06’ 9900i with a CM870 ISX tune options
04-16-2021, (Subject: 06’ 9900i with a CM870 ISX tune options ) 
Post: #1
06’ 9900i with a CM870 ISX tune options
I’m trying to find who would be able to provide the best tune for better fuel efficiency on my 06’ 9900I. It has a 565hp cm870 isx with 3.55 rears and a 13 speed manual. I’m averaging 5.4-5.5. I usually am 78k-80k at all times. I know it’s not the most aerodynamic truck but would love to have a proper tune put to and hopefully get closer to 6mpg. I’m located by Birmingham, al.
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04-16-2021, (Subject: 06’ 9900i with a CM870 ISX tune options ) 
Post: #2
RE: 06’ 9900i with a CM870 ISX tune options
maybe try forum member running rough.


User's Signature: ->: What I post is just my own thoughts and Opinions! --- I AM Full Of S__T!.
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04-16-2021, (Subject: 06’ 9900i with a CM870 ISX tune options ) 
Post: #3
RE: 06’ 9900i with a CM870 ISX tune options
Will do. Thanks
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04-16-2021, (Subject: 06’ 9900i with a CM870 ISX tune options ) 
Post: #4
RE: 06’ 9900i with a CM870 ISX tune options
(04-16-2021 )Rawze Wrote:  maybe try forum member running rough.


How do I contact him? Trying to figure the site out
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04-16-2021, (Subject: 06’ 9900i with a CM870 ISX tune options ) 
Post: #5
RE: 06’ 9900i with a CM870 ISX tune options
(04-16-2021 )Luckyjayb Wrote:  
(04-16-2021 )Rawze Wrote:  maybe try forum member running rough.


How do I contact him? Trying to figure the site out

I sent you a pm
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