Jump to content
The mkiv Supra Owners Club

Few questions about the supra...


Guest dark samurai
 Share

Recommended Posts

Guest dark samurai

Hey guys

1) what does bpu do, and how do you achieve fully bpu?

2) on the 2jz-gte, the twin turbos, what pressure do they run at from stock?

3) bhp from tt supra

4) bhp from Na supra

5) what is a good price for a cheap decent supra twin turbo (stock preferably)

Link to comment
Share on other sites

Hey guys

1) what does bpu do, and how do you achieve fully bpu?

 

Increases the boost and improves turbo spool up basically by removing the catalytic convertors, Have a read of the link as suggested above.

 

2) on the 2jz-gte, the twin turbos, what pressure do they run at from stock?

 

Stock 0.8bar, BPU up to 1.2bar

 

3) bhp from tt supra

 

Power? BPU will raise the power from around 320hp stock to 380-430hp (flywheel) depending on the level of modifications.

 

4) bhp from Na supra

 

BPU is not a term used for the NA, removing the cats and fitting an aftermarket exhaust will improve the power and response a little.

 

5) what is a good price for a cheap decent supra twin turbo (stock preferably)

 

Age, mileage, spec, etc. will effect the value, compare prices on the classifieds section here, Pistonheads, Ebay, etc.

Link to comment
Share on other sites

Guest dark samurai

I know what bpu stands for, when I click it, it says about it, but not what you need to do to achieve it? So all you need to do is remove the cats?

Link to comment
Share on other sites

I know what bpu stands for, when I click it, it says about it, but not what you need to do to achieve it? So all you need to do is remove the cats?

 

You will need to fit

 

1. 1st Decat pipe

 

2. 2nd Decat pipe

 

Pic of 1st (smaller nearest the engine) and 2nd (longer) decat pipes next to the stock cats.

image

 

3. Aftermarket Cat Back Exhaust

 

4. Restrictor ring - flange shaped plate that fits between the decat pipes. This has a hole in it and adds a restriction to the exhaust gas flow. It is required as the stock wastegate is overwhelmed when the cats are removed and the car would dangerously overboost without it. Not required if UK Spec Supra.

 

http://images.bilgalleri.dk/uploads_alb_large_wm/1158580_l.jpg

 

5. Walbro Fuel pump - GSS342 if J-spec Supra

 

6. Cooler grade of spark plugs - needed to prevent misfire at higher boost. See FAQ section HERE

 

7. Boost Gauge

 

8. Exhaust Gas Temp Gauge - not essential but advised.

 

9. Fuel Cut Defender - the cars ECU will cut fuel if it sees more than 1bar of boost. This electronic devise fools the ECU and allows boost to be raised above 1bar, 1.2bar generally accepted to be the 'safe' limit.

Edited by Nic (see edit history)
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. You might also be interested in our Guidelines, Privacy Policy and Terms of Use.