Yes - the tune would (should) delete codes associated with deleting any part of the exhaust enhancements.Wanted to know if just removing the catalytic converter would throw codes and would their be any benefits aka Mpg would it need a tune
Sorry I wasn't clear in my post. They don't sample my exhaust. The vehicle just gets plugged into the OBDII port for active fault testing. My main concern was that if I go this route, I don't get a CEL. As long as the light is off I'm good.I expect there's no way you're going to pass an emissions test where they actually sample your exhaust gas if you're dpf isn't there and adblue isn't functioning. The only reason all that stuff is there to begin with is to comply with emissions standards. Now, I have lived in areas where the "test" only consisted of checking for active faults without actually checking the exhaust gases. I suppose there's a chance you could pass that sort of check if the person doing the test is totally nose-blind. I can tell you the the diesel exhaust smell is very strong once the dpf and adblue are gone. I did the malone delete last summer on my 2009.
Thanks for the information. Looks like everybody that has this setup has some different experience/result. I'll have to think about this. I have another 20k miles before my emissions components are out of warranty. It'll take me another 2 or so years to hit the 20k so we'll see. I would do it earlier if I saw more benefits. But losing possibly 3mpg on the highway is not cool. Doing like 70-72mph with no wind I bested 31.5mpg. Full tank and only myself in the vehicle. I took a road trip to Virginia Beach last year with my wife and we averaged 28-29.5.I've never had my vehicle tested that way since performing the delete, so while it makes sense that you would be ok with the correct tune, I can't say for sure.
I have mixed feelings about the delete/tune to be honest. The diesel smell is very strong if you're sitting in traffic and like having your windows cracked as I often do. I hated it at first but I'm slowly growing accustomed to it. I still haven't been able to get my exhaust sounding how I would like it to. I don't mind the bit of extra growl when I get on the throttle, but I am having trouble eliminating some resonances at 1700 and 2000 rpm. That's driving me a bit crazy. I do notice an increase in power. It pulls hard between 2000 and 3000 rpm, especially in 3rd and 4th gear. My fuel economy is actually worse by 1.5 mpg for city driving and as much as 3 mpg on the highway. I'm still working with Les at GDM to try to figure this out. The tune I got was a custom tune as it needs to account for the lack of hardware in the exhaust system now.
I plan on waiting until my emissions warranty is out. But it looks like since last year some good progress has been made. I'll end up doing it as a preventative once 80k hits.I honestly wouldn't do it given that you still are under warranty on your emissions components. The only reason I did it is because my dpf failed and I opted to do the delete instead of paying ~$3k to replace it. In that circumstance, I don't regret doing the delete since I don't have to worry about any of that stuff causing problems in the future. Plus, I'm confident that with enough patience and time, we can figure out what needs adjusting to help my fuel economy.
On that note, has anyone else that has done the delete on a 2009-10 had this problem. Any feedback is most appreciated.
+1......I would tune first, then remove the DPF soon after the tune as the DPF will not be able to actively regenerate. All the sensors and urea emitter stay connected. Sensors in-line of the exhaust and the urea emitter mounted external. Although the sensors and urea emitter are tuned out the ECU still needs to "feel" that they are there/present or you'll get fault(s).I imagine removing the dpf before flashing the tune would be the same as if your dpf went bad and would put the car into limp mode (that's what my Touareg did when things went bad). The rest of your questions depend on which tuner/kit you decide to go with and would be good questions for those appropriate parties. For me, my new exhaust has bungs for all of the sensors and also has a "dummy" mount for the adblue injector.
Welcome.....I feel the the DPF and EGR delete has yet to be fully optimized and it's potential fully realized. Someone with a more indepth understanding is appreciated.Hey guys, I'm finally signed up here. I am still learning what is allowed of a vendor on this site, so I hope I don't step on any toes. If you guys have any questions on the subject of this thread, I can most likely answer it all for you.
Welcome.....I feel the the DPF and EGR delete has yet to be fully optimized and it's potential fully realized. Someone with a more indepth understanding is appreciated.