i had a 4 1/2" prefomace exhaustinstalled and i was getting about 32 miles but now im getting about 25to the gallon with an air intake system is there any thing i can add on exhaust to get my milage back

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4.5 " exhaust is too big on ur car. ur definetly loosing bottom end and dat might b hurting u.

 

not shure if its a 4.5 or not but is a preformane exhaust

 

That more like the pipe on a semi. Who the hell told you to do that?! You need nothing ore than a 2.5, and that is not needed depending on what mods you have.

 

is it a 4.5 inch exhaust piped system or do you have a fart can muffler with a 4.5 inch outlet tip on it??

 

well the outside diameter of the muffler is 4.5 but not know the acutal size but guess its a normal exhaust that every one has

 

i'm hoping your inlet is <2.5 in. and your outlet is 4.5in. cause otherwise you've got too big

 

do believe its 2.5 in and 4.5 out and for the fuse its a numbered code p1648 wich means the oil sending unit is fried

 

the stock 02 es neon exhaust on mine was 2.25 in and out so i upped it to 2.5.everyone is right man with a 2.0 4 banger you dont need that.thats probably killing your gas.also try a restoration kit for your intake, they work great and make the filter look andperform like new...

 

its a brand new air intake kit only a couple days old,what about a heat shield for the intake?also what would u put on a 2.0