Jump to content
SAU Community

Rolls

Members
 View Profile  See their activity

  • Posts

    5,226

  • Joined

  • Last visited

  • Feedback

    100%

 Content Type 

Everything posted by Rolls

  1. Rolls
    I personally had the wrong gasket installed by the previous owner in between the sandwiched halves of the intake manifold, was leaking badly at cylinder 3 and 4
  2. Rolls
    could be a gasket
  3. Rolls
    then take the stupid bleed valve off
  4. Rolls
    I have owned two rb20dets and they both ran 13psi with no boost controller, one ran 2.5" straight through exhaust, the other ran 3" with a single muffler
  5. Rolls
    wut
  6. Rolls
    UNPLUG THE THING FFS Your boost level is set by your wastgate actuator spring, however when you change the exhaust this relieves backpressure and also increases it. Standard with everything stock is 6psi, but with exhaust etc 12-13psi is normal. Like I said twice before if you have the turbosmart piece of shit even with gain set to 0 the extra length of the lines etc will make it spike to 15psi etc, hence remove it!!! The popping is because you haven't got an aftermarket ECU and the stock ECU is making it run rich as f**k, your stock coils, old plugs etc can't hack it and hence it misfires. Conclusion: Remove the boost controller, edit: google how a turbo wastegate (internal vs external) works and this will help you understand.
  7. Rolls
    yeah just read the thread lol
  8. Rolls
    So just put the afm in a bigger pipe, or get a ford lightening maf, or go map etc. plenty of much simpler solutions, putting it in a 4" pipe makes the most sense
  9. Rolls
    A boost controller only lets you run more boost than the wastegate spring allows, not less. So with a stock rb20 turbo with exhaust, front mount etc 10-13psi isn't uncommon "standard" so putting a boost controller on there set to 0 gain will often still run more boost due to the extra length in the lines. Hence remove the boost controller and I have no doubt it will drop to your desired 1 bar.
  10. Rolls
    Definitely possible.
  11. Rolls
    Yeah if you get it right, most people who go 280kw choose a turbo that can do 300+ hence why it isn't optimal, and most people that buy a turbo and expect 280 with response have issues(?) and can't get it there, eg I think it was hanaldo? who has pretty much everything spot on but still couldn't replicate staos 280 due to something not being 100%. If you go E85 then totally different story though.
  12. Rolls
    Well that is your opinion and I disagree with you.
  13. Rolls
    yes have you ever been in car with that much power with 2.5L before? You will know what I mean if you have.
  14. Rolls
    Not if you are around town you can't, 2nd gear is as low a you can go for 60 and I can guarantee you it will be laggy in 2nd still.
  15. Rolls
    It is the transient response that kills it, it isn't just rpm, it is time it takes to get on boost. It will be slower guaranteed, slower off the line, slower in traffic, slower in the hills (most of the time), faster on the track and drag strip.
  16. Rolls
    250kw is the sweet spot for a road car, you can get that with almost stock response.
  17. Rolls
    It will be slower, there is no good reason to do it. Why do you want a slow car?
  18. Rolls
    It will run up to 12-13psi with no boost controller if you have a free flowing exhaust. I bet you have loads of vacuum hose going to it which alone will increase the boost, just remove the controller altogether. I have a turbo shit dual stage bleed valve, even on the lowest setting it would spike to 15psi. also wtf is "cleaner boost" rofl, I lold irl when I read that.
  19. Rolls
    The boost line came off my boost gauge, was enough of a leak to make it stall. Kind of makes finding these leaks a pain in the ass., especially if you have multiple not very bad ones.
  20. Rolls
    wut? You can't just use a stock ecu and expect a 30 to run lol, so you'd need a nistune no matter what. Why do you want to run 2 AFMs? Just use the rb20 ecu with a nistune, will do everything you need it to.
  21. Rolls
    Are there signs of detonation on the pistons? If not then it had nothing to do with the boost level. What turbo/boost were you running? Was it tuned for that boost or did you just randomly turn it up without checking it was safe?
  22. Rolls
    You have the extremely common peak torque misfire. Caused by bad spark due to spark plugs, spark plug gap, coil packs, ignitor, increase boost on stock ecu causing massive overfueling making the mixture even harder to ignite, boost leaks etc will also cause the car to run even richer etc also compounding the problem. Start at the start and work your way through the list, I am confident it will be one of these things. Misfires are still very loud with a stock exhaust. Detonation is never loud, it is just a pinging noise like marbles in a can. Also you can't hear back pressure, back pressure is just high pressure in the exhaust. Blow into a straw vs blowing through a pipe, does it make a machine gun popping noise? lolol
  23. Rolls
    Sounds like assembly issue or faulty component then. I guess the previous owner could have overreved it badly and fatigued it and all it needed was a bit more stress to finish it off though. Guess you will never know the true cause.
  24. Rolls
    Just something to keep in mind, the price of the turbo is only a fraction of the cost. Do you have all the required supporting modifications?
  25. Rolls
    Is it a street car? I wouldn't do it.
×
×
  • Create New...