Ok i have 2 codes that were thrown at me and they where p0301 and p0401.

ok the p0301 is Cylinder 1 One Misfire Detected.

then the p0401 is Insufficient EGR Flow.

What can i do to fix these things?

 

ok for the misfire i would check the plug and wire to the cylinder as well as the coil to ensure proper spark.
for the EGR flow it's most likely the DPFE sensor which is know to throw codes.
you can get a new sensor or if you want get a tuner and remove the EGR function and then remove the egr system.

 

do you have emissions testing where you live?

 

yea i just did it the test today to get new tags and i passed.

 

but i don't think we have emissions test here.

Can it effect my gas mpg?

 

I have notice that my oil pressure has gone up a little and my voltage did to just seeing if this has anything to do with it. They did go that much but a little passed the middle.

 

Yes your EGR does effect gas mileage. It re-circulates unburned exhaust gases back into your intake, thus equaling free fuel that would juust be going out your tailpipes. I had mine taked out for a while and i was getting like 230 miles to the tank! The EGR is disabled a WOT anyways so i would keep it in.

 

Well i get like about 160 miles a tank.

 

Lol that sounds like my stang it only get about 230 to a tank with egr so....who cares get rid of motor bay trash! get a 5/8 female cap and cap off header and take out the egr system

 

dude check your o2s....thats about like my mileage and i have 2 bad o2s and a butt load of mods