A sick JK on Hypertech's dyno
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JK Super Freak
Joined: May 2007
Posts: 1,766
Likes: 2
From: Martinsburg, WV
sick as in *cough* *cough* its running poorly? or sick as in "damn, thats bad ass!"? i'm thinking sick as in running poorly since Jeep says these things put out 205hp...
and there was another thread on here months ago where someone added a CAI, and exuast system and got his up to 220-240hp on a dyno
and there was another thread on here months ago where someone added a CAI, and exuast system and got his up to 220-240hp on a dyno
JK Super Freak
Joined: Dec 2007
Posts: 1,235
Likes: 0
179hp is pretty decent. Looks as if that intake is stock so perhaps that was fairly aggressive tuning...
Curious though, it appears that it's running in 4wd (hence the 4wd rollers) so are those numbers in 4wd? I would assume there would be even lower numbers in 4wd as opposed to 2wd due to more moving parts and power transfer.
The 220hp-240hp isn't happening. Perhaps that's what the butt dyno suggests but no way that's going on at the wheels.
That is a great picture though!
Curious though, it appears that it's running in 4wd (hence the 4wd rollers) so are those numbers in 4wd? I would assume there would be even lower numbers in 4wd as opposed to 2wd due to more moving parts and power transfer.
The 220hp-240hp isn't happening. Perhaps that's what the butt dyno suggests but no way that's going on at the wheels.
That is a great picture though!
Last edited by riverzendz; Feb 4, 2008 at 12:25 PM.
JK Junkie
Joined: Jul 2007
Posts: 3,193
Likes: 2
From: Boston, MA
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JK Super Freak
Joined: May 2007
Posts: 1,766
Likes: 2
From: Martinsburg, WV
179hp is pretty decent. Looks as if that intake is stock so perhaps that was fairly aggressive tuning...
Curious though, it appears that it's running in 4wd (hence the 4wd rollers) so are those numbers in 4wd? I would assume there would be even lower numbers in 4wd as opposed to 2wd due to more moving parts and power transfer.
The 220hp-240hp isn't happening. Perhaps that's what the butt dyno suggests but no way that's going on at the wheels.
That is a great picture though!
Curious though, it appears that it's running in 4wd (hence the 4wd rollers) so are those numbers in 4wd? I would assume there would be even lower numbers in 4wd as opposed to 2wd due to more moving parts and power transfer.
The 220hp-240hp isn't happening. Perhaps that's what the butt dyno suggests but no way that's going on at the wheels.
That is a great picture though!
after some digging, i found the thread i was thinking of... https://www.jk-forum.com/forums/jk-write-ups-39/results-848/. i quote from that thread:
The results are in.. I’ll keep this as short and sweet as I can..
Test and configurations were made to my 2007 Jeep Wrangler 4D Rubicon..
1st. Dyno run
Bone Stock = 180.7hp / 215.8tq
First we installed a Magna Flow True Dual Exhaust system keeping the stock catalytic converts in place..
2nd. Dyno run
Dual Exhaust System = 189.6hp / 222.5tq
Then we removed the dual system and re-installed the 2 into 1 collector and just ran a single back to a Magna Flow 6” x 18” muffler and then straight back..
3rd. Dyno run
Single Exhaust System = 194.3hp / 231.3tq
Obviously the Single System yielded much better results.. That is what stayed on.. And let me tell you the Sound is awesome..
Now the easy stuff AEM Brute Force Intake System.. Very Clean install..
4th. Dyno run
Single Exhaust System with AEM intake = 202.1hp / 234.6tq
Last but not least.. We installed the Jet Performance Stage II chip.. My initial thought process on this one was I wasted my money.. But the Dyno tell the truth..
5th Dyno run
Single Exhaust with AEM intake and Jet Performance Stage II chip
Final Results = 213.9hp / 243.3tq
Overall Gains = 33.2 HP / 27.5 TQ
Test and configurations were made to my 2007 Jeep Wrangler 4D Rubicon..
1st. Dyno run
Bone Stock = 180.7hp / 215.8tq
First we installed a Magna Flow True Dual Exhaust system keeping the stock catalytic converts in place..
2nd. Dyno run
Dual Exhaust System = 189.6hp / 222.5tq
Then we removed the dual system and re-installed the 2 into 1 collector and just ran a single back to a Magna Flow 6” x 18” muffler and then straight back..
3rd. Dyno run
Single Exhaust System = 194.3hp / 231.3tq
Obviously the Single System yielded much better results.. That is what stayed on.. And let me tell you the Sound is awesome..
Now the easy stuff AEM Brute Force Intake System.. Very Clean install..
4th. Dyno run
Single Exhaust System with AEM intake = 202.1hp / 234.6tq
Last but not least.. We installed the Jet Performance Stage II chip.. My initial thought process on this one was I wasted my money.. But the Dyno tell the truth..
5th Dyno run
Single Exhaust with AEM intake and Jet Performance Stage II chip
Final Results = 213.9hp / 243.3tq
Overall Gains = 33.2 HP / 27.5 TQ
Now... was that at the flywheel testing... doubtful, but you never know. Also, to be technical, there is no concrete definition for "HP" so maybe he used a different measurement. But this is where I got my 220hp number from.
JK Enthusiast
Joined: Sep 2007
Posts: 105
Likes: 0
From: Texas
179 is very nice if it is just due to tune, intake and exhaust. 
JK Junkie
Joined: Jul 2007
Posts: 3,193
Likes: 2
From: Boston, MA
sick as in *cough* *cough* its running poorly? or sick as in "damn, thats bad ass!"? i'm thinking sick as in running poorly since Jeep says these things put out 205hp... and there was another thread on here months ago where someone added a CAI, and exuast system and got his up to 220-240hp on a dyno
and there was another thread on here months ago where someone added a CAI, and exuast system and got his up to 220-240hp on a dynoafter some digging, i found the thread i was thinking of... https://www.jk-forum.com/forums/showthread.php?t=848. i quote from that thread:
Now... was that at the flywheel testing... doubtful, but you never know. Also, to be technical, there is no concrete definition for "HP" so maybe he used a different measurement. But this is where I got my 220hp number from.
Now... was that at the flywheel testing... doubtful, but you never know. Also, to be technical, there is no concrete definition for "HP" so maybe he used a different measurement. But this is where I got my 220hp number from.
You said he was up to 220-240HP with an exaust and CAI. You forgot to mention that it was only up to 213HP, and that there was EXTENSIVE exhaust work done along with a Jet Chip. While I realize this is probably just you forgetting that part from the older post, you still made an assumption that was kind of bogus (Which is why I agreed with sonic).
And yes, while there are several kinds of "Horsepower" measurements, Mechanical horsepower is the only one really used to measure vehicles. It has a standard associated with it, so I'm sure all dynos out there (assuming properly calibrated) would yield the same results. We do have to factor in environment conditions though.