Cammed Gen V idle issue - Help needed.

I'm not sure if the logs I've captured show an accurate representation. But I have had this issues since I paid the first tuner to tune the truck after the cam. Its sounds like a back fire/ Knock to me. The computer picks it up as knock and the timing sways.

I haven't been able to resolve this and have paid a couple of tuners and haven't had any luck.

I have have tried some idle tuning and idle Torque but it doesn't seem to make any difference.

Any help would be appreciated.
Log and tune attached.

Attachment 123791
Attachment 123792

what are the exact mods to the car

Duplicate

2.9L whipple supercharger.
-- smaller pulley 10psi~
ATI Balancer
160 Thermostat
BTR custom Torque Blower cam.
3200 Circle D stall
Stainless works Exhaust.
LT4 Injectors
LT4 HPFP
Lingenfelter CNC ported cylinder heads.
103mm Nick Williams TB

It looks like TQ management is pulling a lot of timing at idle. Im not sure why or how to fix that.

The ECU is calculating too much torque, probably from too much airmass. That is often the reason for TQ Management. Increase throttle scalar and manifold volume, reduce VVE and Virtual Torque in the idle area and see if that helps.

Quote:

---

Originally Posted by TriPinTaZ

The ECU is calculating too much torque, probably from too much airmass. That is often the reason for TQ Management. Increase throttle scalar and manifold volume, reduce VVE and Virtual Torque in the idle area and see if that helps.

---

I reduced the Virtual VE in that area and it resolved the issue.

Used Cylinder Airmass Gram to find the area. I had to massage it down a couple times.

Now the idle timing stays positive for the most part.

I generally -5 ftlbs across the cells near where It was idling then Extrapolate Coeficients.

Flash
Log
Flash
Log

repeate as needed.

I removed some of the other changes I had made in order to try to combat this.
- Increased External Load
- Modifications of Predicted and Immediate Idle Speed Control

Quote:

---

Originally Posted by HellKnightHicks

I reduced the Virtual VE in that area and it resolved the issue.

Used Cylinder Airmass Gram to find the area. I had to massage it down a couple times.

Now the idle timing stays positive for the most part.

I generally -5 ftlbs across the cells near where It was idling then Extrapolate Coeficients.

Flash
Log
Flash
Log

repeate as needed.

I removed some of the other changes I had made in order to try to combat this.
- Increased External Load
- Modifications of Predicted and Immediate Idle Speed Control

---

Do you mean you reduced the Virtual Torque in your idle area?

Quote:

---

Originally Posted by Haans249

Do you mean you reduced the Virtual Torque in your idle area?

---

Yes