Why would it only happen after the tune though? If I untune it, it won't do it. I'm not saying you're wrong, but it doesn't make sense to me.

It honestly sounds like it could be valves though because it's a pretty uniform sound each time.

 

Because of the changes to thethe spark, fuel mapping and timing curves made by your tuner. Tune for 91 octane and run a tank if premium through it. Valve ping will go away and if you can keep your foot out of it your fuel economy will improve.

 

I can certainly try that and see what happens. Though I thought I heard 91+ octane isn't good to put in a 4.7?

What would cause the premium to fix these issues?

(sorry for any stupid questions)

 

Just got my Superchip flashpaq installed took like no time at all just took the preset performance tune but still noticeably different. LOVE IT !

 

I saw someone with an 2008 Ram Hemi on here with a Superchips 93 octane tune in their sig. I thought only a 91 octane tune was available for the 2008? Is there a way to get a 93 octane tune for a 2008?

 

No such tune. Probably put in sig because in various parts of the country you can only get 93, not 91.

 

So I updated the tuner since last post and the rpm surge is gone..what I have noticed is my truck feels slower with the 91tune with 93octane on the low end than it did on stock..stock I could spin my tires bout ten feet..now not so much..data logged today at 15.7 on 91..before update I was 15.28 on tow tune...wtf...87 is more aggressive than 91 with latest update..anyone else prefer the 87tune

 

So I hit my truck with the 87 octane program with my cortex. The very first time I drove it I could smell what smelled like a hotter than normal catylytic(sp?) converter when i got home.
I just wanted to try it then I took the program out. Since I got my gears changed last wednesday I re entered the 87 program and drove it for a few days. twice when i returned home from driving i noticed smoke coming up and out from behind my drivers front tire. It didnt smell like oil, or like a fluid leaked onto a hot exhaust or anything. It reminded me of having a new exhaust installed with that oily coating on the pipes and stickers on the pipes and mufflers and then taking it out and getting it hot for the first time.
I looked under the truck and the Y pipe was radiating hottness....you know...that haze you see from being very hot.... this is the only thing that seems feasible. But depending on how much i drove it didnt do it every time.
Is this normal????

Everything else was fine. Truck ran fine at all times ect... didnt guzzle as much gas as i expected ect...


Also....What would the tow tune do different than the 87 tune?

 

Most days I can't afford 89 or 91 octane gas , But when I can , I use 89.. Most days I run 87 Octane in my 2004 Hemi Motor. . I can't tell one bit of difference between 87 and 89 , and if there is a difference between the way my motor runs on 91 , I haven't ran enough through it to tell that either.. There is one station here in town I can't buy gas from , every time I put their gas in my truck . It loads up after I let it Idle for 5 minutes or more , I have to floor it for a second to clear it's throat..It's the cheapest place in town , but my truck hate that fuel..

 

Does anyone have any experience with the Superchips VIVID PAQ Linq? as compared to the 3865 flashpac? i have a android phone so all i would need is the Linq to use the Vivid at only $50 more than flashpac not sure what one i should get for my 5.7?