) Colder Plugs

5) restrictor ring

 

I do not really want to fit a restrictor ring so is there a boost controller out there that allows you to lower the boost?? As it might be awkward to put in a ring with the straight through one piece system.

 

Thanks

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1) Taking out both cats so i'm going for a 3" straight through one piece exhaust system (from turbos)

2) Walbro GSS342 fuel pump

3) Thor FCD

4) Colder Plugs

5) restrictor ring

 

As Rob says, a boost controller can only raise boost.

 

I would advise fitting 2 piece cat replacement pipes, instead of a single pipe, as this will allow you to easily put the 2nd cat back in place come MOT time, so you can get through the emissions test. Member Chris Wilson can supply these if needed.

 

Also you should fit a boost gauge (so you can monitor things), if not fitted already.

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As Rob says, a boost controller can only raise boost.

 

I would advise fitting 2 piece cat replacement pipes, instead of a single pipe, as this will allow you to easily put the 2nd cat back in place come MOT time, so you can get through the emissions test. Member Chris Wilson can supply these if needed.

 

Also you should fit a boost gauge (so you can monitor things), if not fitted already.

 

Its a j-spec 93, so MOT time i won't need the cat back in :) .... there's already a boost gauge on there... so saved some money there:eyebrows:

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Its a j-spec 93, so MOT time i won't need the cat back in :) .... there's already a boost gauge on there... so saved some money there:eyebrows:

 

You will not need a boost controller, you will be hitting 1.4 bar + spikes without a restrictor in a 3" system

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Its a j-spec 93, so MOT time i won't need the cat back in :) .... there's already a boost gauge on there... so saved some money there:eyebrows:

 

dont think your car will pass the emissions test without a cat in .unless you know the tester or your car scrapes through.

 

an egt gauge would be a good idea too.;)

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dont think your car will pass the emissions test without a cat in .unless you know the tester or your car scrapes through.

 

an egt gauge would be a good idea too.;)

 

I think i better have a quiet word with my tester :eyebrows:

 

btw whats a egt gauge? :blink:

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