Hey everyone I'm new here this is my first evo. 03 evo 8 I love it it has a few nice mods I bought her about a month ago from a guy and it was all good he told me it would need a tune and so I got on here did research and I checked the car everything healthy but after a while of highway driving at about 65 mph it would stutter like a fuel cut type of thing. I checked around here and most posts said a tune would help. I'm just wondering if that's the case or if my problems really worse. I have a appointment with English to tune on Monday. Thanks for taking your time to help

 

What mods have been done to the car? Did the previous owner say it needs a "tune" or a "tune up"? Might just need a fresh set of plugs.

 

^^^ If your doing a tune which i recommended cause you dont know who did if before but they recommend new plugs so might as well change them

 

Constantly baffles me, the owner told you it needed a tune a month ago but you wait until the night before bringing it to a great tuner to check into the issue now that you have problems. If a set of plugs is the only expense you encounter count yourself lucky. This aint your moms kia.. small mistakes have big prices.

 

Yea I know pretty dumb I just never posted about my issue I read others with similar issues. But yea I'll change the plugs for sure

 

What should I use ngk iridium? I heard not to spend the money for those what's best? Thanks for the feedback guys I'm learning

 

Most likely needs a tune. Def new plugs, run ngk bpr7es

 

^ I didn't have any luck with the BPRxES. My car broke up at higher RPM's. I run the BR8ES...

 

op, I had similar issue not long ago, every time I hit boost at around 4K in any gear the car would stutter and had problems getting boost, I put some fresh fuel in it, 93oct, fuel injector cleaner, ran half a tank and then added another one, problem got a lot better and wasn't doing it as much or as bad, changed my spark plugs, problem got even more better, did a compression test, showed good result, then changed plugs for cylinder 1 and 3 and now the problem went away. I only changed plugs for 1 and 3 is because when the check engine light came on it showed those cylinders misfiring.

 

I would recommend the br7es or the br8es if you want a plug 1 step colder. My advise would be to ask English what they recommend you run.

 

Bpr7es for a few bolt ons, bpr8es if you are running a ton of boost

 

Thank you everyone I have a few bolt ons not much but I got it tuned and the new plugs helped a ton it doesnt shutter anymore it does misfire every few seconds so im going to gap them again and see if it changes. Definitely getting bpr7es