JB4 or Diablosport.. that is THE question

I sell both but so far I am JB4 all the way on my personal truck! Loving it.
Has anyone been able to beat the DS on Dragy with the JB4?

Chris
 
Has anyone been able to beat the DS on Dragy with the JB4?

Chris
I think most the “fast” trucks on that list are HO regular 1500s right? If so I’m sure if we put small wheels and tires on an RHO we can compete haha
 
I think most the “fast” trucks on that list are HO regular 1500s right? If so I’m sure if we put small wheels and tires on an RHO we can compete haha
I’m sorry if I’m coming across arrogant or otherwise. That’s not my intention. I’m just asking. I was sincere in my question as I haven’t seen any updates lately. :)

Chris
 
I’m sorry if I’m coming across arrogant or otherwise. That’s not my intention. I’m just asking. I was sincere in my question as I haven’t seen any updates lately. :)

Chris
Oh none at all taken! Haha I am just saying I am enjoying the JB4!
 
Oh none at all taken! Haha I am just saying I am enjoying the JB4!
Nick, what is it that you prefer with the JB4?

I’m intrigued by these… also honestly a bit apprehensive with a few of the reports of issues I’ve read. I’ve seen issues with both tuners, and I’m sure they’re uncommon, but still gives me the heebie jeebies when messing with powertrain.

For my uses, I’m far more interested in daily driving improvement. I could really care less about draggy times. How do the two compare rolling on the throttle, responsiveness in low RPMs, coming out of corners, etc.

With the JB4, is the additional BT module basically required to change programs?
 
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Well I really didn't care about tuning my truck, but just got beat by a new rousch f150, it was close enough that I think I would've got him with a tune. So here I am now interested!!!!
 
DiabloSport all the way!! I’m seeing a few trade their JB4 for them. I don’t recall seeing the opposite. I’m not biased or anything :)

Chris
 
Well I really didn't care about tuning my truck, but just got beat by a new rousch f150, it was close enough that I think I would've got him with a tune. So here I am now interested!!!!
I’ve said it a million times…make sure you want it..cause once it’s on…you won’t like your truck nearly as much if you go back to stock. :)

Chris
 
DiabloSport all the way!! I’m seeing a few trade their JB4 for them. I don’t recall seeing the opposite. I’m not biased or anything :)

Chris
In fairness, I’ve definitely seen a few of each for sale, and in relatively short time. I’m still not convinced one is better than the others. Seems pros and cons for each.
 
In fairness, I’ve definitely seen a few of each for sale, and in relatively short time. I’m still not convinced one is better than the others. Seems pros and cons for each.
Agreed, JB4 is more HP which helps on top end, Cat6 more torque for the line...this things feels torquey enough for me, I'd take the top end HP, that's where I feel it lacks. When I floor it on the freeway to pass, it's underwhelming. Also I only have 91 here, so that 70HP sounds nice for that.
 
I only have 91 available as well, but I'm at 5,500' elevation. I wonder if 93 would be required?
 
I only have 91 available as well, but I'm at 5,500' elevation. I wonder if 93 would be required?
No sir, the higher the elevation the lower octane rating is needed. That's why you see 85 in places like Utah and Colorado...however, for this engine always run 91 minimum! Also, map 1 on either device is for 91.
 
In fairness, I’ve definitely seen a few of each for sale, and in relatively short time. I’m still not convinced one is better than the others. Seems pros and cons for each.
Hence why I joked that I’m not biased lol.

@Mikey Swift , zero issues passing anyone with the DS, but I’m sure the JB4 is right there too.

The fastest times come from DS, but would LOVE to see an objective test, of 0-60, 1/8th mile, 1/4 mile and then 40-60 times and 50-70 times or something similiar to see apples to apples.

Someone should be able to do this right?? I’ll volunteer here in Texas. Find someone with a JB4 so we can do it at the exact same place, time , temp etc. :)

And I wouldn’t care if I lost, so we can see which is best all around.

Chris
 
Hence why I joked that I’m not biased lol.

@Mikey Swift , zero issues passing anyone with the DS, but I’m sure the JB4 is right there too.

The fastest times come from DS, but would LOVE to see an objective test, of 0-60, 1/8th mile, 1/4 mile and then 40-60 times and 50-70 times or something similiar to see apples to apples.

Someone should be able to do this right?? I’ll volunteer here in Texas. Find someone with a JB4 so we can do it at the exact same place, time , temp etc. :)

And I wouldn’t care if I lost, so we can see which is best all around.

Chris
To be fair, the fastest times do come from the Cat6...BUT, most of those times are on non RHOs with the HO engine. The weight diff, gives them the edge. If you filter out only RHOs the diff between these two platforms is negligible...JB4 giving better top end performance, and Cat6 better low end.
 
@Nick797 and others who have the JB4 installed, is it necessary to swap spark plugs at all?? Looking into putting the JB4 on my truck as well as the AFe intake. AWE exhaust has been ordered and I’m waiting on that with lots of excitement to finally get some sound out of the truck!
 
@Nick797 and others who have the JB4 installed, is it necessary to swap spark plugs at all?? Looking into putting the JB4 on my truck as well as the AFe intake. AWE exhaust has been ordered and I’m waiting on that with lots of excitement to finally get some sound out of the truck!
No one has touched plugs. I was actually going to pull one out and see what we could cross reference these to for the future.

I think you ordered the AWE with us earlier today (name looks familiar) haha.
 
No one has touched plugs. I was actually going to pull one out and see what we could cross reference these to for the future.

I think you ordered the AWE with us earlier today (name looks familiar) haha.
I may started a thread on this topic, im getting close to 20k, I want to do plugswithin the next 10k
 
No one has touched plugs. I was actually going to pull one out and see what we could cross reference these to for the future.

I think you ordered the AWE with us earlier today (name looks familiar) haha.
Sure did I’m stoked on it! Watched a video of the AFE intake and love the sound of the turbos spooling so might be ordering that along with the JB4 too! Might as well slap the JB4 on while I’m swapping the intakes was my thought lol
 
I'm sure you'll be happy with either tuner as they're both great. I didn't have success with the DS, as many others haven't either, but I know DS makes great tuners and are well known in the game. whichever you choose, just know that you won't want to go back to stock like Chris had mentioned above.... This truck definitely wakes up.
 
Light Mounts Exhaust Options Molten Red- not RHO Vossen Wheels for RHO Ceramic coated and tinted Just ordered - anyone have the 2026 Blue color with pics?
Light Mounts Exhaust Options Molten Red- not RHO Vossen Wheels for RHO

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