Post by
canadians14det »
https://forums.nicoclub.com/canadians14det-u26788.html
Sat Nov 12, 2005 2:18 pm
Hey guys as the topic says i've been looking around for the in/out settings for a Cobra MAF but i have not been able to find them so far. I looked in the instruction manual listings for them but they were not there also(Ford go figure).
Also i've been looking for someone with the same setup as me so that i have an idea for my base tune for the SAFCII when its installed. Setup is:
JWT ECU tuned for below
50 # (555cc roughly i think) MSD injectorsCobra MAF10 - 12 psi expected boost pressuresstock internals
other semirelevant details are
T3/T4 turbo 50 trim .63 A/R stg III wheelrecirced blowoff valve(no DEC AIR settings needed)JWT fuel railstock FPREGT gauge for tuning only (dyno runs planned)
So far i've only been able to find settings with the Z32 MAF and mostly 370cc injectors/stock MAF
The reason i need the SAFC is because with my JWT ecu tune my car becomes extremely rich once boost starts. The AFR's are below:
2500-3000 --- 12.5 3000-3500 --- 12.03500-3750 --- 12.0 - 10.53750-4250 --- 10.54250-on --- << 10
from 4250 onwards the AFR's were so low that the wideband O2 at the dyno couldn't even read them. Correspondingly the torque dropped steadily down at 4000 rpm dropping from 270ft/lb at 4000 to 175 ft/lb at 6250 rpm.These runs were all done at 10psi.
I plan on trying to keep my AFR's at around 12 throughout if i can so i only plan on removing fuel after 3500 rpm on the high throttle maps. I don't know about the low throttle maps i'll wait for a dyno for that one.
One other thing to mention my wastegate return to the downpipe has a leak in it, could that be causing problems for the O2 sensors in the downpipe?
So is the drastic loss of torque due to the dropping AFR's or the leak in the downpipe or a combination of both???
Any options/suggestions are welcome