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Showing content with the highest reputation on 01/02/2011 in all areas

  1. this is of great interest to me currently as im yet to choose turbo(s) for my new build. please no chatter or conversations as to make the thread easier to wade through if it gets as big as the rb25 thread! all relevant engine mods would be great too. cheers
    1 point
  2. HOWTO: RB25DET High Boost mode with standard solenoid Intended Audience: Stock RB25DET owners Technical Level: Very Easy Duration: 5 minutes Effort: Easy Result: Fairly Good !!!Caution/Achtung/Attenzione!!! Follow this guide at your own risk. You have been warned. We are not responsible for any actions you take. The instructions contained herein are only a guide and should be done with caution, If you doubt see your local mechanic. If you are unsure or are not confident don't do it. Background: As you all know the standard R33 RB25DET boost solenoid (value controller) is 5psi until rpm is greater than 4500rpm and then its 7-8psi. Continue reading if you wish to always be in high mode (7-8psi). If you have an aftermarket boost controller then you can stop reading now. The standard solenoid has two wires running two it, one is constant power which is shared with the AAC value and some other components (see wiring diagram) the other is a ground signal. The ground signal (black wire) is run to the ECU. This wire is grounded when rpm is greater than 4500rpm by the factory ECU. Basically if you give the wire a constant ground instead of the ECU's above 4500rpm ground it will always be open, thus allowing it to be in high mode aka 7-8psi. The mod: Cut the black wire and run it to your own ground on the car body somewhere. Find a local bolt/nut or metal chassis component and attach a lead wire to it, then run this lead wire the black wire on the standard solenoid. For testing you could run this to the suspension tower, is has a huge bolt/thread on top of it. The other end of the two wires (black and white) should run to the factory harness plug (black odd looking plug), which can be simply taped up so it goes nowhere. Be sure not to the modify the white one, as it's power for the solenoid. See new-wiring.jpg for how it should look Basically the black wire goes to your new ground, the white wire doesn't change. Make sure you tape up the loose end of the black wire out of the plug and don't leave it dangling around. Now to test Test: Start up your car, make sure you don't have any alarms or warning lights etc.. Safety is important!. Instead of your car going into 7-8psi above 4500rpm it will be in this mode all the time, this means when you take off in first youll be limited to 7psi instead of 5 and thus applies for all driving thereafter. Take it for a quick spin and see the difference. You'll notice first is whole different feeling to it and each gear thereafter seems to have more stick about it. Your top end power output will not be changed, ie if you made 140rwkw and you've done this mode it will still be 140rwkw it's just the curve will be sharper as you'll be on more boost quicker Tips: If you don't notice any different then you've either done the wrong wire or the ground is strong enough. Be sure to pick a strong ground and make sure its secured properly. You can get gold washer clips which will hold a wire and provide a good ground for use on a nut (see the yellow thing in new-wiring.jpg) Check (if you live in usa): Costco Weekly Ad, or Supercheap Auto Catalogue. If in doubt you can simply unplug the black factory harness plug and your controller will be in closed mode which is 5psi all the time. With only a power signal the solenoid doesn't function and thus it will always be in "closed" mode which is 5psi Questions? How does the solenoid work? The stock solenoid works like this, with power and ground it will be in "open" mode and let through a maximum of 7-8psi. With only power it will be in "closed" mode and will only allow through about 5psi. The ECU makes it go into "open" mode by giving the black wire ground signal which makes the circuit complete. All you are doing by "adjusting" the black wire is making the circuit complete all the time. What will happen above 4500rpm now that I've done this mod? The ECU will still ground the wire above 4500rpm but nothing will happen. As long as the black wire is taped up you will be fine. Of course if you are creative you could run this wire to something else and it will be turned on when rpm is greater than 4500rpm. Crap like turn on the water spray kit for the intercooler, flash a light, do some other crap I've broken something, can I reverse what I have done? Should you do some damage or have broken stuff you can get a stock boost solenoid from the for sale section of the forums for like $50 tops, as its fairly useless when you have an aftermarket boost controller. The standard wiring is fairly simple, one is ground one is power. You can't have a circuit without both. See wiring diagram if you are unsure or doubtful. Have fun and enjoy ** Corrected wire colour mistake ** ** Corrected 3 more wire colour mistakes lol Duncan **
    1 point
  3. Aaron, You should do a flow test on the stock pump so we can work for sure that the Walbro actually does create more fuel pressure.. unless craig has already done it with my old one?
    1 point
  4. A) there is a WTB section B) settle down on the bumping.... Forum rules are once a week, not once every day C) how about having a search through the rest of the for sale section and find a car like what you are after
    1 point
  5. 1 point
  6. I know what you mean about upsizing turbo but as you know, there are more reasons to go with a bigger housing than to get more power. I'm planning on running a high compression engine and I don't want the exhaust backpressure of a T25 .64 turbine housing. Something around .75 would be ideal but I'd also be happy with a .86. I'm a strong believer in building the engine to make power by itself with lots of timing advance, high compression, cams and/or capacity increase and running low boost with a large A/R turbine housing. It just makes it have a more N/A-like power delivery which I prefer for the street.
    1 point
  7. SEND ME A PM once payment has been made to ensure you definately get slotted into the very next print run. This will help ensure you get your calendar(s) sent out as quickly as possible! Thanks for the interest guys, Both Kory and myself are excited to offer you guys such an awesome looking calendar.
    1 point
  8. I got dicked again, lost 6points.. sighh.. i decided i'm keeping the car. Thanks for the replies, you're all a bunch of 50 yr olds who seriously need to loosen the f**kup. If you all do drive a high powered car on the street and don't "speed" or do anything. Go get a corolla. I don't see the point of having a skyline when you can't enjoy it..
    -1 points
  9. Damn your so funny, you should join the comics club. Better then driving a car around when you can't use the potential on the street, Makes you a showoff attention seeker
    -1 points
  10. If you get defected, YOU DESERVE IT, DON'T BREAK THE FQN LAW. Damn kids breaking the law. Its there for a reason.
    -1 points
  11. Ok, I did 100km in a 4 Lane in a 70 zone, at 12am when no one is around, sounds like 'common sense speeding'? You think i go around the city drifting and speeding ? Cool. And iif you think even 99% of the people on this forum never gunned it somewhere before..... Well think again, cos i'm pretty sure i've seen a f**kload of clowns from SAU hoon before. You're all just a bunch poofs over the forum.. Even in real life you know you have to give your a car a bit of a boot and you're all here flaming me cos i got unlucky twice? I lost it 3 times cos i went over points and once 25km over = 1 month licence loss..... And for you nerds that only Race on the "Track". Go buy a hyundai excel for a daily, save yourself thousands of dollars on petty and getting defected etc. and use it as a track car. Cos i'm pretty sure you bananas' cars aren't even EPA Legal, you're f**king polluting the planet, you're still no f**king good, its still illegal, bunch of hypricrits.
    -2 points
  12. Hi guys, just lost my licence again for the 3rd time on my red p's, so im gonna sell the 34 gtt and get a new car and buy a house any ideas for a new car for under 10k will be greatttt! Cheers
    -2 points
  13. good on you benny for being the jumped up wanker - im sure youve got alot to do other than sit here and make up bullshit like you even have the first clue. for one .. i paid spoolin 300$ for these springs.. do the research you f*kwit.. theyre $212 from IM - with about $60 packaging... do the math .. and yes they were damaged. perfect condition my arse mate.. again your defending bullshit.. i saw the springs i recieved and the damage. the plastic leafs that are supposed to stop the springs from squeeking were f **ked up and damaged.. dont assume f**k all mate.. because your talking f**king shit defending something you know f**k all about. sure maybe i shouldve not posted in here on the forum but i wanted to make a point of f**kwits talking utter f**king shit trying to defend other f**kwits ripping people off. i told you so has a brother benny .. his name is shut the f**k up asshole.lol and whats this bullshit story about me complaining to you about my rims not fitting.. WTF are you on about dickhead ? i never even spoke to you about my rims not fitting. are you on f**king crack mate ?>
    -6 points
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