My car just started sputtering when I start to build boost in any gear. Under heavy acceleration it almost always studders. I have had a I/C hose come off before and it totally bogged the car down when that happened. So I highly doubt it's a hose. Any suggestions?

 

it feels like it hits a wall, or sometimes feels jumpy? if so, its fuel cut

 

It doesn't feel like it hits a wall. It just starts bucking and jerking for a second or two and then resumes pulling to redline like nothing happened.

 

I actually feels almost as if I were tapping my foot on the pedal around 4-5k RPMs.

 

For some background...
I have an HKS intake, Megan TBE, and a temporary road tune that I got back in May. My friend had a tractrix cable and laptop and tuned everything except my a/f ratio because I didn't have a wideband. I am planning to get tuned after the 1st when I get my school loan check. I haven't had any problems before now.

 

How are your plugs? Check the gap.

I hope you're not running lean or something since your buddy "tuned" everything but the A/F.

 

He actually said I was running rich.

 

Based off of what if you don't know A/F ratio? Black smoke out of the pipe?

 

^^It's been 6 months-I can't remember all of the details. You have a good point.

 

I was able to do redline pulls(I hardly ever do one but I was able to) without this happening up until recently. Now it seems to happen quite often. I don't beat on it too much though.

 

id say sounds like plugs or plug wires, unless if it is ur tune.

get a wide band anyway its totally worth the money.

the inovate lc-1 is a good price and works really well

 

What are the best plugs to run on a lightly modified Evo?

 

im runnin the ones that buschur sells, and they seem to be good.

i think they are br7es?

i think

 

It is doing it almost all the time now. I just ordered some NGKBPR7EIX iridium plugs today. I hope that does the trick.
Does anyone know if these plugs come pregapped? If not, how much should they be gapped?

 

they should be at .026-.028 but they dont recommend gapping iridium plugs.