Sean Powell (HemiFever) VS Jay Greene (Greene Racing) - Dodge Challenger Forum: Challenger & SRT8 Forums
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post #1 of 17 (permalink) Old 02-22-2018, 01:59 PM Thread Starter
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Sean Powell (HemiFever) VS Jay Greene (Greene Racing)

Hey guys I have a few questions about these guys and would like your opinions. I have seen a lot of people basically of all Chrysler, Jeep, And Dodge people go to Sean From HemiFever for there tuning. I have seen LOTS of great reviews from people but at the same time I see a lot of bad reviews about him as well. Now I have talked to Sean on the phone about my challenger and he seem pretty nice and understanding and straight forward but I have heard he has some problems getting some tunes right from certain people. Also heard that he is very blunt and rushes people and tunes. But, We all know that a dyno is gonna be the best way to figure out how to squeeze out as much horsepower from the ecm as possible and it seems Sean uses data logging with you driving and your mods to figure the best tune for you. Makes sense right? So then we have Jay Greene. I have heard great reviews about him but they are few and far in between. The only negative I have kinda found is that people don't really 'feel' a power increase with his tuning. I haven't talked to Jay cause I don't have his phone number and I can't find it and can't view his facebook because I don't have facebook. Does anyone have his phone number so I can talk to him? So in the end which would you guys select? If you have had tuning from both guys please tell me your experience. I want to hear if you have had a good or bad experience with either one of them.


Thanks guys.


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2013 Dodge Challenger R/T 6sp. PCP

Mods: CDV Delete, Muffler Delete, Resonator Delete, Tuned By Jay Greene.
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post #2 of 17 (permalink) Old 02-26-2018, 12:21 PM
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I have had good experience with Sean, and having come from the performance parts industry myself (just not mopar) usually dyno tuning is more for peak power number as most dyno runs are just WOT pulls, vs road tuning and data logging that tend to get lots of driving styles/ranges. I know when I datalog for tunes I do a combo of situations including WOT, both high and low speed and a bunch in between. Even when I have done dyno tuning, most dyno and dyno shops are not setup for part throttle, or non WOT high load conditions.

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post #3 of 17 (permalink) Old 02-26-2018, 01:02 PM Thread Starter
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Very true. But when I do need the power you know, when either I just want to go nuts on a back road or if some a-hole a stop light needs to be put in his place I want to know that every ounce of power is being pushed out of that ecm with 93 octane. With the nice add-on (and I did not know this) the complete removal or torque management on my 6 speed. I thought only automatics had that. But after further research I found out they have some.
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post #4 of 17 (permalink) Old 02-26-2018, 07:11 PM
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I'd like to throw my .02 in for Jay Greene..... I can honestly say he is great to work with. Before we begin, my only complaint is, the only way I could contact him was via facebook..... To me this was a PITA. Other than that, everything went very smoothly. I established contact with Jay about a month prior to me actually needing his services..... I did a Comp 270 cam install in my VVT 5.7, and thought I would be able to tune it using my Diablo Intune 1K. Well as most of you know this was incorrect..... So last minute on a Friday morning, I Facebook messaged Jay (from wifes account), and he called me within an hr..... He got all of my mod information, and wrote me a tune while we bs'd about the modern hemi..... I can't speak for Hemi Tuner, but what I can say about Jay is this, he wrote me 3 tunes for a very fair price. His price was so fair, that I gave him extra for the inconvenience and short time I gave him to get my car running. With Jay, I got a NA tune for street driving, a NA tune for track use, and a 100 shot tune as well. He only needed to do one revision and didn't charge me for that. I'm very satisfied with Jay's customer service and expediency. He is a hell of a guy to work with...... I have HPT now, which I was able to load his custom tunes into the software as a baseline, and work from them. If I ever end up needing another tune, I'll use Jay Green every time...... Again I can only speak for my experience. Just as a matter of reference I choose Jay over the others because he got back to me quickly and worked with me under a stressful time, and other members who have gone fast with 5.7's recommended him. On motor my car went from doing 104 in the 1/4 to 110 easily.

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post #5 of 17 (permalink) Old 02-26-2018, 07:42 PM Thread Starter
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Thanks for the feedback! That was awesome to hear! I have made my decision.

Last edited by Nuclear Stride; 02-27-2018 at 03:39 PM.
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post #6 of 17 (permalink) Old 05-22-2019, 08:51 PM
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Thanks for the feedback! That was awesome to hear! I have made my decision.
So did you due the tune yet? Results?
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post #7 of 17 (permalink) Old 05-22-2019, 09:20 PM
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I'll also recommend Jay Greene, I have one of his cams and tune. The car runs great and makes good power for a 5.7. He's also very easy to work with. What impressed me the most is all the tune revisions he made to dial it in just right. He said he's a perfectionist and works hard to make his customer happy.

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post #8 of 17 (permalink) Old 05-22-2019, 09:37 PM
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I have to put a good word in for Sean @hemifever . He was also easy to work with and my car runs very well as far as I can tell. It's the only one I have. I know it drives me crazy to have to run the stock tune when taking it to the dealer. Sean was very responsive. He seems to be a guy of few words which could come across as blunt, but I would recommend him any time. I'm very happy with his work.


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2012 R/T Classic 6M; STP; Barton Shifter; CDV delete; Skip Shift Eliminator; Blastin' Bobs' axle back Magnaflow resonators; DiabloSport i2 tuner w/Hemifever custom tune; Mopar hood pins; Petty's Garage front strut brace; Tungsten Metallic Clear Coat.
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post #9 of 17 (permalink) Old 05-22-2019, 09:51 PM
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I have nothing but good to say about Sean. Great to work with, and a very satisfying end result with his tune.

I have no problem with blunt, as I'm blunt myself in many ways. That said, he didn't come across as blunt to me, just factual.

As far as Jay is concerned, I've never dealt with him, and probably won't in the future, if he's only on facebook.

I've had family members that I love beg me to join facebook. Not a facebook fan for numerous reasons, and certainly won't join just for a business transaction.

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post #10 of 17 (permalink) Old 05-22-2019, 10:47 PM
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Anyone ever have decent results on a 6 speed?
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