[BLACJAC]

i have a mustang modular racing cai that kept throwing off a cel,it has a 9"conical filter and an 89 mm maf housing ,no tune ,so i got a 80mm maf housing from a stock airbox and installed the filter to that and it ran for a while then set off cel,i have a 2006 gt any sugestions before i put back the stock box that i had ? i dont want a tune right now and this in theory should be working ,volume of air vs, velousity

[Norse1974]

If the inlet tube on your "home made" CAI is larger in diameter then the factory inlet tube you will throw codes.this is why all CAI require a tune after install except for K&N.They leave the inlet tube the same and push as much air by the MAF(with their great breathing filter) as what the computer will allow.

[BLACJAC]

IT IS THE FACTORY INLET HOSE,THIS IS WHY I CANT FIGURE OUT WHY ITS THROWING A CEL?

[Norse1974]

If you are using the factory inlet tube & its throwing codes then you should put it back to stock and save your dimes & nickels for a CAI.

[BLACJAC]

, I GOT IT TO WORK AND NO CEL,NOW IHAVE TO BUY A HEATSIELD FROM JLT IN VA. THERES FILL FIT PERFECT ,BECAUSE HE USES THE SAme exact filter i have 9" conical ,open end ,made by s&b, the problem was when i cut the housing from the top of the stock box i used a hacksaw which was stupid i should have found a friend with a table saw,but i didnt anyway i cut it on angle the bottom was slanted about 1/2 on inch in from the top ,so i put the filter on evenly WRONG!!! I needed to put the filter all the way in until it touched the where the actual sensor goes intp the housing and WHALLA!!!! worked great drove 5 miles turned the car off and stated back up no cel before this is where in went on the cel, so i drve 5 miles three more times and turned the car off an on three more times and NO CEL!!!! IM A SMALL GENUIS LOLOLOLLOLOLO