Jump to content
SAU Community

does APEXi make Power FC for RB25DE?

mmmskyline

By mmmskyline,
in Engines & Forced Induction

 Share

Recommended Posts

mmmskyline Apprentice

mmmskyline

Posted
Posted

hi all, i'm contemplating on a turbo conversion on my r32 gts25, to date the engine mods on it are, tomei cams, 6:2:1 aftermarket extractors, 2 1/4 inch exhaust all the way no CAT, i'm thinking if i turbo the car i would like to use Power FC, but i'm told that Power FC only made ECU for specific engines, eg. RB25DE or RB25DET

I will probably be using a r34 gtt turbo, and manifold or maybe custom made manifold, how much boost can these turbos handle? I'm wanting around 1 bar, would i need to get the turbo modifed for steel compressor wheel for this boost level? if so this would in turn tend to lag a bit, this brings me to my next point of compression ratio and forged pistons....

I also have a few questions about the compression of RB25DE, they are 10:1 from factory, I'm thinking of keeping it the same compression is this ok? if i were to use good aftermarket forged pistons which are made to suit 10:1 would that make it much better for the engine, I also noticed that the factory compression ratio of a RB25DET is 9:1, is there 'that' much of a great difference in this? 10:1 and 9:1 is only 1 off.

any advice would be great, thnx in advance

Link to comment
https://www.sau.com.au/forums/topic/26807-does-apexi-make-power-fc-for-rb25de/
Share on other sites
skyla Community Regular

skyla

Posted
Posted
Originally posted by mmmskyline

I also have a few questions about the compression of RB25DE, they are 10:1 from factory, I'm thinking of keeping it the same compression is this ok? if i were to use good aftermarket forged pistons which are made to suit 10:1 would that make it much better for the engine, I also noticed that the factory compression ratio of a RB25DET is 9:1, is there 'that' much of a great difference in this? 10:1 and 9:1 is only 1 off.

you can keep the compression ratio 10:1, but you can only run relativly low levels of boost, I might be wrong, but I think it was about 8psi tops, any more boost and you start running into problems.

Nismodified Proficient

Nismodified

Posted
Posted

i think the stock CR for a turbo is 9.5:1, stock is 10:1, as said by skyla.

and yes, it is a fairly big difference, responsiveness is affected. Think of a turbo car in its lag range, thats what it would be like.

SOrry to go off topic, but can you give us any information about your tomei cams likes cost, dyno sheets, the impressive it made on you etc..

geordie Proficient

geordie

Posted
Posted

yeah im keen to hear what sort of power gains you have made out of those cams. You got same car as me lol, yours 4dr or coupe, mines coupe, i plan on doing a few n/a mods, get the power up a bit. So yeah same q's as nismodified, cost, power etc. Cheers

mmmskyline Apprentice

mmmskyline

Posted
  • Author
Posted

most of the performance mods were done by the previous owner of the car, who used to be in SDU also, so i think u'll have to ask him, he's kennydead on SDU forums

i think he told me he scored those tomei cams for free, coz he has a mate in japan who works around tracks or sumthing, and when the japanese go race or drift the cars, and sumthing even remotely 'out of tune' they'll throw sum of the near new parts away, these tomeis had only been used for a few laps so i'm told, and they threw it out, so his mate asked him if he wanted it, suits the RB25DE lol,

dyno, i think it made 110rwkw last time dynoed, not sure if that was with all the mods currently on it, but yeah, very smooth driving at the moment.

he's also currently doing a project car, r32 gts25 also , turbo'd it with garret t04E ( i think), steel compressor wheel, running standard 10:1 CR, very responsive, very quick, he says with a good tuner the CR can be kepts high

mmmskyline Apprentice

mmmskyline

Posted
  • Author
Posted
Originally posted by geordie

yeah im keen to hear what sort of power gains you have made out of those cams. You got same car as me lol, yours 4dr or coupe, mines coupe, i plan on doing a few n/a mods, get the power up a bit. So yeah same q's as nismodified, cost, power etc. Cheers

me coupe as well, got full GTR body kit with the GTR wing as well, gunmetal color :(

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • joshuaho96
      How much roughly to convert stock r32gtr to single high mount turbo + ecu and tune

      By joshuaho96 · Posted

      -9s are discontinued supposedly. But you can still get Nismo R3 turbos which are something like a -7 but subtly different? -7s are also available. HKS GTIII-SS and GTIII-2530 are also available but they're journal bearing MHI turbos.
    • Butters
      How much roughly to convert stock r32gtr to single high mount turbo + ecu and tune

      By Butters · Posted

      Late to this party but here is your go to shop in perth - https://www.facebook.com/gsautoworksau GTSBOY is on the money cost wise, drive in and out will cost you 15-30k or more.    Some items that will save you money  - plug in link ecu g4x is much cheaper than haltech.   -Pulsar turbo, seem to be "OK" now, never used one myself You really don't have to build the motor, E85, headgasket, studs and a good RB26 will live for ever.    Swapping over the twins won't save much as you still need ecu, tune, fuel system etc.          
    • Shoota_77
      Returning Member

      By Shoota_77 · Posted

      Welcome back to the scene! Godzilla Motorsports were well regarded back in the day.  My GT-R had work done there prior to my ownership.   SRS (Street Race Solutions) in Toowoomba worth a look.  They've built some pretty wild Skylines. Their YouTube channel is comedic to watch!  I'm sure they're all on the glass BBQ but they get shit done! 🤣
    • sonicii
      Rv37 400r questions

      By sonicii · Posted

      Hard to say what the extra connector is, it looks a bit like a coax type connector, so possibly a separate radio/GPS antenna, or even another camera input?  The V37 series (including the Q50), did go through a model refresh in 2020, since Australia didn't get any Q50s newer than 2019, we didn't get any of the refreshed models, so there could also be other unexpected problems to overcome to swap an older Q50 head unit into a new model V37. There probably aren't too many people around that have made these sorts of changes to a Q50/V37, so you might end up being the first if you do decide to go ahead. ACP is Apple Car Play and AA is Android Auto, they are roughly the same thing for the 2 major phone operating systems (Apple's iOS and Android), it allows you to connect your phone and access a number of your phone applications on your car system.  With Nav apps included, so you could use google maps/Waze or whatever your favourite navigation app is, instead of using the built in navi system.  I think this would be a better solution if it is only Navigation that you are looking as swapping the head unit for. GPS signals are the same around the globe as the GPS satellites continuously circle the globe, but it is the head unit that doesn't allow you to load Australian maps, or at least no-one had made an Australian map that will load up on the JDM head unit. Regarding the TV standards, I assume you are referring to the AV inputs?  I haven't ever tried to use them, Japan used a slightly modified version of the US NTSC system, and Australia uses PAL for composite video, that said, I wouldn't be surprised if a video input could work with either system.  That is mostly irrelevant here though, unless you plan to use those inputs for something?
    • admS15
      How much roughly to convert stock r32gtr to single high mount turbo + ecu and tune

      By admS15 · Posted

      If you've got bucket loads of $. Go single. If not, just upgrade the twins, Garrett -9's or whatever the current equivalent is for a healthy 350awkw and leave it at that. Will probably still cost you 10k to do in this day and age.
×
×
  • Create New...