Need major power fc help in here. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

weissguy · 04-29-2009, 05:45 PM

s14 sr20det Setup:

.020 over sized, stock compression pistons
Eagle Rods
hks 264 intake cam and 272 exhaust cam
Tomei 740cc injectors
t28 turbo

I just put the engine in and planned on running/tuning a little but I can barely get the thing to run. I think my problem is the injector settings. It is running super rich and wont hold an idle at all. The car won't start without me giving it a little bit of throttle to coax it.

Current injector settings:
1) 50% .08ms
2) 50% .08ms
3) 50% .08ms
4) 50% .08ms

It is running super rich and I have literally taken out all the fuel that the maps will allow you to take out in the lower rpm range. It does not affect the afr's. I sit right at 10:1ish. The only time that I do see the AFR's come into range is when I mess with the injector correction and lower it from 1.0 to ~.6 ish

does anyone have any suggestions so that I can get it running and properly break this engine in?

godsmack · 04-30-2009, 11:14 AM

Apexi PowerFC FAQ

This should help you with you're troubles. IMO get it to someone that can tune it right. If you do it yourself and aren't familiar with the fc you will most likely never get it right.

helikz · 04-30-2009, 11:20 AM

THIS SOUNDS LIKE A JOB FOR.....

DUN DUN DUN

STEEEEVE SHADOWWWWSZSZ.

but yeah, I've only heard things of legend about mr shadows and he offers remote tuning. I understand you're trying to learn to do it yourself, and I like that, but I think the best way is going to be getting a pro to do it, then pick their brain about why they're doing what they're doing.

edit: Look up Steve Shadows in the member list, he'll get you fixed up right, and he doesn't come off as the elitist jerk type to me, but I'm a prick, so who knows.

slider2828 · 04-30-2009, 11:21 AM

I hope with those mods you and no tune you expect your car to run. The PFC cannot adjust idle for those cams. Contact steve shadows to get you a base map. Even with 20 over, its going to affect the initial settings of the pfc.

jspaeth · 04-30-2009, 02:04 PM

Quote:

Originally Posted by slider2828

I hope with those mods you and no tune you expect your car to run. The PFC cannot adjust idle for those cams. Contact steve shadows to get you a base map. Even with 20 over, its going to affect the initial settings of the pfc.

I was gonna say, you should be able to adjust for the injectors and limp the car around for a while, not putting any load on it and not getting into boost......this worked for me.....

But the cams screw things up pretty good I bet, to the point where the base map that comes with the PFC is not good enough....my guess at least

rps13drift · 04-30-2009, 02:15 PM

Hey dude! I reccomend loading this base map made by enthalpy. Its a great base tune to start off with.
Racing Service Enthalpy

Also make sure your maf and tps voltages are correct and that its not anything mechanical

04-29-2009, 05:45 PM	#1
weissguy Zilvia Junkie Join Date: Feb 2007 Location: dallas Posts: 301 Trader Rating: (0) Feedback Score: 0 reviews	Need major power fc help in here. s14 sr20det Setup: .020 over sized, stock compression pistons Eagle Rods hks 264 intake cam and 272 exhaust cam Tomei 740cc injectors t28 turbo I just put the engine in and planned on running/tuning a little but I can barely get the thing to run. I think my problem is the injector settings. It is running super rich and wont hold an idle at all. The car won't start without me giving it a little bit of throttle to coax it. Current injector settings: 1) 50% .08ms 2) 50% .08ms 3) 50% .08ms 4) 50% .08ms It is running super rich and I have literally taken out all the fuel that the maps will allow you to take out in the lower rpm range. It does not affect the afr's. I sit right at 10:1ish. The only time that I do see the AFR's come into range is when I mess with the injector correction and lower it from 1.0 to ~.6 ish does anyone have any suggestions so that I can get it running and properly break this engine in?

04-30-2009, 11:20 AM	#3
helikz Leaky Injector Join Date: Nov 2007 Location: VA Age: 46 Posts: 99 Trader Rating: (0) Feedback Score: 0 reviews	THIS SOUNDS LIKE A JOB FOR..... DUN DUN DUN STEEEEVE SHADOWWWWSZSZ. but yeah, I've only heard things of legend about mr shadows and he offers remote tuning. I understand you're trying to learn to do it yourself, and I like that, but I think the best way is going to be getting a pro to do it, then pick their brain about why they're doing what they're doing. edit: Look up Steve Shadows in the member list, he'll get you fixed up right, and he doesn't come off as the elitist jerk type to me, but I'm a prick, so who knows. __________________ You should listen to your friend Billy Zane, he's a cool dude.... Last edited by helikz; 04-30-2009 at 11:22 AM.. Reason: because i forgot something.

04-30-2009, 11:21 AM	#4
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	I hope with those mods you and no tune you expect your car to run. The PFC cannot adjust idle for those cams. Contact steve shadows to get you a base map. Even with 20 over, its going to affect the initial settings of the pfc. __________________ Turn and Burn!

04-30-2009, 02:15 PM	#6
rps13drift Zilvia FREAK! Join Date: Oct 2006 Location: NJ BRO!!!! Age: 39 Posts: 1,194 Trader Rating: (6) Rides Gallery: rps13drift Feedback Score: 6 reviews	Hey dude! I reccomend loading this base map made by enthalpy. Its a great base tune to start off with. Racing Service Enthalpy Also make sure your maf and tps voltages are correct and that its not anything mechanical __________________ http://allies-drift.blogspot.com/

04-30-2009, 11:14 AM	#2
godsmack Zilvia Addict Join Date: Feb 2009 Location: Allentown, PA Age: 39 Posts: 652 Trader Rating: (0) Feedback Score: 0 reviews	Apexi PowerFC FAQ This should help you with you're troubles. IMO get it to someone that can tune it right. If you do it yourself and aren't familiar with the fc you will most likely never get it right.