Eliminating LMM exhaust hiss with EFI [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: Eliminating LMM exhaust hiss with EFI


padsave30
03-10-2010, 07:28 PM
I am sure this has been asked before but I could not find it. How is this done... I currently have EFI in my truck with the DSP2 switch.

Would like to totally eliminate the hiss, is this possible?

Mitco39
03-10-2010, 07:32 PM
Set your vane position tables to about 10-15% under idle conditions.

padsave30
03-10-2010, 08:26 PM
Which table should I do this in? EGR is off.... So would i do it in the "Turbo Vane Target Position, EGR Off, Low Altitude"?

Also, how high in the RPM's should I make these adjustments? And how high on the mm3 side?



Thanks

Mitco39
03-10-2010, 08:34 PM
Do each of the altitudes as well as the transitions... you just want it to happen no matter what altitude you are at.

Tanc Crusher
03-10-2010, 08:35 PM
Just needs to be done from 0 to 800 RPM since idle is roughly 720RPM.

Brian

padsave30
03-10-2010, 08:41 PM
Thanks.

Also, to disable EGR, do I just open Parameters under EGR and select disable?

Mitco39
03-10-2010, 08:43 PM
Thats just the monitoring... you will need to change the temps at which the solenoid operates... IE set the max engine temp to like -40.

padsave30
03-11-2010, 07:38 AM
Thanks