HemiFever Tune

[cullen17]

Let me just start off by saying that if your thinking about buying a tuner do it asap! You wont regret it! I've been thinking about a tuner for a while now and finally got the money for it and was ready to buy it. My dad was worried it was going to be like the tuner he got for his dodge back in like 2004 that sucked and he was trying to talk me out of it. I got the DS intune and installed the default 91 octane tune which was an improvement over the stock. Last night Sean from Hemifever contacted me and got me one of his 93 octane tunes so i installed it. After driving the truck a few times i am so happy i went ahead and got the tuner! It makes such a difference over stock i am so happy. I'm not sure what all he did but man it is incredible the shifts are so much firmer than they were before(although not as firm as i would like it to be) and the throttle response is WAY BETTER! So incase anyone couldnt tell im really glad i finally got the tuner and for anyone that cant decide if they want one or not just go ahead and get one. You wont regret it!

 

[audio1der]

I believe you. but I just can\'t bring myself to pay for 91+ octane fuel when the damned thing uses so much of it. We don't see near the mileage figures some of you do, so it would put me in the poorhouse filling it up, esp. when towing at 9MPG all summer.

 

[cullen17]

I get about 16mpg average according to the display on my dash. atleast thats what i got before this tune. we will have to wait and see which way it goes now..

 

[WhiteExpress]

I just have the canned DS 91 Octane tune right now, It's alright, trans certainly feels better and more... decisive. I'd run the 93 tune, but you can't buy that high of octane up here. ********.

 

[cullen17]

Why not get a custom tune from HF? im sure even a custom 91 tune would be alot better than the canned 91 tune

 

[DavidRam]

Awesome man! Good to hear!

 

[012RAMbo]

I believe you. but I just can\'t bring myself to pay for 91+ octane fuel when the damned thing uses so much of it. We don't see near the mileage figures some of you do, so it would put me in the poorhouse filling it up, esp. when towing at 9MPG all summer.

I guess at 9 mpg, that is pretty rough. But for normal conditions, most of us get around 16-17 average. The difference between recommended mid grade and using Premium is only about $4 a tank.... My wife flips out when gas goes down 10 cents. I tell her congratulations, you just saved $1.60 on a tank. Then she says " Well since you put it like that.." lol

Sorry to go off topic OP. I guess my point is...I love my HEMIFEVER too!! haha. Well worth the extra to me.

 

[nolimits76]

I guess at 9 mpg, that is pretty rough. But for normal conditions, most of us get around 16-17 average. The difference between recommended mid grade and using Premium is only about $4 a tank.... My wife flips out when gas goes down 10 cents. I tell her congratulations, you just saved $1.60 on a tank. Then she says " Well since you put it like that.." lol

Sorry to go off topic OP. I guess my point is...I love my HEMIFEVER too!! haha. Well worth the extra to me.

Agree!

Also, typically speaking I've seen slightly better MPG results with higher level octanes. Nothing to get all excited about, but in my case it about evens out the extra expense of the higher octane so it's more or less a wash.

 

[audio1der]

There's a local fellow I've been trying to meet to talk to about this, who claims the MPG claims are enough to even offset the higher cost whie towing! That would be ideal.

Don't any of you tuned guys worry that the changes made by any tuner/tune will decrease the lifespan of the truck?? I know the factory does what it can in the name of better mileage, but what about long life of components like engine and trans? My truck is a long term purchase.

 

[LaramieLimited]

On my 2012 with the things listed in my signature block, I average about 12-13 mpg and when I tow my 4,000 lbs boat it goes down to like 9 also and I cry, a lot lol
I am sure the hemifever tune will add some better shifting which will increase efficiency but I haven't pulled the trigger on it yet.

 

[kris319]

I believe you. but I just can\'t bring myself to pay for 91+ octane fuel when the damned thing uses so much of it. We don't see near the mileage figures some of you do, so it would put me in the poorhouse filling it up, esp. when towing at 9MPG all summer.

I got a 93 and an 89 octane tune from Hemifever. you could just use the 89 tune and you should still have noticeable difference on how the truck drives.

 

[Jmhm17]

There's a local fellow I've been trying to meet to talk to about this, who claims the MPG claims are enough to even offset the higher cost whie towing! That would be ideal.

Don't any of you tuned guys worry that the changes made by any tuner/tune will decrease the lifespan of the truck?? I know the factory does what it can in the name of better mileage, but what about long life of components like engine and trans? My truck is a long term purchase.

you have to understand the tune from the factory was not tuned for YOUR truck. it was tuned for 1 motor they dynotuned out side of the truck. the factory tune has A LOT of wiggle room so there are no issues from motor to motor, and its a "play it safe" tune with MPG/HP in mind to make the best of both worlds..

A motor is a motor, given the proper air/fule mixture and keeping it maintained it will run a long time, by slimming up on the slack left behind from the factory tune is not adding any stress to the motor. its just making parameters more precise where they would not be favored for the "general public" - for instance touchy throttle response, and stiffer shifting, these things would deter some from buying a truck as it would be seen as too rough of a truck to drive. Same reason why the TQ is soo slushy. changing these things would not ruin the truck they are just making it operate differently, but not in a way to push it to its limits.

the bolt ons sold for these motors (except a Supercharger) would function fine and not cause any ill effects or cause any damage over time. even with a stock tune and a TB for instance it would compensate the proper AFR and the truck would run safe, but breath better at the same time.

Dont think of modding as beating, its just picking up where the factory left wiggle room, weather it be cost or something that made the majority say hey this truck runs good the way it is, cause remember no one wants to buy a brand new truck and blow the tires off of it every time they hit the gas, and get thrown around with stiff shift points..

 

[Jmhm17]

Oh also HF makes an 89 tune. So you dont need to use 93 or 91. and the recommended octaine for this motor is 89, you should not be using 87. just going from 87 to 89 you will notice a difference once VVT kicks in with stock tune.. Motor is pulling timing like HOT DAMN with that **** gas

 

[mhb1638]

I dont see justifying a 400-600 tuner for the simple benefit of some "thrill" in the butt. These are 5K pound trucks, not 3500 camaros. A fill up is a fill up no matter how far you drive it. My truck has to ridiculous 36 gallon tank. Simple math if I just had to put in 30 gallons:

87 oct @ 3.40 X 30 = $102
89 oct @ 3.60 x 30 = $108
91 oct @ 3.85 x 30 = $115

So...in essense, paying an extra $13 a fill up, which fo rme is usually weekly (6-7 days) means roughly an extra $52 a month out of my pocket. Losing $52 a month, to me, doesn't equate to a $600 tuner with some beef in the getty-up factor. Just saying. Obviously the numbers will be lower with less gallons served and I get that. The difference at 20 gallons between 87 & 91 octane is $9. But you're still paying out more for the extra octane level regardless.

If I get 12-13 MPG (which is about right in the summer and extra AC/idle time I'm doing now):

12.5 mpg x 36g = 450 miles (if all things remain the same)

If somehow 91 octance grants 13.5 mpg, which I doubt:

13.5 mpg x 36g = 486 miles, or 36 extra miles which is roughly 2-3 gallons of gas.

Math isn't my strong suit, just tryign to sum this out.

 

[Jmhm17]

to each their own.

I get 18-23MPG and fill up 70-80 bucks a week with 93. and no way are you filling up 36 gallons every time you fill up. You must be on fumes, and live in a place with steep hills to be putting that much money in your tank a week with a 1500 w/ 5.7L.

I feel like if your getting 12-13mpg you have 4.10's with 38's, or you are flooring it everywhere. ease up on the right pedal and im sure it wont hurt your wallet as much.

and again 87 is NOT recommended for your truck..

Sorry OP for jacking this thread..

 

[ExpressRules]

to each their own.

I get 18-23MPG and fill up 70-80 bucks a week with 93. and no way are you filling up 36 gallons every time you fill up. You must be on fumes, and live in a place with steep hills to be putting that much money in your tank a week with a 1500 w/ 5.7L.

I feel like if your getting 12-13mpg you have 4.10's with 38's, or you are flooring it everywhere. ease up on the right pedal and im sure it wont hurt your wallet as much.

and again 87 is NOT recommended for your truck..

Sorry OP for jacking this thread..

If you read the information from RAM it states that they "recommend" 89, but 87 may be used. That a long way from saying 87 is not recommended. If the truck doesn't knock with 87 the only issue will be a slight drop in power. Obviously, if detonation is observed with 87 then 89 should be used. In normal tune that isn't going to happen. Have a tuner, then it is wise to put 89 and above in.

We all have our opinions, but one opinion isn't necessarily better then another.

 

[Jmhm17]

Not a long way away from saying "not recommended" at all. I have had many turbocharged cars and it says 91+ recommended, 87 may be used. This means if absolutely needed, then run 87 but its not recommended for performance/fuel economy. Basically saying, the performance is as advertised with the recommended grade fuel. "MAY be used" is saying NOT RECOMMENDING the use of...

Anyways.. I guess the moral of all this is you should of not bought a truck if your sore about putting gas in it. You did know what you were getting into before you bought it. With that said, and to get back on topic I too agree with the OP on his original statement regarding the HF tune. I have a thread very similar recommending this modification.

 

[mhb1638]

Sorry for the thread jack. I'm happy you like your tuner bud.

Note to the reply at hand, maybe you should read where I state on a normal fill up of about 20 gallons and also stated I'm idling allot with AC. And on base it'd stop and go. Don't be so touchy friend when I put basic details forth or judge other people s mileage before knowing the facts. Mileage is something I'm not complaining about. Just making a math scenario, sorry to you over logistics.

 

[BlownGP]

to each their own.

I get 18-23MPG and fill up 70-80 bucks a week with 93. and no way are you filling up 36 gallons every time you fill up. You must be on fumes, and live in a place with steep hills to be putting that much money in your tank a week with a 1500 w/ 5.7L.

I feel like if your getting 12-13mpg you have 4.10's with 38's, or you are flooring it everywhere. ease up on the right pedal and im sure it wont hurt your wallet as much.

and again 87 is NOT recommended for your truck..

Sorry OP for jacking this thread..

How in the hell do you get 23mpg? Down hill..loll

You can run 87 in these trucks. I've done a few times. To be honest I've have used 87, 89 and 93 in my truck since I got the tuner. Other than it being a little sluggish on 87. I didn't notice much of a difference performance wise.

I probably need a hemifever tune, but really don't care to go any faster at the moment. This truck is pretty quick as is. I will do it, just not anytime soon.

 

[WhiteExpress]

Why not get a custom tune from HF? I'm sure even a custom 91 tune would be a lot better than the canned 91 tune

Because money. I don't know that with a crew cab 3/4 ton 4x4 I'll ever notice 3-5 HP more.