Bought A Hks 25-40 For My R33

[Dean_HR31]

Good afternoon,

Well I have done a search and not totally satisfied with the info i have recieved on peoples experience with the 25-40 as alot of it is related to people running it on the RB20's or on RB25's with half the supporting mods, so thought id start my own thread about peoples experience running this turbo with all supporting mods.

My motor is being rebuilt with forgies, gtr rods etc, 720cc injectors, pump, cooler, exhaust and the rest..

Will this turbo be laggy with a decent setup?? I will be running standard cams/heads with a microtech ecu.

Ive read through threads that this turbo is a little laggy but its mainly from people who arnt running all supporting mods or using the turbo on an RB20..

Im hoping for atleast 240rwkws and decent boost coming in from 3000rpm and onwards...

Any input on ur experience with this turbo on a well setup RB25 would be excellent.

Thanks

Edited April 14, 2008 by Dean_HR31

[R31Nismoid]

Its the worst turbo of the ball bearing brigade.

It makes a tad more peak power 2530, but with a much poorer midrange... so lag vs gain its not worth it.

Moral - the 2530 is the choice, then say a 2835 or similar, just skip the 2540 altogether, old design

[Dean_HR31]

The 28-35 turbo was out of the question as i want a turbo that looks standard. Do not want to replace turbo in the case of an EPA.

And I couldnt find a second hand 25-30 for sale... Do they also look standard in size like the 25-40??

Edited April 14, 2008 by Dean_HR31

[666DAN]

2535 ftw!

[swanny180]

Yes they do

[R31Nismoid]

The 28-35 turbo was out of the question as i want a turbo that looks standard. Do not want to replace turbo in the case of an EPA.

And I couldnt find a second hand 25-30 for sale... Do they also look standard in size like the 25-40??

2530's are the same, its the comp wheel thats different (and too big)

GCG hi-flow is what you should have purchased, perfect turbo for 250rwkw

Or even a GT-RS or one of the other good options on the market

[Dean_HR31]

Obviously though a GCG hi glow wont be of the same quality of a HKS turbo!??

I want something reliable as my engine is costing me alot of money...

Ive heard nothing but excelent reliability from HKS turbos...

[R31Nismoid]

No turbo is less reliable than the other really.

They all use the same cartridge - Garrett ones

GCG hi-flows i know have been running for 2-3 years now on a few cars, no issues. Same as HKS items.

[R338OY]

I think R31 Nismoid has provided the answers you seek.

I'd be rethinking the turbo setup, and refund policies at HKS

[OZ_Pomy]

2535 ftw!

+1

Love mine very responsive easily achieves the 240rwkw target your after and yes they can be hard to find.

Edited April 14, 2008 by iLEC

[NYTSKY]

I agree with Nismoid.The GCG or similar would be the best option.I had a BB highflow in my car,ran 250rwkw all day on 16psi.Looks identical to a stock turbo(0P6 housing).

[Dean_HR31]

Can i just have someone confirm that the HKS 2530, 2535 & 2540 all look the same - stock size turbo looking..?

I am planning to put the heat shield back on with this turbo....

Thanks

Edited April 15, 2008 by Dean_HR31

[limpus]

Yes...they are all similar to the stock turbo size...and heat shield will go back on...

[ix9]

Another HKS 2535 thumbs up here

[Dean_HR31]

Is the 2540 really that bad??? To the extent where i should now sell it to find something else??

How laggy is it?? They a make a bit more power than the 25-35 correct?

[limpus]

Just whack it on...and whack some decent boost (18psi onwards) into it...and it will still make you smile...guaranteed...

[R31Nismoid]

Until ya get in a car with a 2350 or a 2535 and then you'll be sad panda

[joeyjoejoejuniorshabadoo]

if you search enough there seem to be a few people that have overcome the dreaded 2540 lag... its all in the mods...

go to race pace

[Dean_HR31]

Can u show me a few links? What mods are u referring to??

I havnt found any threads regarding that...

[joeyjoejoejuniorshabadoo]

dont remember exactly... but when i was offered one at a good price i searched heaps and found a few people getting 3k ish full boost in a loaded gear