IMCO T924 muffler installed
04-22-2006, 06:30 PM
#41
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Thread Starter
Join Date: 10-03-2005
Location: Sachse, TX NE Dallas
Posts: 2,351
Originally Posted by O6ChevyHHR
So everyone that has it loves it.
daughter thinks her LS cobalt is hotter than ever now.
very happy in this family for what we paid
04-22-2006, 06:49 PM
#43
Senior Member
Join Date: 12-18-2005
Location: Middle Village, NY
Posts: 1,791
I am concerned that it may be too quiet. I am used to hearing the engine while I am driving. What is it like inside the car? I would even consider a glasspack, but would it have too little back pressure? Utlimately I want the car not only to sound nice, but to be faster 
04-22-2006, 06:56 PM
#44
Senior Member
Join Date: 10-14-2005
Location: SoCal
Posts: 5,359
It is faster - you can feel it. Even in neutral reving it, you can tell it's breathing better. 5-minutes after putting mine on I could tell it helped performance. Sorry no dyno charts. We tried several types of mufflers before settling on this one. Most offered too little back pressure for the engine. This particular IMCO (#924), is "just right"
Sound; at startup and idle it is noticeable that it's "not stock." Under normal driving conditions it can be heard in the cab, but not in a "droning" way like fart cans. where it is really noticeable is when you put your foot in it. then it is apparent the engine can breathe freely and make more power.
Here's a short video clip: HHR Exhaust Testing
For the money, you just can't go wrong with this muffler. It leaves just enough breathing "room" for more power with an intake later.
Hope it helps,
Sound; at startup and idle it is noticeable that it's "not stock." Under normal driving conditions it can be heard in the cab, but not in a "droning" way like fart cans. where it is really noticeable is when you put your foot in it. then it is apparent the engine can breathe freely and make more power.
Here's a short video clip: HHR Exhaust Testing
For the money, you just can't go wrong with this muffler. It leaves just enough breathing "room" for more power with an intake later.
Hope it helps,
04-22-2006, 07:27 PM
#48
Deceased
Thread Starter
Join Date: 10-03-2005
Location: Sachse, TX NE Dallas
Posts: 2,351
It's really nice at idle cause you can hear it idling this nice low sound. i couldnt hear it before in front of the house and now i can just hear it.
reving is awesome, fricking limiter makes it no fun
put your foot in it and ohhhhhh soooooo niceeeeeeeeeeee (thinks that is in a Kinks song) and you really feel it.
such a nice low throat sound going through all the gears and just seems like it is not working as hard as much now. because of the lightened week teaching i didnt drive as much and i took my bike out too,,, been a great week on motorcycle after the rain went away.
at cruise at high spped it is barely there which is nice,,, low and throaty at idle and a nice bark going through the gears and then quiet when cruising. kind of like the Van Halen song Best of Both Worlds.
for as reasonable of a mod as one can get,,, this is one you cant go wrong with and Mike is spot on and it makes it more fun to me to drive.
Just one more great reason to get me in it,,, like i need one.
bought 10-1-05 and about to roll over 13,000.
reving is awesome, fricking limiter makes it no fun
put your foot in it and ohhhhhh soooooo niceeeeeeeeeeee (thinks that is in a Kinks song) and you really feel it.
such a nice low throat sound going through all the gears and just seems like it is not working as hard as much now. because of the lightened week teaching i didnt drive as much and i took my bike out too,,, been a great week on motorcycle after the rain went away.
at cruise at high spped it is barely there which is nice,,, low and throaty at idle and a nice bark going through the gears and then quiet when cruising. kind of like the Van Halen song Best of Both Worlds.
for as reasonable of a mod as one can get,,, this is one you cant go wrong with and Mike is spot on and it makes it more fun to me to drive.
Just one more great reason to get me in it,,, like i need one.
bought 10-1-05 and about to roll over 13,000.
04-22-2006, 07:51 PM
#50
Deceased
Thread Starter
Join Date: 10-03-2005
Location: Sachse, TX NE Dallas
Posts: 2,351
Originally Posted by hvrod
CJ ....has more ..mods... then great...
As I mention... as the ones I've only listed...
others might supecede ... my one might over/be worth 10...
As I mention... as the ones I've only listed...
others might supecede ... my one might over/be worth 10...
LS with
1. auto trans w remote start
2. onstar
3. 1 yr safe and sound
4. 4 wheel ABS
5. side curtain air bags
6. XM radio
7. Pioneer 7 spkr amplified system
8. CD/MP3, RDS and Aux input jack
9. front license plate mount
10 ash tray and lighter
11. running boards, color keyed
12. custom splash guards
13. rear bumper cover
Mods I Have Done
1. Vision Chrome Wheels- Discount Tire
2. Two tone custom paint job- Caliber Collision, Plano, TX
3. painted front bumper
4. painted door handles
5. painted back Chevy bowtie
6. I designed a Italisized HHR logo with a dropped R, painted on back on each side and cleared
7. bass clef and connected curved decrescendo logo ghosted on both sides on both doors
8. Pilot Fog Lamps
9. Stainless Exhaust Extension- 3R Racing
10. Polished Chrome Grille- Chevy
11. Chrome 1949 Chevy License Plate
12. Chrome roof rails- Chevy
13. Matching Spoiler- Chevy
14. HHR 3rd brake light decal
15. 1/4 in. Chrome molding around edges of rear window
16. 1/8 in. chrome molding around the front 4 passenger and driver windows
17. 1/4 in chrome molding around back side windows
18. 1/8 chrome trim around front windshield
19. 1/8 chrome trim around tail lights
20. 1/4 in chrome trim on spoiler
21. Wheel well molding completely around the whole mid-line
22. 1955 Chevy Script Emblems- posts cut, sanded level, then 3m taped and applied to hood
23. Grey suede leather Steering Wheel wrap- Auto Zone
24. Shorty multi length radio antennae
25. 57 Chevy Script on back
26. Chevy bowtie visor decals
27. Chevy radio speaker script above radio
28. 2 tone painted front seats
29. added painted bowtie on top middle of front seats
30. Shaggy doll in remembrance of my Son Sean's passing 5-1-05
31. changed out front 4 6.5 in speakers to Blaupunkt
32. Texon HID replacement 8500K headlight bulbs
33. CJS HHR personal custom plates
34. Chevrolet script on front grille
35. Blue Chevy stem caps
36. Replaced stock horn with 2 88 caddy horns
37. IMCO T924 Muffler
38. lowered lock buttons
39. replaced stock tires with Goodyear H rated Eagle GPS
40. Upgraded mats and have both standard and upgraded, standard during week and then Upgraded on weekends or shows.
41. tinted front windows
Last edited by cj krause; 04-27-2006 at 11:55 PM.