Jump to content
SAU Community

Recommended Posts

Ok.

Currently have:

PFC + 10psi + R34SMIC + 3" turbo back exhaust (not split dump)

This with a tune gave me 172rwkw with a nice smooth power delivery. (dyno is meant to be conservative also)

I have sourced a GCG high flow turbo. I'm thinking that 220-230rwkw will be adequate for me.

I'm wanting to hold a fairly tight budget.

I have a nissan patrol clutch - hopefully that will hold up.

So extra mods to reach the 220-230rwkw??

1. FMIC - Hopefully the same sided entry type, to allow easy fitting

???2. Injectors?? - I think the stockies will be at around 90% duty cycle at this power level?? - from peoples experience would this be ok? I know you can get a rising rate fuel reg but think this may be a pain to play with..I guess S15 injectors are an alternative

?? 3. Fuel pump - my stock one showed no signs of fading out up high in the rev range. can 230rwkw be had out of the standard pump? Is a 2nd hand R33/34 GTR pump a direct fit and much better?

Will I need around 15psi to get this power level? I would like to avoid adjustable cam gears and replacing the exhaust. Would a split dump really be required. I have a 3" bell mouth type..

Thanks for your help.

I assume 220-230rwkw would be a fair improvement - without the worry of the turbo wheel spinning off..

Edited by benl1981
Link to comment
https://www.sau.com.au/forums/topic/154786-stage-2-mods-r33-rb25det/
Share on other sites

If you currently have a PFC + Boost controller + Full 3" exhaust +GCG high flow... you need:

- Split dump/screamer front pipe (10 - 15rw/kw gain over 3" bell mouth)

- Z32 AFM

- Deatschwerks 555cc injectors ($555 delivered)

- Walbro intank pump ($300 supply & fitted) or Nismo/Tomei ($370)

- CRD/Just Jap FMIC kit ($350)

If your engine & turbo are healthy + decent tune then you should be seeing 240 - 260rw/kw

Cheers

FMIC: If you want to keep with "same sided entry type" i would suggest going for a Blitz LM fmic kit from nengun, they use the stock return pipes, i think they cost somewere around $1000 which is about twice the price of a cheap chinese intercooler kit which would problly do the same job as the blitz kit.

Injectors: The stock 370cc injector have been used for a few 230rwkw cars on this forum that i have read about, if you decide you want to make more power go for the nismo 555cc injectors, they are a straight bolt in injector and dont require any plug or fuel rail modifications.

Fuel Pump: I wouldnt use the standard pump for anything over 200rwkw, most people replace the fuel pump for good reason when they have fmic,full exhaust, 10psi etc etc, they seem to get tired pretty quickly and cant pump enough fuel, i would replace it with a nismo or tomei fuel pump as they are both once again and full bolt in replacement and both come on there own bracket,filter bag and all the other bits and peices, which means to dont have to muck around with modifing things like you would have to if you went for a bosch or a walboro pump (stay away from these)

The 3" bellmouth dumpipe you have sounds fine (depending on who its made buy ofcourse), i wouldnt bother going out and spending more money on a split dump, i too will be going for a 3" bellmouth style dump/front pipe made by Unique Autosports.

But if you only want to reach around 220-230rwkw then the mods you have listed are pretty much spot on, it should make that power on about 12-14psi depending on the condition of your motor ofcourse

Good luck reaching your goal >_<

Edited by nizmo_freek

Thanks for the ideas fellas.

I believe the Rb25 AFM is good up to about 240rwkw...from what I've been reading so I don't plan to replace that

So you think the injectors may handle around 220-230 rwkw..what duty cycle should I expect?

Edited by benl1981

stock afm and injectors will be ok for 240rwkw

they will be on border line but should be ok

fit a fuel pressure reg so you can squeeze a bit more out of the injectors

make sure you replace the stock fuel pump too

you might get 220 - 230rw/kw out of the stock injectors but you will need a rising rate FPR and your duty cycle will be close to maxing out... I dont recommend you max them out too much otherwise you will be looking for an engine rebuild...

Strongly recommend a Z32 AFM over the stock..

For Injectors ($555) + Z32 AFM ($250 - $300) will unlock approx 20 - 40rw/kw with a high flow GCG + tune...

Do it once, do it right or dont do it at all...

Cheers

  • 2 weeks later...

I would think you'd pretty close with just a tune/boost increase and a FMIC. AFM bypass is a good cheap way to flow more air while still metering accurately also. Issue 318/319 of autospeed.drive.com has a good article on it.

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

    • For these last 7 years of ownership, I've always had to use a small scissor jack under one of the front tow hooks to raise the front just enough so my low-profile jack fits under to reach my subframe jack point. I'm beginning to get annoyed of always having to do this. Are there any lower low-profile jacks that fit under the gtr lip on a dropped car?
    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
×
×
  • Create New...