The Results are In....
04-05-2008, 06:29 AM
#121
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Impressive results. Thanks for posting. Not everyone has access to a dyno, and it's nice that you shared the results. My only question is this: Why did you opt for the type of air intake that you used? I can promise you that you would have made more power with some sort of cold air package. If someone sold you that as a cold air package, they saw you comin. It may dyno more than stock, but it will never out perform an intake that gets air from completely out of the engine bay. I have wondered why people buy these types of intake packages for some time. Cool air is always best.
is there a true "cold air intake" you would recommend? i was wondering about this type of system. Thanks
04-14-2008, 06:11 AM
#122
04-18-2008, 11:50 AM
#124
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I'm a little confused on the graph. How is the torque increasing but the Hp is dropping. This is most evident on the modified curves.
04-21-2008, 09:33 AM
#126
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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
Maybe to some this was a big waste of time but what the heck free use of a dyno and some spare time and some great Manufacture support.. Take these results as you may..
I will work on getting some pictures up on the exhaust relocation and intake install…I will also work on getting the dyno slips posted up.. Thanks Jay
Edited --- All number were off an estimated 18hp and 15.5tq... After we calibrated the dyno, this is what we discovered.. I have correct my numbers to show the correct gains..
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
Maybe to some this was a big waste of time but what the heck free use of a dyno and some spare time and some great Manufacture support.. Take these results as you may..
I will work on getting some pictures up on the exhaust relocation and intake install…I will also work on getting the dyno slips posted up.. Thanks Jay
Edited --- All number were off an estimated 18hp and 15.5tq... After we calibrated the dyno, this is what we discovered.. I have correct my numbers to show the correct gains..
I installed the same setup this weekend. My initial gut feel is lower low end power but higher WOT power. Also, when comparing to stock it seems to RPM lower when moving at highway speed. I guess this will help MPG in the long run.
A few other items to note.
With the muffler under the driver seat the drone noise is very noticeable. Has anyone wrapped their muffler in exhaust wrap to muffle the sound?
Using the stock pipe and hangers, the 6" muffler sometimes hits (and vibrates) against the cross bar supports. Very annoying. I am looking to buy some aftermarket hangers to see if I can drop the pipe and muffler a little more to give it some extra space..
04-22-2008, 05:47 AM
#127
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Muffler
I have the same muffler in about the same place. Yes, the drone is noticable and annoying when trying to carry on a conversation around town. My muffler however does not hit the crossmember at all. The mechanic that installed mine did a good job of tucking it between the two body braces, close but not close enough to hit. As a matter of fact the gas tank hangs alot lower than my muffler.
I might try the sound barrier stuff under the carpet and see if that muffles the sound a bit. About six months later I installed a 1" MORE body lift, afterwards it did developed a slight vibration at low RPMs. I found that the e-brake cable (I think) was riding against the exhaust pipe. I just bent the small wire bracket that holds the cable in place enough so that it does not hit anymore. Now it's vibration free. The body lift could be a cheap option you might want to try, afterwards the exhaust my sag enough so that it does'nt hit the body anymore.
Hope this helps
I might try the sound barrier stuff under the carpet and see if that muffles the sound a bit. About six months later I installed a 1" MORE body lift, afterwards it did developed a slight vibration at low RPMs. I found that the e-brake cable (I think) was riding against the exhaust pipe. I just bent the small wire bracket that holds the cable in place enough so that it does not hit anymore. Now it's vibration free. The body lift could be a cheap option you might want to try, afterwards the exhaust my sag enough so that it does'nt hit the body anymore.
Hope this helps
04-22-2008, 06:07 AM
#128
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That's awesome, finally someone did an actual benchmark with various mods, this should be a sticky for the curious posters about hp gains. And for those like myself who think the various "chips" out there are a waste of 10 hp for $200-300 well I might have been right but someone out there may want that extra 10 hp 
.
Great Post
.Great Post
04-22-2008, 06:51 PM
#129
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I installed the same setup this weekend. My initial gut feel is lower low end power but higher WOT power. Also, when comparing to stock it seems to RPM lower when moving at highway speed. I guess this will help MPG in the long run.
A few other items to note.
With the muffler under the driver seat the drone noise is very noticeable. Has anyone wrapped their muffler in exhaust wrap to muffle the sound?
Using the stock pipe and hangers, the 6" muffler sometimes hits (and vibrates) against the cross bar supports. Very annoying. I am looking to buy some aftermarket hangers to see if I can drop the pipe and muffler a little more to give it some extra space..
A few other items to note.
With the muffler under the driver seat the drone noise is very noticeable. Has anyone wrapped their muffler in exhaust wrap to muffle the sound?
Using the stock pipe and hangers, the 6" muffler sometimes hits (and vibrates) against the cross bar supports. Very annoying. I am looking to buy some aftermarket hangers to see if I can drop the pipe and muffler a little more to give it some extra space..
04-28-2008, 10:57 AM
#130
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Torque/HP curve