Rb25 Det Neo Safe Boost Presure

[Addicted2BoostR34]

every one has diff ideas on safe boost for a rb25 det neo

my car mods are

the HKS gt-rs turbo kit

steel head gasket

head re-grind

full top end stud kit

hks timeing belt

pro cool intercooler

hks pod filter

440 fuel pump

full engine flush

new belts all around

hurricane custom 3inch sports exhaust ( cat and cannon )

after market radiator

split fire coil packs

hks elec boost controller

if i remember the other mods ill post

but im lookn at running about 15 psi on high and maybe 12 low waiting too see what the lowest the actour can handle

any help would be nice about this subject ((( or should i just run like 13 daily))

anyone whith this kit let me know what ur running and mods

Edited May 30, 2011 by Addicted2BoostR34

[Lithium]

What ECU and injectors will you be running? So long as the fuel system and tune are up to it - 15psi should be no sweat on an RB25.

[Shazza24]

The safe boost level that you are probably referring to, is if you have standard turbo....

After that is replaced with after-market turbo(steel wheels) the problem is now safe power level for engine output (kw).

May as well tune & run 20psi(or whatever the highest boost efficiency range is) , then use your right foot to achieve desired boost.

Edited May 30, 2011 by Shazza24

[boostn0199]

Most people go up to about 18psi on stock bottom end pretty safely.

[PM-R33]

Boost pressure has nothing to do with "safe limits" on an engine.

10psi from a T28 is a lot different to 10psi from a T88.

As has been said, the only reason people refer to safe limits of boost pressure is on the stock turbo.

Your HKS actuator on the GTRS is a 1bar item so the minimum it will run is 1bar. They run out of puff at around 19-22psi dependent on engine.

But +1 on what ECU are you running? Please don't say stock.

[75coupe]

440 fuel pump

So your running with diesel fuel?

cause the bosch 440 is a diesel fuel pump isnt it????

[Addicted2BoostR34]

stock ecu as im still not sure wat one to get my tuner would like me to get the vipec ecu.. but i like the Fcons with hand controller

maybe even a nistune ?:S

as for fuel pump i ment the 040 in tank fuel pump

the 440 is the inline version

injectors are stock as im going to do them at the same time as the ecu

my plan was to get the gt-rs turbo on run it at min bar ..

get the head cleaned up

upgrade the pump

timeing belt exc

get some forged items in her belly do supporting things water / oil pump then once thats all done lookn into tuneing and injectors 2 match

i drive this car f*k all its a long term thing for me

[Hanaldo]

Whyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy?

ECU first, I don't understand why people avoid this lol.

[75coupe]

the 040 pump will be fine for the gtrs, the 044 is the external pump your thinking of...

the vipec ecu seems good from all accounts and so is the nistune but the Fcon is harder to find a tuner for Ive heard, if you want a hand controller go the powerFC, but at the end of the day get what your preferred tuner has the most experience with and recommends...

you say you have 'hurricane custom 3inch sports exhaust ( cat and cannon )' tell me you will have a 3 or 3.5" dump as well....

I wouldnt even worry about a pod filter just run the std airbox with a decent hiflow panel filter or an arc airbox... pods are ghey imo.

Im assuming you meant 'cooling pro intercooler'... yeah.? never heard of a pro cool one...

with injectors keep in mind that E85 is around more and more and to run it you need 30% more fuel flow, more power, less detonation more timing...

[Lithium]

Well listen to your tuner imho, a Link (or vipec, much of a muchness) in terms of ecu. Until you do that I basically wouldn't drive it

[75coupe]

ECU first is the best, I had just a 3.5" turbo back exhaust and a PFC and it drove completely different to my friends stock 33...

[R31Nismoid]

Yeah ECU first pretty much in all instances.

Without it, forget running more than 7-9psi as the ECU will simply have a fit, not to mention you need injectors.

Have you even read the "what mods to do first" thread?

The RB25 dyno sticky?

You'll soon notice if you read every GT-RS thread, what the minimum requirements are.

[PM-R33]

If your tuner wants the Vipec then go for it. Fantastic ECU and you will not be dissapointed.

Don't worry about half the stuff you listed that you want to do. Get the injectors and ECU done first.

[Addicted2BoostR34]

the 040 pump will be fine for the gtrs, the 044 is the external pump your thinking of...

the vipec ecu seems good from all accounts and so is the nistune but the Fcon is harder to find a tuner for Ive heard, if you want a hand controller go the powerFC, but at the end of the day get what your preferred tuner has the most experience with and recommends...

you say you have 'hurricane custom 3inch sports exhaust ( cat and cannon )' tell me you will have a 3 or 3.5" dump as well....

I wouldnt even worry about a pod filter just run the std airbox with a decent hiflow panel filter or an arc airbox... pods are ghey imo.

Im assuming you meant 'cooling pro intercooler'... yeah.? never heard of a pro cool one...

with injectors keep in mind that E85 is around more and more and to run it you need 30% more fuel flow, more power, less detonation more timing...

yer 3" turbo back

pod was on it wen i brought it was thinking a nice metal fab'd one

and it would be 'cooling pro intercooler' that was allready on it wen i got it too ...

vipec it is i need to sell my bike and it will be done !!!

(injectors will be done wen ecu gets done ) so i will prob drive it like twice after the turbo goes on

i hae tryed 2 look for posts about the vipec but the button wont let me look it wont even find skylines

[Addicted2BoostR34]

If your tuner wants the Vipec then go for it. Fantastic ECU and you will not be dissapointed.

Don't worry about half the stuff you listed that you want to do. Get the injectors and ECU done first.

its all done once i sell bike ecu and injectors

YZF400 any1 keen

[simons987]

Consider the Nistune will be happy for what you want.

Edited May 30, 2011 by simons987

[Addicted2BoostR34]

whats a nistune cost i dont een knoe where i could get one.. if its above a grand i will just wait and get the vip ecu done then i wont have too change it later on

[simpletool]

You need a ECU, then the typical safe limit is 1.1bar, 17psi, 110000Pas, you choose.

[Simon-S14]

a neo can take whatever you throw at it provided its tuned.

mine has seen an overboost of 2.5bar on e85 and survived to run another day.

does 1.4 bar all day on the track in normal boost @ around 360 ish rwkw

[Addicted2BoostR34]

You need a ECU, then the typical safe limit is 1.1bar, 17psi, 110000Pas, you choose.

cheers thats all i was after ,just an idea guys

ill be getting a ecu very soon i think