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Discussion Starter #1
Hey guys, looking for a little help here.

I'm torn between the DiabloSport and the Hypertech Max Energy for my 2007 5.7 Overland with a CAI. I've read that with premium gas the DS gives upwards of 20+hp and the HT gives 16...both with a slight bump in mpg.
Also going to install the 180 degree Powerstat to hopefully prevent early detonation...though I've heard they're not worth it and can cause problems.
Any other suggestions? Links?
Thanks in advance.

JM
 

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I can only speak for the Predator. They were the first to properly tune the new Hemi engines and I have had 3 of them now. I am impressed by the performance and I even gained over 1mpg AFTER tires and lift. They can be had on the used market for $225 - $250. Make sure you get the serial cable kits for free updates.
 

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Discussion Starter #3
Thanks Bobula. How much of a gain did you see in hp, throttle response, shift firmness?
Did you replace your factory thermostat with a lower temp one?
Again, I appreciate the info.
JM
 

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Hey guys, looking for a little help here.

I'm torn between the DiabloSport and the Hypertech Max Energy for my 2007 5.7 Overland with a CAI. I've read that with premium gas the DS gives upwards of 20+hp and the HT gives 16...both with a slight bump in mpg.
Also going to install the 180 degree Powerstat to hopefully prevent early detonation...though I've heard they're not worth it and can cause problems.
Any other suggestions? Links?
Thanks in advance.

JM
What are these things and will they hurt your engine or reduce life span of the Jeep?
 

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Thanks Bobula. How much of a gain did you see in hp, throttle response, shift firmness?
Did you replace your factory thermostat with a lower temp one?
Again, I appreciate the info.
JM
in my first 5.7, I had a 25hp increase on the dyno ( already had intake and exhaust on that one). On my 6.1, I really can't say except it was making about 520hp at the crank with heads, cam, intake and exhaust. Thie Jeep is a different animal since it's not a performance vehicle, but there is a noticeable increase in HP. Shifts (especially) and throttle are also
a big difference. I haven't done a thermostat yet. I really only changed the tires size and basic tune. That reminds me that I should order one though. You should see if there's anyone you know local that has one and try it out. You could simply "un-marry" the tuner from their truck and intall it in yours to see how it feels.

What are these things and will they hurt your engine or reduce life span of the Jeep?
These are performance tuners. They are a safe way to increase power, make adjustments like transmission and tire sizes and even save a little gas. Take a look. www.Diablosport.com
 

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P.S. I wouldn't run a premium tune with gas prices so high. I'll bet you'll be happy with the results from a good 89 tune.
 

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Discussion Starter #8
Thanks for all the info Bobula. 25 hp gain is pretty nice, plus it may save a buck or three on gas...if I can keep my foot of the pedal! LOL
What would your recommendation be for a thermostat? 180? I read somewhere on here that going below 195 isn't optimal and can actually cause problems. Never heard that before.
Again, thanks for the knowledge. I'll be looking into that ebay link.
Best regards,
JM
 

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The only reason the Hemis run so hot is for emissions. most people without extensive mods do a 180 thermo. This along with a fan setting on the Predator will keep the engine cooler.
 

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Discussion Starter #10
Thanks for the info Bobula. Is it easy to install once you have it updated from the site? I'm getting the runaround from some local Jeep custom guys and am tired of waiting for them.
I'll probably opt for the 180 thermo as well.
Oh, what's your altitude above sea level there in Phoenix? I'm at 5,340' here and am wondering if I'll still get a decent gain in hp/torque. Even if I only pulled 20hp vs 30hp I'd still be happy.
Take care,
JM
 

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I would go for the Diablo as well. I have it on both my cars and I'm very pleased.
 

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We're at about 1200 feet here. Being at a mile high, you have less horsepower than someone who lives at 1200. You can still expect a gain, but less than I would (and I would be sure it's less than 30. I may have gained 20). Basically the same % loss because of the altitude.

It's a super simple install
 
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