Okay, so I'm on the fence about getting a tuner. Sean (from HemiFever) has been very nice answering all of my questions. The last question that I asked was, would a tuner void my warranty. His reply was, "nothing you do will void your warranty".
So what do you guys think? Any experience on this one you'd like to share?
Of course running a tune will void your warranty... The question is???? Did the tune F- up your motor and can the dealer find out. Unless you write the tune and know the in and outs... My guess is as good as yours. I've ran a custom tune in my 2010 Srt and had no issues with the dealer. YMMV
We have been through this over and over. Only if your tune was a direct cause of engine malfunction would it be denied. As a precaution for denial of any warranty work return your vehicle to stock before bringing it to the dealer.
I know this was probably one of those redundant questions but after hours of searching the forum I still had some hesitation. I appreciate everyone's feedback. I'm going to go for it
I received my tuner today. Some quick thoughts on the tuner and service:
- tuner is a little smaller than an iPhone but it feels sorta cheap in comparison. Not sure how sturdy it will be long term
- it came with extra long cables...thank you! Diablo didn't go cheap on this part.
- touchscreen feels kind of cheap as well but it gets the job done
- out of the box the tuner took awhile to update but diablo did a good job making it an easy process
- I called diablo tech and was on hold for 1 hour 20 minutes...I finally hung up and found the answer on the diablo forum
- I purchased the tuner from hemifevertuning.com and all I can say so far about Sean's service is....wow!
His response time is amazing and he has clear communication. I can't recommend him enough for this reason. I emailed him my last tune and had two new tunes in my email within the hour.
- performance...well I started with the 87 diablo tune....I haven't had a chance to take it past 60mph but acceleration is a lot better and it "pulls" a lot after shifting ....definitely a lot more fun to drive
Just wait until you install Seans tune. The diablo tune will feel like nothing compared to his. Especially the transmission reprogram that is part of the Hemifevertuning tune.
X2....the Intune canned tunes felt just a little better than stock, while the canned trans tuning makes the most difference. Seans 93 CMR tune is so much better than the canned Diablo 93 tune. I also switch over to his 87 tune for road trips, much better than the Diablo canned 87.
I'm going with Sean tunes tomorrow after I get hom and look up my PCM # and diablo Serial number. I wonder if anyone has had Johan Tunes? I wonder if they are comparable, Cuz i heard great things with Johan tunes as well. Both sounds to have super tunes but how to do compare with each other??? I'll probably buy from both of them just so I can be assured I got what feels right for me.
I drove my GC about 30 miles today (highway) and picked up 2-3 mpg (according to the heads up display) since I loaded the 87 octane tune from Diablo. I track my fuel very closely both city and highway so I'd say a 1-2 mpgs is right on the money. Just an interesting observation I thought I'd share. I plan to load Sean's 89 tune this evening.
Just drove 210 miles on my Hemifever 93 tune using mpg on the dash it showed a hi of 24.6 and 22.9 to my destination. Did not use the cruise control and drove like I had an egg under my foot. kept speed around 65 mph. Lets see what normal driving gets on the return trip. Used a quarter of a tank.
I'm not ever focused on MPG with this rig, nor am I able to drive 65 MPH on an open highway, nor am I wanting Sean's tune for economy, but the above post is a bit shocking.
you know I wouldn't doubt that mpg when using the hemifever 93 tune. I loaded it earlier today and I'm averaging 18-20 city!!! Before I was averaging 12-14 city.
I have to say that hemi fever custom tune really made a good difference in the way my jeep drives! Transmission especially. Ive sent my first log from hemi fever 93 and when I'm all done I will post a good review on CAI intake Gibson exhaust. Trinity and then the hemi fever tunings which I'm really impressed
Wow. Read every comment in this thread and now I feel like I have to give this tuner with Sean's custom tune a shot. I've been pleased with my Hyptertech harness, but if I can get the performance gains described here AND pick up even a couple MPG's with the tuner it sounds like money well spent. I can't get 93 octane anywhere in Socal, so hoping the 89 and 91 tunes are close to as good. Thanks for the updates- please keep them coming.
I've read some issues with people changing their tire size in the Diablo Trinity and setting off the ABS light. Are any of you guys finding that changes to the tire size affects the ABS light or has that seemed to have been worked out?
Thanks for the replies
2 better MGGs than the Diablo canned tune. I actually got worse mileage with the canned tune and am back to what is normal.....13.9 mostly city and about 21 on highway.
Just received my INTUNE this morning.. I am really hoping diablo can figure out the issue with 2011 not accepting custom tunes. So far I am not impressed with the diablo canned tunes.
^^ X2. I've run both of the hemifever tunes I have- 89 and 91, and love, love, love the way the jeep drives now. Night and day difference from stock and also the diablo canned tunes. Not seeing the dramatic increase in MPG some others have shared, but may be because I can't stop getting after it from time to time. When I have tried to drive it normally like I did before the tunes, I'm definitely not seeing worse MPG, and it actually looks to be a little better. As others have said, this is MUST have for the WK2.
I don't see a mpg difference in street driving but a noticeable increase on hwy. I took a 200 mile trip and got 24+ going at 65-70 coming home 70-85 got 21.9. The other day I returned my Jeep to stock programming to see the difference "wow" what a slug. Going back to 93.