Ls1 Leaning Out DESPERATE!
Thread Starter
Staging Lane
Joined: Nov 2017
Posts: 60
Likes: 1
Ls1 Leaning Out DESPERATE! HI all I am having problems with my Ls1 383. I have been trying to tune my VE table but as soon as temps rise first bank two starts leaning out then bank one follows. Its really strange because it only happens while cruising at approx 2500rpm. As soon as I put my foot into it the mixture comes back up. During PE the o2s lock together and afrs are good although Im still tuning. I am also having lean tip in and tip out problems as you'll seen in some logs I post. I have done all the usual air leak checks, fuel pressure, checked my 02s and my wideband for accuracy.I assume my injector data is good. Ill post my tune if someone wants to have a look.
Speed Density Open Loop
Ls1 block
4" crank, 3.905 flat tops approx 11.5:1 static comp
Cam is Hydraulic Roller 248/258 112lsa .620 .620 lift
Hand ported 241 heads MLS head gaskets
FAST 102 manifold and 102 throttle body
1 7/8 long tubes and twin 3" exhaust
42lb Bosch 9202100 green giants, Walbro 255 intank 58psi fuel pressure
NGK tr6 plugs
Premium unleaded 98ron (Australia). I guess that's similar to 92 or 93?
98 Tune WOT VE Adjustment.hpt
Long Drive Part Throttle No Leaning.hpl
Short Drive Lean Bank 2 o2.hpl
Short Drive Both Banks Leaning.hpl
Cheers!
Speed Density Open Loop
Ls1 block
4" crank, 3.905 flat tops approx 11.5:1 static comp
Cam is Hydraulic Roller 248/258 112lsa .620 .620 lift
Hand ported 241 heads MLS head gaskets
FAST 102 manifold and 102 throttle body
1 7/8 long tubes and twin 3" exhaust
42lb Bosch 9202100 green giants, Walbro 255 intank 58psi fuel pressure
NGK tr6 plugs
Premium unleaded 98ron (Australia). I guess that's similar to 92 or 93?
98 Tune WOT VE Adjustment.hpt
Long Drive Part Throttle No Leaning.hpl
Short Drive Lean Bank 2 o2.hpl
Short Drive Both Banks Leaning.hpl
Cheers!
