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1999 Suburban 4X4 mods  
rlfolk rlfolk
New User | Posts: 1 | Joined: 04/08
Posted: 04/24/08
06:52 AM

I have a cold air intake, throtle body spacer and programmer. I would like to achieve the best gas mileage possible. What type of exhaust and headers would be the best combination with the least sound.  Also I would like to tune it up, what spark plugs and wires for best gas mileage? THX any other thoughts would be appreciated.  


 
STMIKE
Moderator | Posts: 256 | Joined: 11/06
Posted: 04/24/08
10:12 AM

which motor do you have?  


 
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