Derringer vs emissions warranty

[rickinAZ]

In a few months I'll be at the 60 month mark and the powertrain warranty will be expired. I'm still counting on the eight-year emissions warranty to cover expensive repairs like DPF replacement. Magnuson-Moss (and cynicism) aside, how likely is it for Jeep to deny coverage on DPFs if a Derringer is present? I can understand the added boost stressing the powertrain, but the emissions system should be not impacted. Am I wrong?

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[grimmjeeper]

If you have a problem with the emissions, take the Derringer off. It leaves no trace behind that it was installed.

 

[rickinAZ]

If you have a problem with the emissions, take the Derringer off. It leaves no trace behind that it was installed.

I'm not worried about passing emissions test, I'm worried about warranty denial in the case of a costly DPF failure. I can't imagine that the 10% extra boost stresses the DPF, but it makes a handy excuse for Jeep to hide behind. I totally agree that a powertrain failure can be blamed on a Derringer, but my powertrain warranty is almost over and I have three more years of factory emissions warrany covering the DPF. That next three years is what I want to preserve, hopefully while enjoying my Derringer.

 

[grimmjeeper]

I'm not worried about passing emissions test, I'm worried about warranty denial in the case of a costly DPF failure. I can't imagine that the 10% extra boost stresses the DPF, but it makes a handy excuse for Jeep to hide behind. I totally agree that a powertrain failure can be blamed on a Derringer, but my powertrain warranty is almost over and I have three more years of factory emissions warrany covering the DPF. That next three years is what I want to preserve, hopefully while enjoying my Derringer.

Same solution works for the dealership and for emissions inspection.

If you have a problem, take the Derringer off before you take it to the dealer. There's no way they will know it was there. Problem solved.

 

[calemasters]

.... how likely is it for Jeep to deny coverage on DPFs if a Derringer is present?

Very.

 

[rickinAZ]

Same solution works for the dealership and for emissions inspection.

If you have a problem, take the Derringer off before you take it to the dealer. There's no way they will know it was there. Problem solved.

Except...the FRP is a bitch to get off, and I'm afraid that too much on/off will tempt fate on breaking the tabs. The FRP especially requires a lot of probing with a pick.

Much like the Tazer extension cable eliminating the need to access the SGW, I wish there were 12" extensions available for the MAS and FRP. Then, removing the Derringer would be as quick as one could remove the plastic engine cover. I would have paid $100 for a pair. If someone was good at splicing cables they could buy a Banks replacement harness and Frankenstein their own extensions.

 

[GSLSE21B]

Factory tune targets 18.85:1 AFR and max 1400F EGT at full load . Derringer drops afr into 17:1 range and temporarily raises egt limit to 1530F .. they can easily say that is above the factory limits .

 

[toolaide4fit]

Except...the FRP is a bitch to get off, and I'm afraid that too much on/off will tempt fate on breaking the tabs. The FRP especially requires a lot of probing with a pick.

Much like the Tazer extension cable eliminating the need to access the SGW, I wish there were 12" extensions available for the MAS and FRP. Then, removing the Derringer would be as quick as one could remove the plastic engine cover. I would have paid $100 for a pair. If someone was good at splicing cables they could buy a Banks replacement harness and Frankenstein their own extensions.

I broke the tab off my FRP the first time I installed it. I have had it off and on probably 8 times. I take it off before I take it in to the dealership.

Just recently had issues with my Derringer, kept getting the !D-ERR while driving. I delayed months calling Banks. They were awesome, did some trouble shooting and the determined the Derringer was bad and needed to be replaced. I sent it in and I am waiting for the replacement.

I have lost about 2 miles to the gallon and the lose of power is sad. I have had it for several years and won't ever go without it again. I have gotten good at getting it in and out. Noticed the wiring on the Mass Airflow Censor is worn and some exposed wiring.

 

[ALeeL]

Factory tune targets 18.85:1 AFR and max 1400F EGT at full load . Derringer drops afr into 17:1 range and temporarily raises egt limit to 1530F .. they can easily say that is above the factory limits .

This!!! I know a lot of people out there think that the dealership cannot tell if you take it off, but most of them do not know that the ECM records things like max limits.

@rickinAZ, whether they find out or not depends on a few factors. When the technician gets the work order for your vehicle, they will diag it. Since warranty does not usually pay much for diag time, they will likely want to do it as quickly as possible so you may have a case where the tech will not even bother digging into whether any mods caused the damage if it is not clearly evident(ie. still being installed).

The tech will then submit his diagnosis to the warranty clerk who will in turn submit it to the manufacturer for approval. The manufacturer can either immediately approve the repair or request further diagnosis such as pulling the data from the ECM. If they do this, then you are screwed. They will know that the max allowable limits have been passed regardless if you take it off before hand or not.

So if you take off the Derringer, there is a chance that you can go through the whole process without anyone finding out, but they can ultimately tell if they do enough digging.

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