Jump to content
SAU Community

How Much Power Can I Make?

Taxi33

By Taxi33,
in Engines & Forced Induction

 Share

Recommended Posts

Taxi33 Community Regular

Taxi33

Posted
Posted

Hey all!

I've got a r33 s2 with a few mods done to it already, just wondering what I'd need too do

too get over the 220 - 230kw mark.

I'm contemplating on whether or not too get a SAFC-II or just too get a stand-alone ECU.

Of course I'd prefer going the SAFCII due too costs but i also want too make sure that it's

possible and that I don't stress my engine too much.

From what I've heard the SAFCII can keep pushing power until your standard injectors max out.

How much power can standard rb25 injectors make?

I'm also thinking of getting a GTR fuel pump or a Bosch/walbro.

Anyone know what power the GTR fuel pump can handle?

Also does anyone recommend any fuel pumps for the power i'm aiming too make?

My current mods:

3" exhaust

FMIC

APEXi AVCR

Exedy button clutch

APEXi power intake

Slide Stage3 high-flow turbo

Thanks!

Samir :(

Link to comment
Share on other sites
  • Replies 40
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Posted Images

R33GOD Grand Master

R33GOD

Posted
Posted

your running a huge risk over 220rwk with stock injectors. for the sake of a few hundred bucks get them changed. better than 3k for a rebuild. And if you want to make over 230rwk get a stand alone ecu. much better. theres no cheap options when looking at that sort of power

cheers

Link to comment
Share on other sites
Taxi33 Community Regular

Taxi33

Posted
  • Author
Posted
alot of speculations on "stock" injectors, every seems to have different results my stock ones were light purple in colour, i made 258kw at wheels on them, use a bosch 040 pump,

Hey,

Thanks for the replys guys. :D

So you made over 250kw on stock injectors?

That's awesome.

230rwkw is around the max.

I would go powerFC over a safc as you will want to continue upgrading later

Yeah later on i was going too go for a standalone ecu

but i was thinking that if a SAFCII can handle the ammount of power

that i want for now, i'd go for it! Also if it's safe ofcourse.

Link to comment
Share on other sites
sweetr33 Experienced

sweetr33

Posted
Posted

it did lean out towards redline. car was never intended to make the power it did, i went to a dyno day for first time with new setup so had no idea wat the air/fuels or anything were doing, basically just said watch the air/fuels and it came up with that figure.. like others say though it isnt recommended, only reason i hadnt changed the injectors was i had no idea wat power the car was making or would make. cheers

Link to comment
Share on other sites
Taxi33 Community Regular

Taxi33

Posted
  • Author
Posted
stock injectors will work, duty will be close to 100%, then they fail..then u cry.

Haha, :)

Ok so, stock injectors... bosch040 or GTR fuel pump, Highflowed turbo, exhaust, fmic

With a SAFCII and APEXi Avcr... can anyone estimate how much boost you can run safely

or how much power you can go too?

Thanks

Samir

Link to comment
Share on other sites
abu Grand Master

abu

Posted
Posted (edited)
Haha, :)

Ok so, stock injectors... bosch040 or GTR fuel pump, Highflowed turbo, exhaust, fmic

With a SAFCII and APEXi Avcr... can anyone estimate how much boost you can run safely

or how much power you can go too?

Thanks

Samir

Cousin!! :)

Judging by the above replies it should be safe to push it to no more than 220rwkw with an SAFC II + GTR fuel pump.

At least you can check the knock and if we get it tuned on the dyno, AFR's will be spot on, but there is no room for upgrade once that is done. :banana:

Depends how much you want to go though, high-flow is more than capable of more, but injectors will max out and then you will need to get larger ones, then SAFCII cant support after market injectors so you will have to scrap that and go stand alone ECU..

If you want to get to 230 -240rwkw,you will need to go the following;

Bosch 040/GTR pump

Injectors - something like 550cc

Stand alone ECU + tune

So now your stuck lol.

If you want to go over 220rwkw it is recommended that you upgrade injectors, and you cant run after market injectors off standard ECU, so that means after market ECU..

Predicament!

Thanks,

Abu

Edited by abu
Link to comment
Share on other sites
R33GOD Grand Master

R33GOD

Posted
Posted
Haha, :)

Ok so, stock injectors... bosch040 or GTR fuel pump, Highflowed turbo, exhaust, fmic

With a SAFCII and APEXi Avcr... can anyone estimate how much boost you can run safely

or how much power you can go too?

Thanks

Samir

should be able to run 12-13psi with the hiflow safely on the stock injectors which should see 220rwk ish and the other mods stated.

Link to comment
Share on other sites
Zas)-( Community Regular

Zas)-(

Posted
Posted

12-13 psi, everyones got different oppinions but if u got a highflow hell push that shit to 14-15psi for high boost occassions

whats the point of getting a high flow without having that extra boooooost

man 12-13 psi i run on my stock turbo its been like that for over 1-2 years man

go for gold dude and ask the guys thats tuning it for ya

Link to comment
Share on other sites
abu Grand Master

abu

Posted
Posted (edited)
12-13 psi, everyones got different oppinions but if u got a highflow hell push that shit to 14-15psi for high boost occassions

whats the point of getting a high flow without having that extra boooooost

man 12-13 psi i run on my stock turbo its been like that for over 1-2 years man

go for gold dude and ask the guys thats tuning it for ya

You cant push it to 14 - 15psi without a tune as it pings and timing retards etc..

Its not safe and you are guaranteed to blow something on standard ECU.

Even with his car on 12-13psi it leans out and starts to ping. 12psi MAX is safe on STD ECU with supporting mods and a fuel pump..

Stock turbo MAY be able to hold 13psi as it flows less than a high flow turbo, so it doesnt need as much fuel to back up its 13psi like a high flow does.

Big turbo at 14psi, for example, and a small turbo at 14psi are 2 totally different things!

Thanks,

Abu

Edited by abu
Link to comment
Share on other sites
R33GOD Grand Master

R33GOD

Posted
Posted
You cant push it to 14 - 15psi without a tune as it pings and timing retards etc..

Its not safe and you are guaranteed to blow something on standard ECU.

Even with his car on 12-13psi it leans out and starts to ping. 12psi MAX is safe on STD ECU with supporting mods and a fuel pump..

Stock turbo MAY be able to hold 13psi as it flows less than a high flow turbo, so it doesnt need as much fuel to back up its 13psi like a high flow does.

Big turbo at 14psi, for example, and a small turbo at 14psi are 2 totally different things!

Thanks,

Abu

exactly right. 12 psi on my stock turbo, i was making 175rwk. now with the hiflow im making 209 on 12.5psi, with the stock injectors, stock fuel pump and afm. i cant go anymore than that... well i could but it wouldnt be safe as my injector duty cycle is touching 80 % now and pump nearly maxed out.

Link to comment
Share on other sites
Zas)-( Community Regular

Zas)-(

Posted
Posted (edited)

ohhhi wasnt refering to a stock ecu i was refering to a stand alone ecu :thumbsup: my bad

this biggest shit thing on our cars is the ecu. everything is a hassle because its just plan shit!

Edited by Zas)-(
Link to comment
Share on other sites
abu Grand Master

abu

Posted
Posted (edited)
ohhhi wasnt refering to a stock ecu i was refering to a stand alone ecu :thumbsup: my bad

this biggest shit thing on our cars is the ecu. everything is a hassle because its just plan shit!

Hahah lol ease up.

Although, once you have a stand alone ECU its all fun and games after that. Possibilities are endless.. until the injectors max out.. and then the turbo, and then the engine gives in!..

But seriously, getting the car tuned gets the best results! You see so much gain and improvement across the board with a good tune, there is no supplement for that!.. :)

Thanks,

Abu

Edited by abu
Link to comment
Share on other sites
sweetr33 Experienced

sweetr33

Posted
Posted

yeah best way to no wat boost to run is to take it to a dyno once mods are done, and up boost accordly, while watching air/fuel ratio from dyno. best way ;) i had not put my foot down through 3rd or later gears till i had it on dyno with new setup just to know what a/f rati's were doing.... goodluck

Link to comment
Share on other sites
Taxi33 Community Regular

Taxi33

Posted
  • Author
Posted

Yep yep,

After i install a fuel pump I'm going too chuck the car on a dyno and

get my avcr tuned properly too .8 bar!

Still deciding whether too get a GTR fuel pump or a Bosch 040! ;)

Thanks for your help guys!

Samir

Link to comment
Share on other sites

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

    • GTSBoy
      Fake ARP bolts?

      By GTSBoy · Posted

      Meh. I "see" a typo above, that should have been "sell".
    • joshuaho96
      Nismo copper mix twin “pull” pedal height engagement

      By joshuaho96 · Posted

      The clutch pedal has a procedure for adjustment. This can only be done after you are 100% sure the system is absolutely free of air bubbles. You must bleed the clutch master cylinder first, then the "separation pipe" which is the clutch damper line, then the operating cylinder as detailed in the service manual. Also, you must fully depress the clutch pedal between shifts. Just because you can't feel it grabbing does not mean the input shaft is truly decoupled from the crank. At high RPM clutch plates are vibrating and moving around, you need to give it the best possible chance of success. On the BCNR33 Nissan revises these adjustment procedures slightly but not by much: I would be careful with trying to play games with these adjustments. As for the Nismo operating cylinder they say a lot of things. In practice the twin plate clutch needs less movement on the clutch fork to disengage because the whole stackup of the flywheel + friction plates + pressure plate is much taller. Personally if you find that the clutch still disengages too high at the top of the travel I would try the Nismo operating cylinder. Make sure to follow the air bleed procedures. 
    • 25RBGT
      Got this r31 silhouette flood car to rebuild.

      By 25RBGT · Posted

      Thank you for the links. I’m going to go with the 6pin plug you used. next step is rust treating re painting dash support bar and steering column then the 6pin cradle plug when it arrives in the mail.
    • soviet_merlin
      Nismo copper mix twin “pull” pedal height engagement

      By soviet_merlin · Posted

      I don't how much the car makes a difference or whether it is just a question of gearbox and clutch. On mine it's fine. Pull type Nismo coppermix twin (standard, not competition) on the 5 speed in my Stagea. OEM slave cylinder. Bite point is a few cm off the very bottom of the pedal. Clutch pedal all the way down to put in gear, and when heading off at the lights, there's a tiny bit of nothing and then it starts biting. And fully engaged before the pedal is all the way released. There's a bit of play at the top where the pedal does nothing anymore. Are you in Australia @ck_chino? If you are set on using a Nismo slave cylinder I have one new-in-box at home. Ordered it together with the clutch but didn't get it fitted. We can work something out if you want it
    • Butters
      Nismo copper mix twin “pull” pedal height engagement

      By Butters · Posted

      I am using a pull nismo coppermix twin in an r34 getrag box, had both the standard slave and  then the nismo one. Adjusted pedal to get bite point how I wanted , it is on the higher side, but would fully disengage past half way down.  I also read that the nismo slave won't work but I had no issues with the stroke, might become one later as clutch wears but 2+ years of happy motoring so far.  Take the above as one input only, specially as my setup is a bit unique in that I am using an S15 clutch master , cefiro clutch pedal, custom braided clutch line. Lots of variables at play. 
×
×
  • Create New...