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

    • sunsetR33
      newbie attempts the GTR life.

      By sunsetR33 · Posted

      thanks mate, one of the reasons I even bought it to be fair.
    • sunsetR33
      RB26 turbo oil banjo bolts

      By sunsetR33 · Posted

      I found parts on EFI Solutions webshop that seemed to be the accurate ones. I haven't gotten around to fitting the turbos back on the car yet since I still have to deal with the shitty crack in the engine block. But I'm confident that the bolts I ordered will fit. According to EFI they are also 7-16/24. The reason M11x1 got involved here is because it is apparently very similar to 7-16/24.
    • Kaptain
      R33 general questions

      By Kaptain · Posted

      Well, to be fair to the car I've driven it daily for almost a decade now, although in that time only put on 50k, as it just recently passed 100k miles early this year. For the most part its been fine because I've been able to source parts from AUS like jacks jdm and a few places in Japan, some things like pads have been easy since 300z pads swap right in... I realize its probably at that time in its life i should find a new DD (but I rent and only have so much space, no garage) so new cars just complicate things. As it is older though, I recognize its about that time as with my '67 GTO to maybe side step and find an alternative, but if i can keep driving it... I want to.   That said, I may just look into a local shop that might be able to, problem is the mechanic I work with has limited space as a mom and pop operation, and he's a busy busy man, so id need to find out if he can keep the car in the meantime, which may or may not be practical for him. Maybe I'll just buy one off jacks jdm and get that refurbed /shrug.. just looking at options and what others may have to offer for advice on the matter. Like I said, its hard finding people around here who actually have one, I've had mine 9 and a half years and I've met 3 others, and they are all military, one was oem from 95 with 30k miles (rip that car... guy got hit after someone crossed s double yellow, totaled it)
    • zoomzoom
      WGNC34 Rear springs

      By zoomzoom · Posted

      I've noticed my rear springs sag a bit compared to the fronts. I have stock springs and KYB struts. The front wheels are pretty consistent in their ride height, but compared to the front wheels, one of the rears sits 20mm lower, and the other 40mm lower. This negatively affects the ground clearance, and also angles the headlights up. What are some some economical options for new springs? Or information like good spring rates, lengths  in order to find a suitable replacement etc Far from lowering the car, I'd prefer to raise it a bit to keep it ground clearance friendly.
    • Blakeo
      RB25DET NEO Cylinder Head

      By Blakeo · Posted

      I searched for ages as well, I'm importing an engine to get the head off it. 
×
×
  • Create New...