Jump to content
SAU Community

Recommended Posts

Are you tired of waiting for your stock ceramic wheeled turbo to die?

Do you want that peice of ceramic wheel in you cat now?

tired of seeing other peoples engine failure threads and want one yourself?

need an excuse for a turbo upgrade?

or just plain love destroying things?

if you answered yes to any of the above then you need 8 1n4004 diodes and a boost tap.

so how do you it you ask?

simple, install the boost tap, then for the diodes

if you strip back the wiring on the afm, you will notice 4 wires( series 1 r33 gtst and r32 gtst)

there colours are Black,black/silver,White,black/white

what you do is conect the diodes anode to cathode in series then the anode end of the chain goes to the black wire on the afm plug, and the cathode end goes to the white wire.

this will stop the ecu going into RnR mode,

now to kill the turbo, increading boost past 1.3 bar (r32 with stock r33 turbo) will still cut badly as the fuel system will be more than maxxed out, this will definatly kill the turbo and motor.

however, if you put the boost to 1.2 bar, with a fresh pump and working fuel pressure reg, this will max out the injectors and give you air fuel ratios of about 16:1 up high in the rev range, so no rich and retard, just lots of boost, not much fuel and a fair ammount of pinging.

Perfect recipy for a dead motor and tubo, all for the cost of 80c worth of diodes and some lecy tape, as most of you will already have a boost tap.

will be trying a rising rate reg and higher fuel pressure to see if i can work around the stupidly high air fuel ratios. this rb20 hates me...yet it what it deserves for burning a valve before i got it,

i am in no way responsible for any damage you do to your car following these instructions.

this is a cheap way to get around the rich and retard cut of exciding the max air flow limit set by the ecu, with a stock fuel pump and reg ect it is very dangerous as i have pointed out and will, not might, yet will kill your motor, this is ment for people who know the risks and have increased fuel pressure or somethign to compensate for the extra boost.

Link to comment
https://www.sau.com.au/forums/topic/234616-ceramic-turbos-and-fcd/
Share on other sites

16:1 in the top end?

Are you honestly serious or just really REALLY stupid?

Awards for thread of the year should include this

bit of both, only hit that once, lol, for like a few seconds if that, fixing it now. i wouldnt run it at that kind of setting

there's a secret mode that nissan built into the std ecu to enable a secret hidden power mode in the ecu

its only valid for 26secs and 33milliseconds each time you enable so make sure your on race track when you try it

when you start the car put the left indicator on, then the right, then hold down demister button for 30 seconds

the ecu detects this secret combination and the engine light will flash - this indicates the special mode is on

the japs know about this hack and they use it in their 300km/h runs down the tunnels in tokyo

you will notice the duration of the secret mode represents the nissan GTR engine capacity and the more dominant skyline model, the R33 skyline

this is by no means a conincedence and it was a secret mode developed by one of the nissan tech's who was later made redundant, but his secret was still built into the ecu

ok a quick update.

do not increase base fuel pressure as the ecu learns around this very quickly,i ran 75 psi for the base pressure and within 5 min the car was running normaly again with stupid high af's at high boost,yet the first few min were awesome until it adjusted.

the only way i can see to safely get the required fuel up top, although yet to try, is with a 2:1 or 3:1 rising rate reg, and possibly a tap on the reg to let it start increasing fuel pressue above 5 psi so any closed loop cell isnt effected so the ecu wont learn to adjust to the new fuel pressure

hmm giving up so will just retune my ecu when i put the rb30 in,

everytime u fix an issue there is a new problem, for instance, rising rate reg to get more fuel ended up working when leaving the base pressure alone, however iginition timing is to advanced for boost that high and pining wont stop even with more fuel and the fmic and the engine not overheating, only fix for that is retard the timing heaps, that makes you lose power everywhere else

cheap massive boost mission : Epic Fail

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

    • My thinking is that if the O2 sensor is shot then your entire above described experience is pure placebo.
    • Here is the mess that I made. That filler there was successful in filling dents in that area. But in the middle area. I can feel dents. And I've gone ocer it multiple times with filler. And the filler is no longer there because i accidently sanded it away. I've chased my tail on this job but this is something else lol. So I'm gonna attempt filler one more time and if it doesn't work I'll just high fill primer the door and see where the issues are because guidecoat is of no use atm.
    • Ok, so I think I sort of figured out where I went wrong. So I definitely overthinked it, and I over sanded, which is probably a large part of the problem. to fix it, I ended up tapping some spots that were likely to be high, made them low, filled them in, and I tackled small sections at a time, and it feels a lot better.    I think what confused me as well is you have the bare metal, and some spots darker and some are lighter, and when I run my finger across it, it' would feel like it's a low spot, but I think it's just a transition in different texture from metal to body filler.    When your finger's sliding on the body filler, and crosses over to the bare metal, going back and forth, it feels like it's a low spot. So I kept putting filler there and sanding, but I think it was just a transition in texture, nothing to do with the low or high spot. But the panel's feels a lot better, and I'm just going to end up priming it, and then I'll block it after with guide coat.   Ended up wasting just about all of my filler on this damn door lol  
    • -10 is plenty for running to an oil cooler. When you look at oil feeds, like power steering feeds, they're much smaller, and then just a larger hose size to move volume in less pressure. No need for -12. Even on the race cars, like Duncans, and endurance cars, most of them are all running -10 and everything works perfectly fine, temps are under control, and there's no restrictions.
    • Update: O2 sensor in my downpipe turned out to be faulty when I plugged in to the Haltech software. Was getting a "open circuit" warning. Tons of carbon buildup on it, probably from when I was running rich for a while before getting it corrected. Replaced with new unit and test drove again. The shuffle still happens, albeit far less now. I am not able to replicate it as reliably and it no longer happens at the same RPM levels as before. The only time I was able to hear it was in 5th going uphill and another time in 5th where there was no noticeable incline but applying more throttle first sped it up and then cleared it. Then once in 4th when I slightly lifted the throttle going over a bump but cleared right after. My understanding is that with the O2 sensor out, the ECU relies entirely on the MAP tune and isn't able to make its small adjustments based on the sensors reading. All in all, a big improvement, though not the silver bullet. Will try validating the actuators are set up correctly, and potentially setting up shop time to tune the boost controller on closed loop rather than the open loop it is set to now. Think if it's set up on closed loop to take the O2 reading, that should deal with these last bits. Will try to update again as I go. 
×
×
  • Create New...