Jump to content
SAU Community

Recommended Posts

Ok. The said RB25DET takes pride of place between the strut towers of a 97 Stagea. Car was originally designed to be all show no go, but... stuff it. Lets go.

Im sure we've all sat down to figure what the best bang for buck performance upgrades would be.

Exhaust. - 3" turbo back. Probably a BATMBL or BOs Important dump, 4" (?) highflow cat., resonator for 3-4000rpm, cannon muffler, something with a decent note.

FMIC. - 600x300x76, with 2.5" Aluminium piping, Through GKTech.

Highflowed standard turbo. (would sell my working turbo, and buy a highflow.) Had my eyes on yours, alex- I knowll you'll be reading this.

Computer (not sure whether to go piggyback or full replacement)

Should i be upgrading injectors?

AFM? A Z32...?

Cams? Ive heard good things about Tomei Poncams. Adjustable cam gears....? just the exhaust, apparently...

Do i NEED a pod filter, or would a K&N panel in the factory box be adequate?

Does a CAI make a difference on an intercooled engine, seeing as the air is just going to get heated passing though the turbo anyway? Id like to keep the inlet tract as straight and short as possible.

post-24895-1158500678.jpg

For $5000 (give or take $1k) what would be the best upgrades? needless to say, slotted rotors and S2 calipers with greenstuff pads are on the way...

Hope i get some decent answers, ill leave you guys with it.

upgrade your brakes before you make it go any faster

ok thx read the post bwud.

Power Fc + Z32 AFM + Injectors

Theres approx $2500 gone

They arent exactly the first things you would do though, are they.... no...

I had looked at power fc's, and have used one with the commander unit in a 180SX, i like the thought of being able to make modifications on the fly, with the knock sensor etc, injector load readout and so on, but dont think they have one for the RB25DET auto...

first things would be intake (cooler/airbox and cai) then exhaust. beyond that the stock RB25 ecu is dodgy so some type of fuel/ignition controller at minimum is required, so pfc with z32 afm (if it can work with the auto) or perhaps a safcII/ITC combo. upgraded fuel pump is generally a good idea at this time too.

there are no suitable stand alone ecu's for nissan auto

So the best bet would be a piggyback system or similar? most places ive spoken to have changed the subject fairly quickly when it comes to the ecu, which is why i thought id post here. and they all had different ideas of what i should do first, which is what im after.

Say someone said "heres $5000 to spend on your engine". what would you do to it?

turbo back exhaust $800

generic intercooler kit $450

cai set up $300?!

bosch/walbro fuel pump $250

SAFCII/S-ITC $500

DBA slotted rotors $400

GCG Hiflow/2nd hnd HKS turbo (low mount, ie GT2535) $1500

turbo timer $100

EBC $400

Thats $4700, then add tuning on top of that, $2-300 maybe?!

thats a quick list, hope it helps.

Edited by _8OO5TED_

the problem is that auto gear logic is in the main nissan ecu and all stand alone engine management systems for nissan are manual, so it will be harsh the auto box. you need a piggyback system

I think the lack of Power FC for nissan autos is simply cos there isnt a big enough market. Most people modify manual vehicles. They may be thinking they wouldnt sell enough to be worth the research and developement? Ive read in the stagea forum that there may be something in the works, but i assume it would come at a premium.

What is a good piggyback system to use? GReddy e-manage or something? computers are one of many things in my "not my strong point" category...

ok, well if you go the BOS dump and cat, then a cat back 3" system you are looking at about $1000-$1500 for that.

then $400 for a cheap cooler.

anywere from about $1000-$2000 for a turbo.

for the ecu you have a few options. they all work out to be about the same money. they are a greddy emanage ultimate, pfc or safc2/sitc combo. for any piggy system you'd really want a remapped ecu to base it on so that you don't have rich and retard mode. that setup will give you the best driveability as it should be close to the standard gear change (unless it was altered in the remap). then using the safc2 you can alter the amount of fuel going in, and run a z32 afm.

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

    • Bit difficult to follow. Have a look below and see what the standard R32 layout was like. Note there was a restrictor in place immediately before "turbocharged pressure control solenoid" that, if removed, magically got you 1 bar boost.
    • I might be way off the mark here.. there must be a T junction under the manifold. That takes manifold pressure through a check valve prior to the T, one side splits out to this bleed off orifice, the other straight to the wastegate actuators. 
    • Carrying out some engine due diligence before my first drive in a 260RS that has been in storage for 10+ years, and found two lines that are susposed to be plumbed into the boost control solenoid. One of the lines (the wastegate boost supply line) to actuate the gates, had a bolt in one end blocking it. The other line (main boost signal line) from the very rear of the intake manifold (RB26DETT) and runs up to the boost controller had this pill in the end of it as seen in photos. Other than the obvious (T28 Ceramic turbos might well be cooked)  Can anyone shed any light on if there is any validity at all with this mod, bleeding a constant fixed rate of manifold boost pressure off through this 3mm hole?  Is it deliberate?  Was this a 90s Jap mod done to RB26's? Or has someone just fitted this without any idea of what happens to ceramic T28s if they are not gate controlled?    
    • This looks great! Awesome to have the 5 speed with an LSD in this. The Recaro's look like SR2's or SR3's. It's a shame they've been retrimmed as they would have looked sweet in their original colours. I think I'd want my agent to be a little more up front and informative too. I've never imported but I reckon it would make me a little nervous, so the more info the better.
×
×
  • Create New...