i built a my turbo merge pipe without O2 sensor bungs and curious if anyone here drives around constant Open Loop? it's a front mount TC76 M6 TA and will be daily driven. anyone here know the pros and cons of constant open loop? any input would be great. thanlks
I wouldn't do that. No corrective actions in the PCM for anything is asking for trouble, bad efficiency or something bad.
2006 Tahoe
Iron ls2, built up 4l60e w/vig 3000 stall, 232/234 114, 4.30s, LTs, ORY NNBS intake and LS2 TB etc.
Fighting solves everything...
...except partial differential equations.
Click here to combine multiple VE Logs into one.
how does that make sense? ^
doesnt SD always run in OPEN LOOP? therefore you wouldnt be using your O2s?
2001 Camaro SS
SD doesnt use the MAF and as long as you have a wideband have your tune correct you can drive with the LTFT And STFT off,plus your cloosed loop enable tables set to 285,but why wouldnt you just weld a O2 bung into it and turn it back on after you tune your VE table? FYI i ran one summer in open loop to tune my car back in 2006
2000 Firebird,2002 O.S.,LQ4 370,Borg Warner S475,truck mani.,Eagle crank,Callies Compstar Rods,Wiseco-11 4.030 pistons 9.4:1 comp.,LS3CNC heads,LS3 intake,NW92mm throttle body,ID1000 injectors,BTR trunion upgrade,LJMS STG3 cam,LS7 Lifters,ARP Studs-bolts,Frozen Boost A to W intercooler,JGS 60MM BOV,2 40mmJGS Wastegates,4L80E trans wth segment swap,CircleD 3400 single disk,MOSER 12 3.31gears ,BMR K-Mem.,2 Walboro 450 pumps,Returnstyle fuelsystem MAGNAFUEL regulator.
LS1Tech sig KRAZY K 2000 TA
So correct me im wrong, but your saying to turn your O2s back on after you tune your VE? but if your in staying in Speed Density, why even bother?
Sound like the OP is running SD.
but please clarify, id like to hear you out. thanks man.
2001 Camaro SS
no SD is running no MAF
2000 Firebird,2002 O.S.,LQ4 370,Borg Warner S475,truck mani.,Eagle crank,Callies Compstar Rods,Wiseco-11 4.030 pistons 9.4:1 comp.,LS3CNC heads,LS3 intake,NW92mm throttle body,ID1000 injectors,BTR trunion upgrade,LJMS STG3 cam,LS7 Lifters,ARP Studs-bolts,Frozen Boost A to W intercooler,JGS 60MM BOV,2 40mmJGS Wastegates,4L80E trans wth segment swap,CircleD 3400 single disk,MOSER 12 3.31gears ,BMR K-Mem.,2 Walboro 450 pumps,Returnstyle fuelsystem MAGNAFUEL regulator.
LS1Tech sig KRAZY K 2000 TA
dont you run SD in open loop (aka no O2s)? am i confusing myself here?
so theres a OLSD & CLSD it seems like?
BUT why would running OLSD be an issue?
Last edited by sidewayz28; 04-19-2010 at 06:05 PM.
2001 Camaro SS
why would you the computer would no compensations in ope n loop
2000 Firebird,2002 O.S.,LQ4 370,Borg Warner S475,truck mani.,Eagle crank,Callies Compstar Rods,Wiseco-11 4.030 pistons 9.4:1 comp.,LS3CNC heads,LS3 intake,NW92mm throttle body,ID1000 injectors,BTR trunion upgrade,LJMS STG3 cam,LS7 Lifters,ARP Studs-bolts,Frozen Boost A to W intercooler,JGS 60MM BOV,2 40mmJGS Wastegates,4L80E trans wth segment swap,CircleD 3400 single disk,MOSER 12 3.31gears ,BMR K-Mem.,2 Walboro 450 pumps,Returnstyle fuelsystem MAGNAFUEL regulator.
LS1Tech sig KRAZY K 2000 TA
There is speed density closed loop and speed density closed loop. I personnaly use SDOL cause i use racing fuel and a good amount of nitrous. Its keeps things pretty much set and there is less chance of malfunction from a faulty maf or o2 this way. SDCL is good though cause u maintaing ur trims.
You mean closed loop SD and open loop SDOriginally Posted by spike
Speed density closed loop and speed density closed loop are the same
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