Log in

View Full Version : Apexi power fc and 740cc


nickauger
07-04-2013, 06:10 PM
Hey I would like to know how to adjust my injector in my power fc.

For sr20det

Injector are 740cc hks , lag time they advertise is 0.66ms

Original is 0.70ms or 0.58ms (2 version ??)

So I have adjust my injector to 50% and +0.08 but my car is running crappy rich

Any input would be appreciated ! thanks

fliprayzin240sx
07-04-2013, 07:42 PM
Original latency should be .528 so subtract that from .66 and you should get .132. Punch that for your latency for each injector. Also, you punched in the 50% for each cylinder right?

The default map for the PFC is rich, you can tweak the map so its drivable if you have a wideband. If not, get it tuned. You can contact Stever Shadows in here and he can get you a fuel and timing map for fairly cheap. Itll be better than the stock maps.

nickauger
07-05-2013, 03:49 AM
Original latency should be .528 so subtract that from .66 and you should get .132. Punch that for your latency for each injector. Also, you punched in the 50% for each cylinder right?

The default map for the PFC is rich, you can tweak the map so its drivable if you have a wideband. If not, get it tuned. You can contact Stever Shadows in here and he can get you a fuel and timing map for fairly cheap. Itll be better than the stock maps.

where you have find lag time for stock is .528 because the more i increase the lag time the more richer is would be

nickauger
07-05-2013, 03:56 AM
I found stock is 0.58ms at 14 v and hks is 0.66ms at 13v and 0.55ms at 14v, so my correction shoud be -O.03

my car is currently running a solid 14.4v

inopsey
07-05-2013, 11:13 AM
Original latency should be .528 so subtract that from .66 and you should get .132. Punch that for your latency for each injector. Also, you punched in the 50% for each cylinder right?

The default map for the PFC is rich, you can tweak the map so its drivable if you have a wideband. If not, get it tuned. You can contact Stever Shadows in here and he can get you a fuel and timing map for fairly cheap. Itll be better than the stock maps.

once upon a time i bought a steve shadows base map; biggest waste of money ever spent on my car. after adjusting it with my wideband adding a ton of timing for fuel economy off boost, i ended up with a map that looked very similar to the apexi base map; and i was out 100$ with no customer support. i also was using a pfc d jetro.

nickauger
07-05-2013, 11:44 AM
I've tune my car this morning and it was easier with lag lime of -0.04 , idle is 14.7 at 1.0 in the fuel map