Few questions about the supra...

[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)

[ScottC]

Click Bpu in your own post and all will be revealed.

[Nic]

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.

[Abz]

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

 

Have a look at my For Sale at the bottom of my signature, pretty cheap for a decent TT setup.

[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?

[Nic]

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.

 

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 October 30, 2010 by Nic (see edit history)

[monsween]

That's a very informative post nic!

 

And it does tell you everything you need to know if you read it at the bottom

Edited October 30, 2010 by monsween (see edit history)

[Nic]

That's a very informative post nic!

 

Yeah I'm bored

[Dnk]

If you buy a uk spec you wont need the restrictor ring just scrolled across lol as nic said

[mawby]

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?

There is an entire section named "Parts required".

[Nic]

There is an entire section named "Parts required".

 

Borrox that's 10 minutes of my life wasted for nothing

[ScottC]

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?

Scroll down a little further