Jump to content
SAU Community

R34 N/a+t Problem & Need A Recommendation For Tuner In Melbourne

clwsqc

By clwsqc,
in Engines & Forced Induction

 Share

Recommended Posts

clwsqc Apprentice

clwsqc

Posted
Posted

Hi all

It's my first time posting in sau as i recently purchased an NA R34 with an aftermarket turbo.

First of all, can anyone recommend a good tuner (preferred specialised in skyline bnr34) in Melbourne? I would be getting the car retuned after fixing a problem that it currenly has.

Secondly, so the problem it has now is that it can rev upto redline on P mode but when driving the rev caps at around 3000-4000. Up to this point i think that either there might be something wrong with the AFM, or i have to install the aftermarket fuel regulator and fuel rail back into the car as i think it could also be the problem from the fuel pump. However i am no specialist in cars so if anyone of u guys can give me anyhelp that would be greatly appreciated.

The previous owner did told me about this rev-capped problem and gave me the aftermarket fuel regulator and rail, however i am not 100% sure if that is the solution to the problem so i am wondering if the problem can be easily fixed by a professional tuner/mechanic incase if it is something non-trivial.

Also, both the fuel injector and fuel pump are aftermarket and not stock, the AFM i believe is a Z32 AFM.

Cheers

Link to comment
Share on other sites
clwsqc Apprentice

clwsqc

Posted
  • Author
Posted

Hi all

It's my first time posting in sau as i recently purchased an NA R34 with an aftermarket turbo.

First of all, can anyone recommend a good tuner (preferred specialised in skyline bnr34) in Melbourne? I would be getting the car retuned after fixing a problem that it currenly has.

Secondly, so the problem it has now is that it can rev upto redline on P mode but when driving the rev caps at around 3000-4000. Up to this point i think that either there might be something wrong with the AFM, or i have to install the aftermarket fuel regulator and fuel rail back into the car as i think it could also be the problem from the fuel pump. However i am no specialist in cars so if anyone of u guys can give me anyhelp that would be greatly appreciated.

The previous owner did told me about this rev-capped problem and gave me the aftermarket fuel regulator and rail, however i am not 100% sure if that is the solution to the problem so i am wondering if the problem can be easily fixed by a professional tuner/mechanic incase if it is something non-trivial.

Also, both the fuel injector and fuel pump are aftermarket and not stock, the AFM i believe is a Z32 AFM.

Cheers

Link to comment
Share on other sites
clwsqc Apprentice

clwsqc

Posted
  • Author
Posted

Sounds like you bought a problem. Which is why the guy sold it.

Prepare to open your wallet.

hmm prehaps not as bad as u thought,I've had my mechanic looked into it and he thinks there's no big problem but it just take time to find this rev-capped problem,which is likely to be either afm or fuel related.

The car has GReddy emanage ultimate ECU since it's an auto as well as many other mods with over 10k receipts, so I am wondering would a professional tuner be able to diagnose the issue better for me?

Link to comment
Share on other sites
admS15 Grand Master

admS15

Posted
Posted

hmm prehaps not as bad as u thought,I've had my mechanic looked into it and he thinks there's no big problem but it just take time to find this rev-capped problem,which is likely to be either afm or fuel related.

The car has GReddy emanage ultimate ECU since it's an auto as well as many other mods with over 10k receipts, so I am wondering would a professional tuner be able to diagnose the issue better for me?

Yes a tuner would be your best option
Link to comment
Share on other sites
Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

Sorry my bad for creating multiple threads.

Also, apparently Chequered Tuning doesn't tune emanages anymore. Is there any other suggestions? Thanks in advance.

I would suggest getting an Adaptronic e420D and splicing it into your loom to control injection/ignition and letting the OEM ECU control the automatic box.

That "rev cap" as you call it is actually a TP Load cut.. your ECU is going "wtf.. why is there so much air going into the motor, I'm cutting fuel"

Talk to Trent, tell him the bastardised setup you have and someone from SAU recommended using an Adaptronic e420D to make it boogie.

  • Like 1
Link to comment
Share on other sites
clwsqc Apprentice

clwsqc

Posted
  • Author
Posted

I would suggest getting an Adaptronic e420D and splicing it into your loom to control injection/ignition and letting the OEM ECU control the automatic box.

That "rev cap" as you call it is actually a TP Load cut.. your ECU is going "wtf.. why is there so much air going into the motor, I'm cutting fuel"

Talk to Trent, tell him the bastardised setup you have and someone from SAU recommended using an Adaptronic e420D to make it boogie.

I tried, unfortunately the guys from Chequered Tuning said Trent wont be able to talk to me over this matter, as apparantly he doesnt get involve with emanage anymore ;/

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

    • Lithium
      Boost level and torque curve

      By Lithium · Posted

      There is a LOT of stuff that can be done, it all depends on how much time and money you want to spend on doing in.  Not all ECUs will be able to do it, and the more control you need the more time and knowledge needs to be put into making it work.  If you're willing to spend the time and money and have the right hardware and skills involved there's a lot that can be done. 
    • thx78
      Boost level and torque curve

      By thx78 · Posted

      I am impressed with all this level of adjustment. I didn't expect all this possibility
    • Lithium
      Boost level and torque curve

      By Lithium · Posted

      Correct.  In the case of the 500kw dyno plot I showed you the car actually runs two boost control solenoids for boost control and a 5psi wastegate spring.  It allows me to control how much boost pressure is applied to both sides of the wastegate valve at any point and fairly accurately control boost target as a result. I've tuned it so that it's able to target anywhere from 5psi to 25psi depending on what's needed.  The target tables I've set up in that car are Gear vs RPM, so every gear has potential for a different boost (and torque) curve.   First and second gear have quite low boost targets, third gear actually has different target boost all the way through the rpm range as it's a stock RB25 gearbox - the boost targets have been chosen to maintain a peak of 600nm (what the owner has set as the maximum torque he's happy with putting through the stock 3rd gear) but it carries that to the rev limiter.   The boost curve to achieve that is something of a ramp up, then hold, then ramp up again and the power curve looks more like a flat line haha.  
    • thx78
      Boost level and torque curve

      By thx78 · Posted

      so you can decrease or increase the boost depending on the diet as you wish?     by acting on the wastegate?
    • Lithium
      Boost level and torque curve

      By Lithium · Posted

      That's torque and power, it's all from a single run.  The boost curve is "held back" from it's peak target in the 3500rpm to 5000rpm range from memory, so it ramps hard to something like 18psi then climbs more progressively to 23psi nearer 5000rpm.   It makes the torque (and power) ramp more "natural" and less hard on parts and traction, it doesn't feel artificially held back.   
×
×
  • Create New...