Advice Needed In De+t

[Benjamin_John93]

So i have been collecting parts needed to do a turbo conversion on my r34 rb25de Neo for quite some time now and am keen to go ahead with the conversion.

I have:

-R33 turbo

-R33 turbo manifold + dump

-R33 SMIC + piping

-Braided water lines/banjos

-Braided oil line/banjo + oil retun

-Boost Tee, boost gauge.

I wanna know if i can run 5psi max with the stock rb25de Neo injectors, fuel pump and N/A ecu?

It seems every conversion i have seen has been done different, the setups i have seen so far are:

1) N/A injectors, N/A ecu, walbro fuel pump. Boost at 5psi

2) 370cc injectors, Gtt ecu, N/A fuel pump. Boost at 5psi

3) 370cc injectors, Emange blue ecu, walbro fuel pump.

So can i convert my rb25de Neo to a turbo using the N/A injectors and fuel pump if i dont go over 5psi?

Edited January 9, 2016 by Benjamin_John93

[GTSBoy]

So can i convert my rb25de Neo to a turbo using the N/A injectors and fuel pump if i dont go over 5psi?

Seems pointless to go to all that effort, only do half the job and limit yourself to 5 psi, even if it IS possible. Why not just throw the NA injectors and ECU in the bin where they belong, install turbo injectors and a TUNABLE ECU and run 10+ psi and enjoy life?

[KiwiRS4T]

I'm not sure that the DE Neo head is a good candidate for +T but leaving that aside why didn't you get an R34 SMIC and turbo? I'm not even sure the R33 manifold will bolt to the Neo head but could be wrong.

Do you have an auto or manual?

If you have a manual I would suggest an R34 ECU with a Nistune chip.

If you have an auto sell the car and buy a GTT.

It looks as though you haven't read many of the DIY guides on +T

Do some more reading and Googling and you may decide to just buy a GTT

[admS15]

+1 for sell everything and buy gtt = winning.

[Ke55pig]

All turbo manifolds will fit no issue

Go turbo injectors turbo ecu with nisstune ecu get it tuned about 800 for chip n tune then u can run 10+ psi be supper responsive as the na neo is nice n hi comp also has hi smaller ports which will help heap down low build it n have fun with it

[Benjamin_John93]

I understand that if i wanna run 10psi+ i need to change the injectors and ecu, but what about the fuel pump? Surely that needs to be changed also right?

I might go down that road later on but for now i just wanna know if i can run 5psi with n/a injectors, fuel pump and ecu?

[Ke55pig]

U can do it safelly dunno. Pump will be fine

[AngryRB]

I can help with a set of 34neo injectors cheap as

[Benjamin_John93]

So the standard NA pump would still be fine for the 10psi setup?

[Dose Pipe Sutututu]

So the standard NA pump would still be fine for the 10psi setup?

No, just sell car buy GTt, win x10

[Ke55pig]

It will be fine for a untuned 5 as the ecu will run the car lean and probaly not suply enough fuel anyway and timing map be all wrong

[Piggaz]

Been said before and will be said again. Sell the car and buy a GTT. That's it. Don't f**k around, don't try make things right. It's like you're spending money to go backwards.

Take the advice!!!!

[Benjamin_John93]

I dont wanna sell and buy a gtt as i got my r34 for alot lower then the average market price and have grown attached to it.

Well if the n/a pump and injectors are fine for 5psi ill buy a piggyback ecu and get it tuned to stop it from leaning out, right?

[admS15]

Been said before and will be said again. Sell the car and buy a GTT. That's it. Don't f**k around, don't try make things right. It's like you're spending money to go backwards.

Take the advice!!!!

This.

[Trex]

I dont wanna sell and buy a gtt as i got my r34 for alot lower then the average market price and have grown attached to it.

Well if the n/a pump and injectors are fine for 5psi ill buy a piggyback ecu and get it tuned to stop it from leaning out, right?

we all grow attached to our cars but by buying a gtt you get better brakes, better engine, etc.

sell your gt for a profit and buy a clean unmodified gtt and be in front. It will cost more to get your gt turbocharged.

You will be very disappointed with only low boost with no room to move.

[Piggaz]

It's not only the engine.

The lower spec brakes

The RB 20 box (IIRC)

Inside the list goes on.

Cut losses, save and buy a better car.

Buy the best car you can afford and work from there. Don't buy the worst car and make it up!

[SMiTHBRo]

I think the main problem with achieving 5psi is that the RB25 actuator is set to achieve ~7psi minimum?

At least run an adjustable FPR and give it a bit more juice....but ideally you should get it on a dyno asap to confirm the mixtures are happy.

[SMiTHBRo]

Also do whatever you want it's your car! NA+T setups are epic fun to drive ?

[GTSBoy]

I think the main problem with achieving 5psi is that the RB25 actuator is set to achieve ~7psi minimum?

At least run an adjustable FPR and give it a bit more juice....but ideally you should get it on a dyno asap to confirm the mixtures are happy.

No, it's actually a 5 psi wastegate and the boost control solenoid bleeds it up to 7.

[Ben C34]

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