To 2bar or not
I have a lq4 swapped STS turboed reg cab truck I want to tune. I run about 7 psi and I think I want to keep my maf. Will a 2 bar map help me tune this thing or should I keep the 1bar since I am keeping the maf? I am pretty green to this tuning so please explain your anwers fully. Thanks, Rodney
00 GMC,LQ4, Jarrett Faggart pistons, callies rods, Ebay studs, LS9 gaskets, 317's, KBRacing KIT, PT76/75, treadstone intercooler,Eboost2, dual walbro, FIC 75lb, br7ef, Trutrac, Shaftmasters Shaft, 3.5" DP w/4" magnaflow dumped, turbo blanket, Circle D 3200, Jake's built 4l80w/brake, hydroboost, EFILive v2,Lunati dual springs,222/226 cam, cal-tracs, QA1 front shocks, Street/strip Bogarts,Drum swap, Alky-control,MSD8733 936 HP to the tire DD.
Absolutely--Get the 2 Bar MAP sensor. There is no reason to have EFILive and not give the PCM the correct information it needs.
Jeff
98 GMC RCSB 2WD, Internally stock 305 w/Twin T-3 junkyard Turbos,4L80e,Ramjet intake,42lb.inj., 0411PCM, COS3,4675LBS w/me in it. Best Time on 5 passes-13.01@110
Can anyone tell me whats involved? Will it change my current tune? I know this has all been done many times. Anyone???
00 GMC,LQ4, Jarrett Faggart pistons, callies rods, Ebay studs, LS9 gaskets, 317's, KBRacing KIT, PT76/75, treadstone intercooler,Eboost2, dual walbro, FIC 75lb, br7ef, Trutrac, Shaftmasters Shaft, 3.5" DP w/4" magnaflow dumped, turbo blanket, Circle D 3200, Jake's built 4l80w/brake, hydroboost, EFILive v2,Lunati dual springs,222/226 cam, cal-tracs, QA1 front shocks, Street/strip Bogarts,Drum swap, Alky-control,MSD8733 936 HP to the tire DD.
You will need to rescale C6301 to 190 for the 2 bar MAP sensor. COS3 would also be a good upgrade for your boosted application.
Jeff
98 GMC RCSB 2WD, Internally stock 305 w/Twin T-3 junkyard Turbos,4L80e,Ramjet intake,42lb.inj., 0411PCM, COS3,4675LBS w/me in it. Best Time on 5 passes-13.01@110
you can remove your MAF and just install a IAT sensor along with the 2 Bar MAP and get to tuning. Thats what i did and its very simple to do.
Anyone have the part number for a 2-bar MAP sensor that fits the LS1/LS6 style intake?
I don't want to ditch my Maf, I like my stock driveability. Maybe I should do what you suggest and if I don't like the results I could just go back to my saved tune. There is a happy middle ground somewhere I think. seems like I should be able to tune the auto ve up to the point of 0psi. then use to 2bar to take over from there. keep the info coming ...Someone will get me straight.Originally Posted by nonnieselman
00 GMC,LQ4, Jarrett Faggart pistons, callies rods, Ebay studs, LS9 gaskets, 317's, KBRacing KIT, PT76/75, treadstone intercooler,Eboost2, dual walbro, FIC 75lb, br7ef, Trutrac, Shaftmasters Shaft, 3.5" DP w/4" magnaflow dumped, turbo blanket, Circle D 3200, Jake's built 4l80w/brake, hydroboost, EFILive v2,Lunati dual springs,222/226 cam, cal-tracs, QA1 front shocks, Street/strip Bogarts,Drum swap, Alky-control,MSD8733 936 HP to the tire DD.
I am using 12580698 MAP sensor (Now 12615136)
2003 Chevy S10 4.3L LU3 LS1B Auto
48 LB injectors
Race Proven Motors 2114 intake
T70 turbo.
why you against ditching the MAF? You won't know the difference having it or not.
I'm running Custom Operating System 3, tuned open loop speed density.
its leaned out while cruising so I'm gettin better gas mileage, and its simple to tune.
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