hesitation under boost

[AudiMV]

so on the freeway today I was in 5th gear going up a slight incline, my car hits about 15psi and then starts shuddering...then drops off....my cel flashes a few times then goes away. I took my car to autozone to scan it for codes and it passed....this shuddering only appears to only happen inn 4th or 5th gear under load....any ideas on what this could be??? thanks

[Neo1130]

MAF or plugs... How old are your plugs?

[AudiMV]

I'm pretty sure it isn't the maf because I changed it about 10,000 miles ago. My spark plugs were changed in my 40,000 service....I'm at about 60,000 now, is it time to change my spark plugs?

[Neo1130]

Hahahha, just a little secret... 10k miles is a lot for a MAF to go bad... I have seen them go bad in 500 miles... Not saying that is the problem... And I would DEFINATLY change those plugs... Most people do them every oil change if they get the coppers... But you probably have the OEM plugs right?

[burner799]

ICM would be my guess. get codes. then swap coilpacs and check again

[a4cefed]

those plugs really need to be changed, i never go more than 6k miles on a set of plugs.

[mike-2ptzero]

Really sounds like plugs since it happens during full load in high gears and high amounts of fuel which needs a good amount of spark to burn. Plugs are also the cheapest thing to replace so thats the best part to start with.

[AudiMV]

any recommendations for spark plugs then?

[calbear]

ngk bk6e if you're stock or bk7e if you've got a bigger turbo