question.......

[billr814]

i have a 06 mustang gt,,,5spd..w optional fac 18" rims..should i do the wheel size adj on my tuner??i use the 93 tune...i also i bought this as a pack from rpm outlet^&$^#..anyway i got rid of the c&l cai and use a afe,,,is there any new program i should download..? i was getting ck engine light w the c&l...no problem now w the AFE cai..

[only1d1]

the 18 rims shouldn't cause any problems because you only going +1 from stock, not to mention they were purchased from Ford so any cal needing done would have already been fixed.

[christina]

You shouldn't have to adjust for tire size. I doubt Ford would sell you a car with the speedometer not reading correctly.