my wide band was staying in the mid 13 range , fuel pressure was set at 50 psi at idle , and it seamed to have a few power dips , after i pumped the fuel pressure up some (unsure how much my gauge wont read right) but the dips in the power seamed to disappear , but afr stayed in the same range
mods are , cai(filter in fender well) , 59mm tb , gm proto s/c , pacesetter header (coated) , high flow cat , magnaflow catback , and 2 1/4" pipe from header to cat to cat back
motor has 101,800 miles on it , trans(AUTO) is fairly weak , but still shifts good
ive got the gm s/c injectors (new) , fuel pump was replaced with new GM pump in december along with fuel pump , im running a mix of 101 and 91 , about 50/50 mix , any more of the 91 and the knock retard kinda goes wacky , but mostly at part throttle , also the fuel pressure does stay constant , and does go up and down with like its susposed to
so any ideas to get the afr into the 12 range ??
on to the rest of the info
times were in the range i was hoping for , although i was kinda hoping to break into the 14's , but the temp stayed to high to long
i got some bugs i need to find , and get the afr in the 12 range , after i turned the pressure up some , it ran a little smoother
first pass , with very brief cool down
r/t .023
60ft 2.327
330 6.515
1/8 9.967
mph 71.96
1000 12.955
1/4 15.530
88.67
2nd pass , longer cool down
.176
2.234
6.325
9.702
73.47
12.635
15.165
89.82
3rd , about same cool down time
.025
2.241
6.359
9.735
73.20
12.677
15.192
90.90
4th , short cool down , bumped fuel pressure up
.163
2.187
6.276
9.663
73.13
12.610
15.156
90.01
5th , longer cool down ,
-.071 , yes red light , if you dont redlight you aint tryin'
2.478 smoked um good , and pedaled it
6.622
9.989
73.73
15.404
91.69
6th , ran 5th got right back in lane
.038
2.250
6.309
73.30
12.593
15.107
90.36
Try switching out the injectors for ford stlye ..red tops. I started with gm SC injectors also and could not achiev a rich AF ratio and got ALOT better with the red tops. I know there supposed to be the same size in lb, CC....but it worked for me.
GM S/C injectors = 29lb/hr or 310cc/min
Ford Red Top = 30lb/hr or 320cc/mm
While running a 12:1 AFR is safer, its going to make you slower.......... running leaner makes more power.
I say throw in those 'other' injectors you have laying there......
SPD RCR Z -
'02 Z24 420whp
SLO GOAT -
'04 GTO 305whp
W41 BOI -
'78 Buick Opel Isuzu W41 Swap
i guess ill have to try the s/c'd cobra injectors ive got
id like to keep the a/f in the high 12's
what about the 380cc GTP injectiors?
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
the 39 pound cobra injectors ive got have the same plug , but i have modify the cover a little on the plug , so the plug snaps in
all the gtp injectors ive seen have the large plug like the 98-older injectors , and right now i dont wanna cut and splice in new plugs , atleast the 1's all the gtp guys have here
brian told me that the 00 and newer were a direct replacment for my 02....
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
i got a set of 01's from a guy and they had the bigger connector , the 98 older style
that is why i ende dup getting the cobra s/c injectors that and i got them dirt cheap for all 8 , LOL
