LMM: Exhaust Cutout

[mwgasman]

It has been a few years since I did any EFILive tuning.

I believe on the earlier motors (LB7,LLY) You could have programmable ECM inputs/outputs so you could control nitrous/water/meth etc with the ECM.

I have an LMM. I don't really want to eliminate the DPF. Mainly because I like that it doesnt smoke AT ALL. I used to hate getting soot all over my boat or travel trailer. It also keeps the greenies quiet. I want more of a tune but I don't want to plug up the DPF.

My question is: Can I have an ECM output that could control an electric exhaust cutout placed ahead of the DPF/cat. I would like to use a DSP5 switch for stock/tow/race tunes and have a cutout opened when soot production would be up and have the cutout closed for stock tunes.

I should probably just leave this truck stock like I said I would, but there is no fun in that. My wife is going to be pissed about another tranny.

Mike

 

[HogAssWild]

i have never heard of this..

although i do know.... stock sucks

 

[duramaximizer]

I was thinking about this, why couldn't you just run a micro switch to the throttle peddle, then you could have it open automatically everytime you stand on it or TPS goes over 70%. I don't know how fast it would open and close though.:spit:

 

[othrgrl]

There is no DSP output on the LMM. Also the DPF parameters are only available in the base tune, so you either disable the DPF and EGT sensors, regen, ect on all of your tunes or none of them. You can have no DPF and still have really clean running tunes.

 

[whitetrash21]

There is no DSP output on the LMM. Also the DPF parameters are only available in the base tune, so you either disable the DPF and EGT sensors, regen, ect on all of your tunes or none of them. You can have no DPF and still have really clean running tunes.

x2.... got a couple nice tunes on my dsp that don't smoke at all except under heavy acceleration. Keeping the DPF is only gonna cost you mileage and a new DPF when that one wears out.... and they aren't cheap.

 

[duramaximizer]

You could still set the codes to not reported and still keep the DPF fully functioning. If the dpf happen to plug you just run the cut out until you can get the DPF fixed/regen/deleted.

Maybe I am wrong. You would just have to make sure to have things going the right direction when the regen is on.