Frustrating Flat Spot/Popping Through Intake

[mattmonaro]

2001 LS1 6 speed 228/232 cam stock intake and throttle body has a slight flat spot off idle and eventually will pop through the intake.
Ive added fuel and tried different things and it doesnt change.VU SS Ute BLK SD.hptNeil VU POP.hpl

[mattmonaro]

2001 LS1 6 speed 228/232 cam stock intake and throttle body has a slight flat spot off idle and eventually will pop through the intake.
Ive added fuel and tried different things and it doesnt change.VU SS Ute BLK SD.hptNeil VU POP.hpl

Anyone ?

[GHuggins]

If it's not a broke valve spring, bent valve or something of that nature, I would try injection timing. Just a heads up though... It shouldn't be popping through the intake with anything tune related. Now if it's popping through the exhaust, then yes injection timing for your cam. Your most likely looking at valve train, wrong mechanical timing or screwed up map or something like that.

I know it doesn't help much, but should at least give you something to look at? Then I guess a simple question. When did this start? Right after the cam install? Or out of the blue just recently? Just some thoughts...

[68Camaro]

If you don't find any mechanical problems you might check and make sure your fuel pressure isn't dropping (fuel system troubles)

[waynehartwig]

What LSA is the cam? Popping through the intake could be a lean condition

[mattmonaro]

If it's not a broke valve spring, bent valve or something of that nature, I would try injection timing. Just a heads up though... It shouldn't be popping through the intake with anything tune related. Now if it's popping through the exhaust, then yes injection timing for your cam. Your most likely looking at valve train, wrong mechanical timing or screwed up map or something like that.

I know it doesn't help much, but should at least give you something to look at? Then I guess a simple question. When did this start? Right after the cam install? Or out of the blue just recently? Just some thoughts...

Brand new valve springs were installed when the cam went in. Doesnt miss at idle, goes hard past flat spot and revs to 6900rpm easily

[mattmonaro]

What LSA is the cam? Popping through the intake could be a lean condition

228/232 597 lift 112 LSA
I richened it up everywhere thinking the same thing myself and it made no difference at all.
What i did find is the timing retards as soon as you put your foot down on the throttle at around 1200-1500rpm and it will come down to 15 degrees or less and i am commanding it to have around 35 degrees in that area.

[waynehartwig]

228/232 597 lift 112 LSA
I richened it up everywhere thinking the same thing myself and it made no difference at all.
What i did find is the timing retards as soon as you put your foot down on the throttle at around 1200-1500rpm and it will come down to 15 degrees or less and i am commanding it to have around 35 degrees in that area.

What do your plugs look like? They look lean/rich?
No idea on the timing without seeing the tune. Could be anything though.. Torque management, timing table, etc.

[mattmonaro]

Plugs are clean and nice colour around electrode and a bit rich on the base which is what i expected because i richened it up quite alot.
Tune and log is at top of page. All torque management is zeroed

[mattmonaro]

What do your plugs look like? They look lean/rich?
No idea on the timing without seeing the tune. Could be anything though.. Torque management, timing table, etc.

Neil VU Adapt change idle.hplVU SS Ute BLK SD.hpt