Jump to content
SAU Community

Recommended Posts

im having a bit of difficulties trying to pick which turbos to upgrade to

(yes ive read/searched the forum)

BUT i'm just wondering which turbos YOU would personally go for if it was your car

supporting mods for the R34 GTR (street use)

(currently making 269rwkw on stock turbos)

HKS turbo back (split dumps, front and catback, deCAT)

HKS adj cam gears

HKS 600cc injectors

Tomei poncams 264/264

Pfc

Pfc boost control

Bosch 044

Apexi intake pods (stock AFM)

Nismo twin plate clutch

*edit* Nismo AFMs to be added

If im aiming around 330-350kw atw, do i need any other supplementary mods?

Any advices/feedbacks (no flames) are appreciated

Help out a newbie

Cheers,

:blink: good to see the forums back online

Edited by andz69
Link to comment
https://www.sau.com.au/forums/topic/167907-hks-2530-or-hks-gt-rs/
Share on other sites

  • Replies 78
  • Created
  • Last Reply

Top Posters In This Topic

I would go GT-RS because they are just awesome like your current mod's list going into a turbo upgrade.

Although it is a common Stage 2 addition to get twin Hks 2530's. Can anyone with a GTR with these turbos please comment?

Edited by Pauly33GTS-t

- AFMs will be maxed out before you go past 315kw.

- It is not guaranteed but it is possible that your coils will fail immediately or after running a short time over 300kw

So in my opinion add splitfires and Nismo AFMs to your list.

Alternatively you can go Z32+Adapters AFMs but you'll need to set the intake piping up to suit the larger diameter AFM bodies.

As for the turbos - GT-RS's all the way.

To be honest though on a stock bottom end I would chose GT-SS's and save for a forged rebuild before going to the GT-RS's. Then you can go nuts with what you already have and sell the SS's. That's just me though I prefer to be ultra conservative.

Yeah, he will need bigger AFM's, You are looking at around 500 for 2 Z32 AFMs Andy, then 3,700 for the turbo's (GT-RS) then a tune from Shaun (~400) then you may need a rebuild with forged internals... Stage 2 for you...

If you get GT-RS you'll hate them on a 2.6L engine. It will be lag city. I bet you'd change them not long afterwards.

You should either be considering GT-SS (more response - less power) or the 2530's (more power - less response)

forgot about AFMs

i have apexi pods (76mm), so changing to the Z32 pairs..id need to change my apexi intake pods

im quite aware of the "lag city" in the RS, but i like the power they deliver

wondering wat rpm do they come on? 5000?

what about fmic? will i be ok with stock ones? i think theyre 600x300 x60-70?

Edited by andz69
forgot about AFMs

i have apexi pods (76mm), so changing to the Z32 pairs..id need to change my apexi intake pods

im quite aware of the "lag city" in the RS, but i like the power they deliver

wondering wat rpm do they come on? 5000?

what about fmic? will i be ok with stock ones? i think theyre 600x300 x60-70?

You've got a twin pod set up then?

2530s are still available new from HKS.

I would go the 2530s or even SS.

as for AFMs, nismo AFMs will fit to your current Apexi intake kit.

as for what RPM RS come on, search through Blitz's posts, he is running RS on a 2.6litre RB26 and posted a graph recently.

2530s are still available new from HKS.

I would go the 2530s or even SS.

as for AFMs, nismo AFMs will fit to your current Apexi intake kit.

as for what RPM RS come on, search through Blitz's posts, he is running RS on a 2.6litre RB26 and posted a graph recently.

i did have a look at the SS, but they're not much of an upgrade from the stock turbos, thats why i tend to lean towards the 2530s and the RS'

Umm nismo AFMs?...arent these 80mm?

my pods are for standard 76mm AFMs, do they come with adaptors?, nice to hear, i'll have a look at them.

Thanks beer

i did have a look at the SS, but they're not much of an upgrade from the stock turbos, thats why i tend to lean towards the 2530s and the RS'

Umm nismo AFMs?...arent these 80mm?

my pods are for standard 76mm AFMs, do they come with adaptors?, nice to hear, i'll have a look at them.

Thanks beer

We changed from 2530's to GT-RS turbo's and made only 15kw more and had to rev the thing 1000rpm harder

the turbo's and a retune were the only thing that changed.

the GT-RS turbo's require a lot of other changes (capacity, headwork etc) to get them to perform

you must remember they are the airflow equivalent of a HKS T51R KAI (well almost)

If you get GT-RS you'll hate them on a 2.6L engine. It will be lag city. I bet you'd change them not long afterwards.

You should either be considering GT-SS (more response - less power) or the 2530's (more power - less response)

This seems to be a common myth

I switched from GT-SS's on a 2.6 to GT-RS's and im very happy with them.

IMHO with a tuner that knows how to set them up for street, they can be a very good package - Sure they are larger and therefore lagier than GT-SS's, but CRD did a great job optimizing my car for street performance with my existing 260 degree poncams and the GT-RS's on a built 2.6 bottom end.

Nismo AFM's are stock size, and similar voltage curve to Z32. I have a pair, and a stockers airbox. They'll fit fine

learned something new

We changed from 2530's to GT-RS turbo's and made only 15kw more and had to rev the thing 1000rpm harder

the turbo's and a retune were the only thing that changed.

the GT-RS turbo's require a lot of other changes (capacity, headwork etc) to get them to perform

you must remember they are the airflow equivalent of a HKS T51R KAI (well almost)

a very constructive reply, thanks

i'll keep a note of that, 2530s are popular in the 'RB26 forced induction' for a reason

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Brooooo Please send ABS control unit schematic Please! R33 gts25t ABS (Its two plug ecu, black and white) wire colors possible? [email protected]
    • Don't even try to run it on the stock ECU if you're going to have the boost controller bring boost above ~10 psi. I've already told you that. If you use the Nistune ECU, you will need to CAREFULLY read the available documentation for Neo tuning, and read some threads on the Nistune forums, to discover the various things you have to do to prevent the ECU from going bananas when the boost is too high. The is a table associated with th boost sensor that must be modified to prevent it from shitting the bed. This is just one of the things that you will need to do to the tune in Nistune, because the Neo turbo ECU will be expecting to see a number of things (such as the TCS) that are not there, and you have to block the DTCs on those. It is totally not surprising to me that you are having the problems that you are, but the solutions to these problems have been known for >15 years. So just get it done.
    • Hi. Sry iam not a mechanic and iam not at the car atm so i dont know 100% but they told they measure those and even try to change those. AFM they have two. Coils are new a they have my old one too. Plugs too. ECU...we have 25 NEO stock and Nistune 25 NEO.   But i dont know if any one those could be the problem and why/if/what can cause this, Only thing they did not check is fuel...but that walbro 255 is new(like 1,5 years)... That fuel pressure gauge idk...but i let them know Any suggestions?   EDIT: how can they know if it is like you say he ECU pull power when it reaches a specific boost level that is too high? Tha car has boost controler
    • Can you clarify what you mean by boost cut, do you mean it misfires both when under load (driving) and when stationary and out of gear? Or does the ECU pull power when it reaches a specific boost level that is too high (boost control issue)? Does it occur at idle with no throttle? When you say "the ECU is OK", what ECU is it and why do you think it is OK? Have you used the NEO ECU, and if so do you have a MAP sensor attached? Same for the AFM, why do you think it is OK? Do you have any way to put a fuel pressure gauge on it (even just a mechanical one between the fuel filter and fuel rail)?
×
×
  • Create New...