6 replies to this topic

[nettkonge]

Hi going to upgrade my 97 jdm gt-b at turbos to vf32 and vf33 and i want to referb the turbos bifor i put them in may car but i wonder wat eles do i need to do to make them work good i looking for a new ecu but not found one yet. Eny info on haw to make it work i be greatful for

[Robbks]

Don;t bother,

Save up your money for a single turbo conversion.

A Manual 97 JDM GTB is plug n play with a V3/V4 STi ECU with about 3 minor wiring loom changes
it is the cheapest and easiest conversion to perform

remove twins and exhaust,
block the primary oil and water feeds

bolt on a proper turbo and exhaust
swap over the Y-pipe to the intercooler from a single turbo model
plug in ECU
turn the key
 

[Jimbo]

Ive done this mod before. The vf33 primary has a bigger snout and outlet so you have to make a hybrid intake to suit. A vf26/27 combo will drop in with no modifications required.

[LukeFranky]

Why change turbos? Are some better than others?

I've got a weird mix. Stock primary and a VF13 or VF21, whichever is the secondary of the pair. I blew the primary of the pair and had to rebuild the old stock one.

[Jimbo]

They are mostly similar but the later VF32/33 had a better compressor/turbine spec and was the cream of the crop. There were also changes in turbine housing sizes and design throughout the TT life.

To be honest, I had a whole bunch of mods at the same time running on the stock ECU. I wouldn't recommend it.

As for ECU to the OP, you might have to trawl through Japan auction sites and find a "chipped" one such as a ZeroSports. Usually have a sticker on the ECU. 

On the whole, I think the Gen2 GTB ECU is sensitive to mods which is why I kept chewing through engines. I had a full TBE exhaust, full intake and hybrid intake tract, VF32/33, parallel fuel rails and rising rate FPR, lightweight fFidanza flywheel, custom up-pipes and the list went on.

If I could have gone back in time, I would have just replaced the old stuff with OEM equivalents and enjoyed the car in it's factory fit out. 


TT's are best enjoyed stock with a bit of an exhaust.

[nettkonge]

Aa thanks for the fedback. i haw alredy got the turbos so i ges i wil get them in the car and see haw it gos.i know mines deliver ecu for the gen2 but ar not esey to combay.the car haw don 165000 km so the turbos ned a referb eny way

[Morgan]

Don;t bother,

Save up your money for a single turbo conversion.
 

No