Need some help with Calc VET

[Supercharged111]

Shouldn't the iat sensor account for that?

[joecar]

IT did change the VE quite a bit. Higher numbers mean more efficient and more power? Cause thats what i take it from what im seeing.

Higher numbers mean greater cylinder airmass, this means more torque...

( torque follows VE table... the VE table we have in g*K/kPa is actually cylinder airmass normalized for pressure and temperature )

and of course power is the product of torque and engine speed

( HP = TQ(ftlb) x RPM / 5252 )

[joecar]

Yes, IAT should have taken care of that...

let's go thru the log.

[HellKnightHicks]

Just got the exhaust together and my hearing back been pretty sick and had pressure in my ears. Horrible tinnitus.

Whats next on our list for tuning this puppy.

[joecar]

Get well.

Take another log to see what it's doing.

[HellKnightHicks]

96 White truck _0029 - Spark Restored.ctzMiss fixed.efi

Latest tune and log using that tune.

Got the pan Evacs in will be installing them in a week or so in order to get the pcv out of the intake.

[joecar]

When tuning in OL:
your B4206 is enabled, the PCM will use STFT to trim any stoich cells in B3605... so for tuning disable B4206.


VE: the upward lump at 400 rpm 45-50 kPa can't exist, so try flattening it and see if it comes back (in which case, if it did come back, you would raise the surroundings).

MAF: those bumps can't exist, smooth it to fit the surrounding curve and see if they come back.

[joecar]

B3609: I usually set this table to 0.050 or zero.

[joecar]

Log shows LTFT2 going positive... check for airleak on bank2 (at exhaust/NBO2, or at intake manifold ports)...


hmmm, HO2S21 does not look correct... swap NBO2's left/right and see if problem follows NBO2.

[HellKnightHicks]

When tuning in OL:
your B4206 is enabled, the PCM will use STFT to trim any stoich cells in B3605... so for tuning disable B4206.


VE: the upward lump at 400 rpm 45-50 kPa can't exist, so try flattening it and see if it comes back (in which case, if it did come back, you would raise the surroundings).

MAF: those bumps can't exist, smooth it to fit the surrounding curve and see if they come back.

B4206 - Disabled

VE- Section lowered

MAF- I smoothed some spots but I really dont see any bumps. I have applied modifications on a per tune log update.

I thought bank 2 going up to 10% was odd. Sometimes there's a miss under certain conditions Im assuming its overfueling bank 2. I have a miss and somtimes smell the fuel

I have an extra Narrow band sensor its old but may be worth swapping out. May just disconnect it before driving to work tomorrow. There are new narrow band sensors in both banks I have checked the header gasket but not the collector gasket thoroughly for leaks.

Thanks for the tips. I knew there was more refinement i just didn't know where to go from here.