Jump to content
SAU Community

Recommended Posts

took my car in for a tune, the lowest i can set the boost was 19psi :S

im running a hks2535.. n im chasing around 16psi...

what would be the best option for internal wastegates? would a stock rb25 wastegate work or will i have to go aftermarket?

id love to go external gate but right now its to expensive for me, student life sucks =(

Link to comment
https://www.sau.com.au/forums/topic/229008-hks-actuator-min-19psi/
Share on other sites

What dump pipe are you running on the 2535? Had that problem with a generic split dump at forst on my 2535 as the wastegate flap was fouling the dump and not opening properly...another possible cause is a sticky/lazy wastegate spring...and yes...check the obvious by adjusting the wastegate rod...this will allow you to check if the flap is fouling as well...

but i would have thought aftermarket dump = more boost?

It does give you the potential to make more boost as it should be larger and flow better. The wastegate controls boost by bypassing exhaust gases around the turbine. If the wastgate flap fouls on the standard dump pipe it may not open far enough to bypass enough gas. If the gases can't go around the turbine they have to go through and it will just produce more boost.

  • 3 weeks later...
DjeMz, did you end up sorting this boost issue? I'm running a GT-RS with the same issue but I have a 3" bellmouth dump already. Adjusting the preload didn't help..

When the car got tuned what did the boost pressure graph look like? What power did it make?

EDIT: Just found your thread so ill post in there.

Edited by PM-R33
rb25

hks2535 - 18psi - running boost off actuator

Standard Internals

Standard AFM

Standard Injectors

GTR fuel pump

apexi n1 cat back exhaust (i know i know, i should really change my dump/front/cat)

arc airbox

237kWs @ 18psi

dynoula220708.jpg

thats what she made...

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

    • Hey all, not sure how active SAU is anymore but will ask away anyways. Just wanted to get some experience on the 2008 model GTR CBA model.  I've hit that age in my life (43) where I'm like fk it time to get my dream (midlife crisis) car. Looking at importing one in and seeing if these can be reliable if the main flaws are fixed up. Plan is to keep money aside to do the following straight off the bat to future proof it: * install a stage 1 rebuilt trans with all new bits and pieces.  * install a new Bellhousing from the later model GTRs. Or potentially an upgraded stronger version like MAD or ATR. Besides the above two things and typical maintenance items anything else you'd recommend doing.   Been speaking to a few people and the engine on these are very reliable apparently. But keen on the view of the community here. Hoping to find a nice grade 4.5 with low mileage in Grey. I'd go black but swirls too easy. Look forward to your responses and feedback. Cheers    
    • Do Alan and Keith work on Skylines now? I remember buying stuff from them when I owned my Ralliart Lancer a few moons ago. Definitely genuine guys and be excellent if they dealt with the skyline platform as well.
    • Hey all, I'm Gaston from Sydney's West.  I was a member on here when I was a younger lad and owned a mint R33 GTS-T. Ended up selling it and getting married having kids (yadda yadda) we all know how the story goes. Now I'm back with the intention to get my midlife crisis (dream) car ... a R35 GTR.  You'll see me about asking questions and searching the forums. Good to be back and can't wait to get back an Import again.
    • I have to put something here in order to post the photos. From what I could gather there's more enthusiasm for modified cars now than there has been for years. There were probably more younger people there than older (me included lol) which was a good sign.  It did seem like the record least amount of representation of the 90's era hero cars on display though. Like maybe one or two examples of S-chassis Nissans, and maybe 3 or 4 R-chassis. By comparison there were a lot of Civics from that era but in all there were about 10 - 12 EG/EK Civic Type R.  Euro exotics are always there in large numbers, led by Liberty Walk...... say what you will about kids using markers to scribble on a Ferrari F40, it did seem like a stunt to infuriate Ferrari enthusiasts, or Ferrari itself. I wonder if there's something more to it. Either way LBWK have done some heinous things to a Lamborghini Miura this time. They should stop now.
    • Engines and drivelines are not war stoppers for me mate, busted arse bodies and un-obtainium parts and panels are though Both cheap Brumbies I looked at had trashed tubs and a fair bit of rust
×
×
  • Create New...