Jump to content
SAU Community

Can I Upgrade Injectors Without Retune

itbmils

By itbmils,
in Engines & Forced Induction

 Share

Recommended Posts

itbmils Proficient

itbmils

Posted
Posted

Guys

this is probably a SQ but I have just got hold of a set of new 550cc injectors and some splitfire coil packs for my R32 GTR

My questions is can I fit these without needing to retune my PFC

I assume the coils will be a safe swap - but what about the injectors ?

If it does require a retune - should it require a FULL retune ($700 on the dyno) or can my current tune be tweaked ?

JCMarshall_Law Proficient

JCMarshall_Law

Posted
Posted (edited)

Different injectors will have different flow rates at the same duty cycles so - yes you will need a retune. Although you will not need to start from scratch so it should not be anything like the cost of a full initial tune.

Edited by JCMarshall_Law
pnblight Mentor

pnblight

Posted
Posted

will need to be adjusted on the pfc and a/f checked but it would only be to check the calibration of the setting for the new injectors a few runs on the dyno should do it, no worries 1hour but no more than 1 1/2hours MAX(if it's tuned well now.

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

    • Nizzy_R34
      r34's love to squeal

      By Nizzy_R34 · Posted

      just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • Duncan
      Engine sputter

      By Duncan · Posted

      My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Duncan
      S1 Autech 260RS Wiring Diagrams

      By Duncan · Posted

      Awesome, thanks for sharing!
    • Duncan
      Nissan fuga 450gt android screen

      By Duncan · Posted

      To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
    • GTSBoy
      Nissan fuga 450gt android screen

      By GTSBoy · Posted

      So, now all you need to do is connect the 2 or 3x 12v feeds into the unit to permanent 12v, ACC 12V and IGN 12V that you can find in the spot behind the stereo, and the earth, and then it will switch on with the car.
×
×
  • Create New...