From what little I was able to find on the interwebs is that the 6.5L "detuned" was a direct replacement for the 6.2L. The power was supposedly turned down to avoid damaging drivetrain components like the 3 speed transmission. I believe the HMMWV's that officially came with the 6.5 and 4 speed were not detuned and have the slightly higher output. I have a 1990 m998 that got a 6.5 in 2005 at MMA. I plan to do this mod soon. Maybe turn it up just until I see black smoke :)
@KyleSVT
7 ай бұрын
Thanks for the video! It's interesting to hear the 2.5L jeep engine comparison
@Kevin24Seven
7 ай бұрын
That was the closest thing I could think of tbh. Stock for stock (plus the turned up pump) I would say the acceleration feels about the same. I wish I could say it felt as good as the 4.0 Wrangler but I own one and even though it has 35 inch tires it is way quicker than my Humvee lol.
@Oliver0200
7 ай бұрын
Dude no way you're here😂 I've been subbed for like 8 years. You thinking about getting a humvee?
@KyleSVT
7 ай бұрын
@Oliver0200 Wow thanks dude! haha yes I do want one pretty bad lol
@hummerguy
7 ай бұрын
@@Oliver0200 Fr
@nutter85
7 ай бұрын
I did not know this so I'm glad you made this video. I'm going to try this on mine.
@roncaptain9527
3 ай бұрын
Thanks for the truth about turning up the pump.. My pump has seen better days. So i will be having it rebuilt by Pensacola Diesel soon... I will be talking to them about turning it up slightly...As we here at FULLFORCE MARINE use our Humvee in our work.. Our Humvee is called into duty often...
@Oliver0200
7 ай бұрын
Placebo effect lol
@tduncan9938
7 ай бұрын
Hey I heard that you can do this but never seen anyone do it so thanks!!
@HotrodSerch
7 ай бұрын
Did the “tune” affect your top end at all?
@HotrodSerch
7 ай бұрын
Or is it effect 🤔
@Kevin24Seven
7 ай бұрын
@HotrodSerch it's affect haha but I would say top end is basically the same. I don't floor the thing often anyways but I think the biggest difference felt was the torque going up hills not having the transmission constantly downshift and pull high RPMs
@RAM_638.
4 ай бұрын
Did you need the hard top windshield or can a soft top windshield work for your hard top?
@garageobsession2421
3 ай бұрын
I did this mod just like you did with 1/8 turn and I’m getting a slight hint of black smoke when the pedal is down to the floor is yours doing this too?
@Kevin24Seven
3 ай бұрын
@garageobsession2421 I would call mine more than a slight hint lol. If I'm going up a big hill with the pedal down it will pour out a decent amount. Nothing like a 12 valve Cummins but enough for the cars behind me to notice it. If yours is just a slight hint I probably wouldn't worry about it but you could always put in an EGT guage just to be sure.
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