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The mkiv Supra Owners Club

BPU (Basic Performance Upgrade)


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  • 4 months later...
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in addtion to the four item listed by homer, isn't a aftermarket BOV also necessary? I was told the stock one can only hold 1bar

 

I've never heard that and still run my stock BOV with 1.2bar boost.

 

Cheers,

 

Brian.

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  • 4 weeks later...
  • 1 month later...

i am pritty new to the supra scene just had my over 2months now. i am wanting to remove both cats what else do i need this is what i am going to purchase.

 

1. blitz nur r

2. restrictor ring

3. walbro fuel pump

4. boost gauge

5. greddy boost limit cut controller

6. IK22 spark plugs

 

now what else do i need to remove the two cats can anyone advise me.

 

cheers :)

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I was under the impression that this thread was to help do away with all the "what do I need to go BPU?" type posts. Looks like it failed.

 

What it needs is a bit saying which parts are needed for BPU... oh wait, it has that.

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i am pritty new to the supra scene just had my over 2months now. i am wanting to remove both cats what else do i need this is what i am going to purchase.

 

1. blitz nur r

2. restrictor ring

3. walbro fuel pump

4. boost gauge

5. greddy boost limit cut controller

6. IK22 spark plugs

 

now what else do i need to remove the two cats can anyone advise me.

 

cheers :)

 

To remove the cats you need to buy decat pipes (exhaust pipes with no cats to replace the section of pipe that has a cat). Read the first thread very carefully. It's all in there. Otherwise, use the search button near the top of the page and search for decat or bpu or other key words and have a good read. Most of these questions have been asked before and answered numerous time so you'll save yourself a lot of time (and people won't be mean to you ;) )

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what i was gettin at was will that exhaust system remove both cats?

 

No. From the standard turbos, you get a small pipe with a cat, then another slightly longer pipe with another cat, and after that you get your cat-back exhaust system (clue is in the name). The Nur Spec will be from there back, and you'll still need to buy the 2 decat pipes.

 

Here's a pic of the 2 decat pipes

 

http://www.sonicsausage.com/Sections/Hobbies/TheCar/Images/CWDecatPipes.jpg

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  • 2 months later...
Where can i purchase this restrictor ring? Or do i have to make one myself? Where in the exhaust is it placed? I understand its in front section but is it before the 1st decat, between them or after?

 

You can get them from some of the traders on the forum. Place a wanted ad, and I'm sure someone will respond.

 

Mine is between the cat back exhaust and the last cat.. Not sure if that's the correct place but it seems to work.

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Where can i purchase this restrictor ring? Or do i have to make one myself? Where in the exhaust is it placed? I understand its in front section but is it before the 1st decat, between them or after?

 

Further back the better mate I think...maybe between 2nd decat and exhaust?

 

Anyone 2nd this?

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You can get them from some of the traders on the forum. Place a wanted ad, and I'm sure someone will respond.

 

Mine is between the cat back exhaust and the last cat.. Not sure if that's the correct place but it seems to work.

 

Actually, I think you just seconded it... ;)

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  • 1 year later...
Guest Suprafly

Right I'm currently ordering parts from whifbitz for a full BPU.

 

I've got a 96 J-spec RZ-S, I already have a Blitz Nur spec cat back system fitted, so I'm after:

 

HKS FCD

Walbro fuel pump

Both decat pipes

Restrictor ring

NGK Iridium plugs

 

Question is what grade plugs do I go for?

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