Well , I think it is time for the hemifever tuning upgrade to my diablo sport programmer . I have been talking with Sean and sounds like I should see some noticeable improvements . I was curious if anyone else has done this and if the results were noticeable .
As far as a tuning goes, it will be about like the step up from the stock truck to the canned tunes when you get Seans tunes, he does very good work. His transmission tunes are also very solid still running mine with a different custom tune and it is awesome! You will definitely wonder why you hadnt done it sooner
That is a bit of a conundrum man... I know mine ran a lot, and that's understatement, better. It could easily be one of those quirky instances where you are the 1% idk man :4-dontknow:
How many times did he have you log and tweak? And are you putting your shift point to the same parameters
My MPGs actually got a little worse, even after the initial "wow factor" wore off. But regardless, the enhanced performance more than makes up for the decreased MPGs, IMHO.
Im not sure if its the tune or the truck but to this point I have not been impressed with the difference between sean's 89 and 91 tune. The 89 helped but wasn't what I was expecting. I switched to the 91 and felt no difference...maybe even lost some power.
Interesting. I feel a slight difference between the two; however, the one thing I DO notice with the 91 is that everything sounds louder. When I can afford 91, I run the 91 tune.
jharrram13, could it be that you have the 8 speed and maybe the tunes aren't dialed in just yet?
I'm in the same boat as you blowngp, every time I am ready to pull the trigger I read a thread like this. I guess the only way to really know is to try it out myself.
I don't have the 8 speed (wish I did). It almost feels like he forgot to do something on the 91 tune or something but you cant view current values only tweek them. I have no idea whats up with it only that Im not impressed with it. I think Im gonna go back to my 89 tune and play with that a little. I will say after I first put the 89 tune in every drive I took for the first 5-10 it seemed to get a little more power each time. I just ran a 6.52 0-60 last night with the 91 so Ill let you know the results after I go back to the 89.
I had another custom tune and switched to HF 2 months ago. I was running a 6.2 0-60 with the old custom tune. When I switch to HF, I run a 5.9 0-60 with the same mods. I have also seen about a 2mpg increase with HF. These were all with the 91 tune.
That I cant say. I haven't gotten to that point. Have you thought about reaching out to white lightning? I think I may give it a try to see if there is a difference and I will mention that I just switched back to my 89 tune and increased throttle by 10% and its a huge difference I think. Ill try a 0-60 hopefully in the next couple days for proof but this furthers my theory that something just isn't right with his 91 tune.
Well , the Hemifever tune is done . I run 93 , and decided to use the HF tune for 93 . WOW , My truck is SOOOO much more responsive and fun to drive ! Sean nailed it on the first shot . I believe this is that "dialed in" tune/mod my truck was looking for . Well worth $125.00 for sure . Thanks for everybody's input .
Im running a hemifever 89 tune and I love it. So much better than the garbage tunes ds sends you. I would rather be stock than run a canned ds tune. Hemifever was a night and day difference. I'm already averaging 17.5mpg and it keeps going up. Stock original paper filter and exhaust as well.
Hi Can someone PM me about how to contact Hemifever. I will be putting on a set of JBA Long tube headers without the cats. So I believe I will need a custom tune and I am hoping Hemifever can help.
A little late but ...hemifever@hemifevertuning.com . I had the custom tune include my 17/8 longtube arh's with no cats , even though I am running the high flow cats , just to cover myself because in NY because by law I have to have 'em .
Anyone have a tuner with a hemifever tune on a 2014 2500 5.7 thinking of getting a tuner with the hemifever tune want to hear from you guys and see is it will be worth it