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 Post subject: Re: Increase in mpg w/ 4.7L TB
PostPosted: Fri Aug 18, 2017 5:17 pm 
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Posts: 165
hopwrecked wrote:
Just ordered a WK TB off ebay to install on my 2011. This week I had a 4" SS snorkel fitted for dust and water crossings. It got me thinking about your TB mod again because of the difference the snorkel seems to have made to throttle responce.

Anyway this has me thinking tunning again as well. ECU. If after market tuners are able to tune the 3.7 V6 in other makes why not then the KK http://www.bgperformance.com/vehicles-b ... -can-tune/ .

Anyway sorry to dig up an old thread. I will let you know how the 4.7 TB goes with a 4" snorkel feeding it. I'm planning on a new custom air intake pipe too. Infact advice on optimal I.D would be appreciated. Whether to match it to the TB ID or have it tapper down to it for increased speed etc.

Cheers

Dude where can I see pictures of your snorkel?


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 Post subject: Re: Increase in mpg w/ 4.7L TB
PostPosted: Wed Sep 13, 2017 12:43 pm 
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Not sure if this is still active , but is this worth the install when the Computer on the KK's tend to negate any type of mod that we install. I have a modded Edelbrock RPM exhaust on my KK , 3" to a crossflow , and it worked great for about 6 weeks and then some of the returns have diminished..... has anybody rasn this mod for a significant amount of time for verification?


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 Post subject: Re: Increase in mpg w/ 4.7L TB
PostPosted: Thu Sep 14, 2017 1:13 am 
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Location: Pennsylvania
smorton84c wrote:
Not sure if this is still active , but is this worth the install when the Computer on the KK's tend to negate any type of mod that we install. I have a modded Edelbrock RPM exhaust on my KK , 3" to a crossflow , and it worked great for about 6 weeks and then some of the returns have diminished..... has anybody rasn this mod for a significant amount of time for verification?



Since you already went with larger exhaust, the 4.7 TB would work fine either way.

Im on the factory exhaust with the 4.7 TB, the only improvements I saw was from towing. The improvement was based off of highway crusing speed and the engine regularly maintained rpms verses the oem TB having variable rpm and constant shifting.

The 4.7 TB is not the end all be all to our engine. Dont expect to burn rubber.

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 Post subject: Re: Increase in mpg w/ 4.7L TB
PostPosted: Tue Oct 31, 2017 10:04 am 
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Joined: Sun May 19, 2013 8:38 pm
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Location: Blue Mountains NSW Australia
brianb1998 wrote:
hopwrecked wrote:
Just ordered a WK TB off ebay to install on my 2011. This week I had a 4" SS snorkel fitted for dust and water crossings. It got me thinking about your TB mod again because of the difference the snorkel seems to have made to throttle responce.

Anyway this has me thinking tunning again as well. ECU. If after market tuners are able to tune the 3.7 V6 in other makes why not then the KK http://www.bgperformance.com/vehicles-b ... -can-tune/ .

Anyway sorry to dig up an old thread. I will let you know how the 4.7 TB goes with a 4" snorkel feeding it. I'm planning on a new custom air intake pipe too. Infact advice on optimal I.D would be appreciated. Whether to match it to the TB ID or have it tapper down to it for increased speed etc.

Cheers

Dude where can I see pictures of your snorkel?
ImageImage



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 Post subject: Re: Increase in mpg w/ 4.7L TB
PostPosted: Thu Jul 11, 2019 4:04 pm 
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Joined: Mon Jul 01, 2019 6:35 pm
Posts: 3
I know this is an old thread. I have an '08 Liberty with a K&N CAI and Gibson cat back exhaust. Ordered a used TB from an '09 4.7L Grand /Cherokee. Got the TB and found the issue to getting my CAI boot to fit. It won't. Called K&N and ordered the boot and one clamp from the 4.7L Grand Cherokee kit. My boot with my Liberty's CAI is a 3.25" to 2.75" coupler. The 4.7L TB requires a 3.25" coupler. Will post pics when I get boot/coupler and get it on. Looking forward to seeing improvements. By eliminating that reduction you are gaining approx. 20% better flow volume through the TB.

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2008 Liberty KK, OME lift with 27/31 springs and JBA UCAs, 245/75/16 Falken Wildpeak AT3 on 16x8 Level 8 Strike wheels, K&N CAI, Gibson cat back exhaust.


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