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2022 Chevrolet Trailblazer RS
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49 Posts
Patiently waiting for video ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Is it up yet?
................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................How bout now?
 

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2021Trailblazer RS AWD Scarlet Red Metallic
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869 Posts
Soon, lol.
 

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Premium Member
2022 Chevrolet Trailblazer RS
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49 Posts
Not a Trailblazer. But it is a 1.3l Turbo
 

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2021Trailblazer RS AWD Scarlet Red Metallic
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869 Posts
My exhaust is finished. I will start another topic with pictures and a sound clip. I'm going to try to put 50+ miles on it today to allow the PCM to adjust to the added airflow from the K&N filter and rear muffler delete. The sound is surprisingly deep for such a small engine and doesn't sound bad at all. I might just leave the front muffler alone instead of replacing it. I'm curious what the inside of that little muffler looks like, chambered, straight through, etc. If it's chambered then adding a straight through muffler would free up even more power. If I had guess on the power increase I'd say somewhere around 10-15hp and 10-15 ft lbs tq. I thought the modifications would improve the top end the most, but it appears all the extra power comes on right off idle and into the lower rpm range.
 

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Premium Member
2022 Chevrolet Trailblazer RS
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49 Posts
I know on my Subaru Forester XT the first muffler was straight thru. The rear muffler was hugely restrictive.
 

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Premium Member
2022 Chevrolet Trailblazer RS
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49 Posts
You should try and get a 0-60 time to see if there is any improvement. Butt dyno's are sometimes inaccurate...lol
 

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80 Posts
Usually the first muffler is a 24" resonator. Removing that would produce the most noise, but performance wouldn't be improved and may even be worse. The turbo downpipe catalytic converter removal/replacement is going to produce the most performance, but is illegal to remove. Look up catless downpipe on other turbo cars and see how huge the gains are.
 

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Premium Member
2022 Chevrolet Trailblazer RS
Joined
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49 Posts
Usually the first muffler is a 24" resonator. Removing that would produce the most noise, but performance wouldn't be improved and may even be worse. The turbo downpipe catalytic converter removal/replacement is going to produce the most performance, but is illegal to remove. Look up catless downpipe on other turbo cars and see how huge the gains are.
Those type of mods are usually followed by tuning. In order to get the most out of the mods a dyno tune is the best option.
 
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