My friend just bought a 2006 Cobalt base coupe and just installed the Injen SRI on it. After we were done installing it I told him to give it a few revs to see how it sounded. When he did he revved up to about 3500 rpm first time and then went to rev a little higher but the car would not rev past about 4500 rpm. My first thought was the car wasn't used to the intake yet, but we took it out on the road and when in gear and floored the car went past 4500 rpm just fine. When we returned, he revved it again in Neutral and same thing won't rev past 4500 rpm. My question is: Is this normal, does the car have a "free rev" cutoff? I've never noticed this on my 05 LS but then again I've never tried to rev it past 4500 rpm in park or neutral. Anybody got any insight on this?

 

Is the car a manual or auto? Most of the auto's have rev' limiters...but I know my 2.2 base will rev past 5k in neutral...

 

Its an auto.

 

Auto's don't go past 4.5K.

 

and thus......the all around well known fact that manuals are better is once again proven true

 

Don't start that again. Autos are better for racing. 5 spds are just plain more fun though.

 

There are a lot of pros and cons for each. I look at is as a personal preference rather than which one is better.

 

I wanna remove that auto rev limiter on mine, or at least boost it up to 6k RPM, its stupid not being able to intimidate people in neutral

 

haha you are going to need to do a little more to intimidate people, its still a 4 cyl.

if you want to intimidate, figure out a way to get a v8 under that hood

 

I'm working on that

 

My girls 2003 Auto Alero has the 2.2 eco and hers is the same way...

 

I'm 16, all i need is 150+ hp to intimidate people

 

You don't wanna get caught doing stuff u shouldn't at that age either Junior

 

Yeah, thats a nuetral rev limiter. Those suck. And FYI, I think manuals are better until like 12.0, then an auto is better/faster.

 

not the auto trannys equipped in 90% of most cars

 

come now Jerry, don't be jealous

I'm driving an auto now, I hate it, I want my Suckah back

 

don't put it in neutral put in first with your foot on the clutch my 06 ls coupe revs to to 6500 like that

 

I have auto

 

The Auto trannys in our 2.2s are good to 190 HP and 200LBS of Torque without modification don't forget.

 

Thanks for all the info guys.

I thought someone said the auto drivetrain was good til about 225 hp. Anyone back me or RedBaseBolt up on this?

 

To stay on topic...

Yes, you hit normal neutral rev limiter.

You would hit it at 6500 RPM if you were in gear.

There are other things that will cause it to operate as well. For instance, I have a 3000 RPM stall torque converter. Your car will stall at about 2400. When I try to stall my converter, the limiter kicks in at about 2700.

 

gotta go 5 speed man that auto makes the cobalt worthless

 

1: this thread is from 2006.

2: I'll race you with my auto any day. And you'll lose.