Sard 700cc Gtr Injector Settings

[heller44]

Hello,

I am having a few issues with getting my engine to idle nicely with these new injectors installed.

Base fuel rail pressure set. Maf settings in for the nismo afm's.

Correction settings

Used 55% through to ~80%, richer makes it better, but without the latency fudge it won't idle.

The problem is with latency.

Mathematically it should be 63% and 0.19 (confirm correct?), this won't even think about idling. Winding the latency adjustment out to ~0.80 and it idles and sounds a lot better.. but I have never heard about having to adjust it this far.

Why is this? Any ideas?

Default pfc map by the way.

Thanks for any suggestions.

James.

[R33GTRKid]

it has something to do with the angle and depth that the sard injectors sit, if you ring x-speed and speak to Hanson or Ant they will tell you more, they sorted mine out

[shanef]

corrections should be:

63.5% and 0.188ms

thats based on:

(old cc/new cc)*100=correction%

and

new latency-old latency=latency correction

(444/700)*100=63.4286%

and

0.960-0.772=0.188ms

[GeeTR]

Interesting latency changes have an effect on your car. Tweaking them on a SR I know, makes no difference at all.

PFC re-initialize?

[shanef]

actually, nengun have them sards as having a latency of 0.65ms

so then that makes the latency correction -0.122ms

[paulr33]

once you confirm correct #'s please pm me

ill add to PFC FAQ

[heller44]

Thanks for the responses, just flew back in tonight.

shanef, thanks for the confirmation, it just won't run with those.

geetr, tried it multiple times thinking it was a finger fault.

R34kid, it might be considered rude for me to ring them as I have decided to take my car to cypher instead, i'll ring there and ask.