Question about my ECS tune
Thread Starter
Racer
Joined: Jan 2015
Posts: 486
Likes: 74
Question about my ECS tune
Had American racing LTs with cats and tune, but now have no control of my NPP exhaust, its open all the time. Dont get me wrong the car sounds wicked and runs great, but i need to be able to lower the db level at times.
Help Doug
Im close to their shop so im not worried, just want to know what step to take here.
Help Doug
Im close to their shop so im not worried, just want to know what step to take here.
Intermediate
Joined: Jul 2011
Posts: 42
Likes: 2
Had American racing LTs with cats and tune, but now have no control of my NPP exhaust, its open all the time. Dont get me wrong the car sounds wicked and runs great, but i need to be able to lower the db level at times.
Help Doug
Im close to their shop so im not worried, just want to know what step to take here.
Help Doug
Im close to their shop so im not worried, just want to know what step to take here.
MagnaFlow just came out with their new muffler that works with the stock exhaust flap control via the NAV.
Safety Car
Joined: Sep 2006
Posts: 4,364
Likes: 408
From: Greer, SC
Had American racing LTs with cats and tune, but now have no control of my NPP exhaust, its open all the time. Dont get me wrong the car sounds wicked and runs great, but i need to be able to lower the db level at times.
Help Doug
Im close to their shop so im not worried, just want to know what step to take here.
Help Doug
Im close to their shop so im not worried, just want to know what step to take here.
Melting Slicks
Joined: Jan 2011
Posts: 2,195
Likes: 19
Had American racing LTs with cats and tune, but now have no control of my NPP exhaust, its open all the time. Dont get me wrong the car sounds wicked and runs great, but i need to be able to lower the db level at times.
Help Doug
Im close to their shop so im not worried, just want to know what step to take here.
Help Doug
Im close to their shop so im not worried, just want to know what step to take here.
Thread Starter
Racer
Joined: Jan 2015
Posts: 486
Likes: 74
All changes as far as I know were done with the tune, so I hope Doug remembers if that is what it is before I start climbing under the car looking at cables haha
Drifting
Joined: Jun 2007
Posts: 1,425
Likes: 238
From: Macomb MI
A tune doesn't alter the NPP functionality - at least none that's ever been reported. I'd check the fuse as mentioned above or look at the connectors at the actuators.
Dazed Confused & Verklemp
Joined: May 2008
Posts: 1,398
Likes: 109
From: Naples, FL & Clear Lake, IA
Once you figure it out, you may want to do what some of us have done and add an on-off manual switch to the NPP circuit. That way you can be a badass when you choose!
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Thread Starter
Racer
Joined: Jan 2015
Posts: 486
Likes: 74
Thanks Higgs, fuses are fine, checked those along with the wire connections . Doug said he will reload my factory tune and see if that has a result and then go from there. This one has me scratching my head.
Thread Starter
Racer
Joined: Jan 2015
Posts: 486
Likes: 74
Yes, first thing I checked. It's been this way since Carlisle and it's either something disconnected that I can't find, or when the afm valves are made to be open all the time as the tune was set up, affected the NPP for some reason even though everyone says it shouldn't. Could be a change from '14 to '15 models . Mines a 15
Race Director
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
if your npp valves are disconnected there should be a code that cannot be disabled through the ecm, which is all a tune affects (and the tcm). if there is no cel, i would think everything is connected properly.
so i guess i don't know what it is, let us know when you find out.
so i guess i don't know what it is, let us know when you find out.
Thread Starter
Racer
Joined: Jan 2015
Posts: 486
Likes: 74
Ok, so the origional tune is back in, and as we all thought, still no NPP function. No codes in the system, so to the dealer it goes. Will post when its resolved and what is was in case it will help anyone else. Then off to ECS for some boost �� right after.
Thread Starter
Racer
Joined: Jan 2015
Posts: 486
Likes: 74
Update... Well dealer said the the control module (one of the ones in the hatch that controls the valves has a weak voltage..... Gotta bring it back for them to hunt the problem. Any ideas anyone lol? I'm gonna check the fuse box connections under the hood ( the Lego blocks) since they were removed and reinstalled for the headers.
Thread Starter
Racer
Joined: Jan 2015
Posts: 486
Likes: 74
Problem was found and fixed. It appears that when I had the ARH headers installed at Carlisle, that when they were putting the fuse box back together, they bent 2 pins. Im picking it up tonight. Im happy that its fixed, not happy it cost me another 200 dollars to fix an install problem.