Power FC need help adjusting the injector lag/ transition
10-22-14, 01:28 PM
#1
Senior Member
Thread Starter
iTrader: (5)
Join Date: Dec 2011
Location: iowa city
Posts: 312
Likes: 0
Received 0 Likes
on
0 Posts
need help adjusting the injector lag/ transition
ive been having trouble getting my tune down. i think it might be my injector lag and transition. all ive changed is the injector size.
injector specs
primary
high imp
Static Flow Rate: 80lb/hr = 875 cc/min
Dynamic Flow Rate : 18.6 mg/pulse 2.5ms PW, 20 ms Period
secondary
low imp
Coil Resistance: 4.5 Ohms / Low Impedance
Static Flow Rate @ 43.5PSI ( 300kPa ) w/Gas: 1600 cc/min = 152 lb/hr
ive found these but it doesnt make since to me
Injector____Denso________Denso (w/ Peak & Hold Driver)
Flow CC/min__550________550
Flow LB/Hr____52_________52
Ohm__________2__________2
10v_________1.24_______0.66
11v_________1.04_______0.58
12v_________0.87_______0.50
13v_________0.75_______0.41
14v_________0.64_______0.34
15v_________0.55_______0.27
yea, you'll want to put in the lag timings for each voltage. Then you want the "gross" lag to be zeroed out.
The X's will be whatever your fuel map is set at. mine are at 90, but that was to get in the ballpark, and then the map was tuned around that.
So you'd have something like:
Front Primary_______X_______0.0
Front Secondary_____________0.0
Rear Primary _______X_______0.0
Rear Secondary_____________0.0
The Q's would be your injector size at whatever fuel pressure you run. I run 725 and 2000's, at 43.5psi base pressure, so:
Q Primary_____715
Q Secondary___2225
You'd obviously want to put in the 1015 for the primary, if you are running 43.5psi
On the transition, this will vary based on what works for your car. My car seems to like to transition at 30% and .900ms
Then, like i said, the tables to the right of that you pull directly from the charts fendamonkey posted. So if you are running 43.5 base fuel pressure, you'd input these values:
_________Primary_____Secondary
16v_______.805________.375
14v_______.990________.495
12v_______1.240_______.680
10v_______1.675_______.950
8v________2.600_______1.455
6v_____(interpolate)_____2.840
injector specs
primary
high imp
Static Flow Rate: 80lb/hr = 875 cc/min
Dynamic Flow Rate : 18.6 mg/pulse 2.5ms PW, 20 ms Period
secondary
low imp
Coil Resistance: 4.5 Ohms / Low Impedance
Static Flow Rate @ 43.5PSI ( 300kPa ) w/Gas: 1600 cc/min = 152 lb/hr
ive found these but it doesnt make since to me
Injector____Denso________Denso (w/ Peak & Hold Driver)
Flow CC/min__550________550
Flow LB/Hr____52_________52
Ohm__________2__________2
10v_________1.24_______0.66
11v_________1.04_______0.58
12v_________0.87_______0.50
13v_________0.75_______0.41
14v_________0.64_______0.34
15v_________0.55_______0.27
yea, you'll want to put in the lag timings for each voltage. Then you want the "gross" lag to be zeroed out.
The X's will be whatever your fuel map is set at. mine are at 90, but that was to get in the ballpark, and then the map was tuned around that.
So you'd have something like:
Front Primary_______X_______0.0
Front Secondary_____________0.0
Rear Primary _______X_______0.0
Rear Secondary_____________0.0
The Q's would be your injector size at whatever fuel pressure you run. I run 725 and 2000's, at 43.5psi base pressure, so:
Q Primary_____715
Q Secondary___2225
You'd obviously want to put in the 1015 for the primary, if you are running 43.5psi
On the transition, this will vary based on what works for your car. My car seems to like to transition at 30% and .900ms
Then, like i said, the tables to the right of that you pull directly from the charts fendamonkey posted. So if you are running 43.5 base fuel pressure, you'd input these values:
_________Primary_____Secondary
16v_______.805________.375
14v_______.990________.495
12v_______1.240_______.680
10v_______1.675_______.950
8v________2.600_______1.455
6v_____(interpolate)_____2.840
Thread
Thread Starter
Forum
Replies
Last Post
Jeff20B
1st Generation Specific (1979-1985)
73
09-16-18 07:16 PM
SakeBomb Garage
Group Buy & Product Dev. FD RX-7
8
10-09-15 10:05 PM