Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Go Back   Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum > General > Tech Talk > Engine Tech

Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series.


 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 10-02-2014, 12:47 PM   #6
rastaman
Zilvia Addict
 
Join Date: Apr 2009
Location: Fl.
Posts: 708
Trader Rating: (1)
rastaman is an unknown quantity at this point
Feedback Score: 1 reviews
Quote:
Originally Posted by Kingtal0n View Post
I am in south florida, I tune PFC all day.

Right off the bat I am going to tell you tuning the ignition timing is an art, and even more so when the engine is highly modified. The lower the vacuum signal, the larger the ports/cams/turbo, the more sensitive cell to cell you need to be. Your factory PFC map will have very low, far too conservative timing numbers in the 0-8" Hg range for instance. And conversely, too large of numbers in the 4-7psi range is also common.


Just to get it driving, use the global injector adjustment WHILE driving (do not fool with global adjustment at idle). Get the car moving and watch your wideband. Keep the numbers in the 14.5 Range by adjusting the global injector % until you can cruise comfortably 14.5-15.2 range. That will allow you to drive the car to a tuner. do not boost it.
Where in sfl are you? What is your cost for PFC tune? Do you use a dyno?
rastaman is offline   Reply With Quote
 

Bookmarks

Tags
pfc, rb25, tuning


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 07:58 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
vB.Sponsors
Copyright ? 1998 - 2022, Zilvia.net