Having changed the intake and muffler, the sound is just too loud and intrusive.
Oh well. I cannot relax in it and I know my wife will feel the same. We have the weekend to drive it, but I see no gain other than MPG. The muffler resonates and competes with the stereo all the while muddying it up. I know the future stereo upgrade will take care of that, but we are going back to the stock muffler. Oh well, we tried

If we end up taking off the intake too, I guess we'll sell them as a slightly used kit. Still good stuff, just not for these aging and nerve damged ears.
Car design is a compromise. I do not want to compromise the serenity of the cabin for slight tradeoffs in MPG and performance. For the noise we are getting, I want an extra 100 horses. Then it would be justified.

Too bad, I like a properly aspirated engine. Perhaps Chevy gave us the best compromise with stock. Dunno, ......

Don't get me wrong, I'm happy others like the setup, but for us, the trade offs are not worth it. I'll be sticking to decor mods for a while unless some new suspension thingie comes about and we all absolutly must have it!

 

It's all good. Not every modification works for every HHR's owner tastes and preferences.
At least you gave it an honest try!

 

Robert, Are you sure you were sold a IMCO-924 ???and not just someone's turbo muffler????
I have to put my foot into it, and stick my head out the window to hear mine....especially over the CGS intake.

 

maybe i'll hold off buying CGS intake also... i'd much rather have a quiet ride than performance.... guess i need to hear one in person before i decide

 

how long have u had the IMCO?
after i had the 924 around 4 to 6 weeks to me it got alot quieter.
I hear the intake more than the muffler.

no biggie, we have to do what we have to do

i love mine

 

Cj's Stereo is way louder than his muffler..

 

Thank you Tom
and yes it is

that got me laughing good

 

Your right Harpozep it is louder than stock but man i love the sound of the imco and the intake when you put your foot into it. I've seen people a block away turn to see what's coming.

 

I'm not the only one that mods their car and then decides to totally remove what they did.

 

My Muffler guy thinks I'm batty, but he'll redo it on Tuesday if that is what I want. That gives us a few more days to break it in.......... stay tuned.........
Some folks here have said it gets a bit quieter with time.

The muffler has been on a day, the CGS intake , a few weeks. I cannot hear the intake at all over the muffler rumble.

Tonight, after I wrote the post and left work, I had all the windows down, sunroof open, and put my foot on it!
I was in the mood for the performance/noise and it was quite fun

Too bad we cannot run two exhausts and pick from them as we need .

The car actually chirped its tires which it had not done before. The road noise was high enough with all the windows open that I did not mind the muffler sound so much. Not relaxing, but invigorating, but that is what I have the convertible Corvairs for.
They are the "fun" performance oriented cars, or at least my '67 is. I do know loud with four carbs on an open roofed car with twin 3 3/4" flow through Ford Ranger Mufflers and an exhaust leak! My Bazooka bass tubes have a real hard time overcoming the engine sound Sometimes the music and engine frequencies boost each other and I think the car is going to explode! This is what I used to call fun. .... not so much any more though

Now I'd rather hear my daughter talk to me from the rear seat than keep yelling back at her " What? What did you say?" That is what is going on in the HHR right now. Our family car needs to remain family friendly to all, and not just middle aged dad trying to go where he perhaps should not

Addendum: After eighteen years of great turn-the-key-and-drive service, the '67 Corvair has blown an exhaust valve seat I knew the time would come, as 140's always have some valve issues, but hey I got eighteen years Now the decision to sell it as is or fix it. It has to go anyway as we need the room and my wife "convinced" me we have get rid of one. Twelve grand into it, the first $2,500.00 takes it I guess. Perhaps I should list it in the for sale section if we have one here ( I never looked ).
Heck, the stereo cost two grand back in '89! Anyone want a fun project on a solid body classic Chevy? Let me know. Nice car needs a new home and some engine work. It has new tires and a lot more.

Yes, I will likely go back to stock mufflers on the Corvair too if I keep it
http://www.pbase.com/harpozep/1967_corvair