i noticed that tonight when i was out running my car that when the rpm's get up to 6500-7000 my RPM's flutter a little bit. just wondering if anyone else had this happen. or am i just being paranoid.

 

check and see what ur afr is

 

i'm kinda dumb on this one. how do i check this without a gauge? i only have a boost one setup

 

my car does the same thing but only in 3rd and 4th gear, second is fine. Idk what it is.

 

i wasn't sure if it was suppose to do it. long time since i wound out the car like that. i was trying to push it a little blow out some of the carbon that builds up over time.

 

It's probably crank case pressure that's about when it will cause it to flutter -10an fitting on the valve cover to a -10an on the intake

 

no dude excessive ccp will pop a dipstick or make it leak around a seal or gasket not flutter at high rpm / you need to get a wideban afr such as an aem and hook it up and see whats going on with ur afr

 

you should get a tune. you have aftermarket mods that you should get tuned for. and buy a damn wideband

 

i don't have any real mods. there barely even considered bolt on's

 

That can happen but i have been told by several reputable people (Area, Elite Cyborg) that having to much crank case pressure causes rpms to flutter around 6800rpms

 

You guys know what else can cause it to flutter? Too large of a spark plug gap, you may be blowing out the spark up high. Check your plugs, tighten the gap a little and see if it still happens. Sometimes people overlook the simple things...

 

i will certainly take a look at this. if it helps. i am running the E3 style plugs

 

i have heard nothing but bad things about e3s. especially on cobalts

 

ngk stock#4644 gap around .032

 

good call on the spark blow out idea ..... My old SS/SC was finichy about gaps and would do what the OP described in the higher rpm range if the gap was higher than .035 .

I would definitely get rid of those E3 plugs and go back to NGK's ... I remember a few people had problems with that style plug.

 

misfire

 

sounds good. they will be taken out this weekend then.