Ever since I saw a blog about guys going to straight pipes I knew I had to do this.
I bought prebent 2.5" 304 stainless tubing. I had a 0.500" thick 304 stainless flange CNC machined to match the turbo. I do have the cad drawing if anyone wants it.
I cut the tubing into segments and tig welded the seams. The flex pipe is a 2.5" stainless item.
This was a great project and the results were beyond what I expected. On the first drive, my buddy that drives a tricked out WRX was just amazed at the difference this one change made. I wish I would have been able to do a dyno run before and after. The sound is good, my wife lets how you can hear the turbo spool up and when you shut the car off you can hear it spinning down.
The car does have a "fart can" sound at about 2500 to 3000 rpm at certain loads. As I drive the car more I will decide if I want to add a resonator or not.
The pics I am attaching were during the process. The down pipe is a real pain but worth it.
I bought prebent 2.5" 304 stainless tubing. I had a 0.500" thick 304 stainless flange CNC machined to match the turbo. I do have the cad drawing if anyone wants it.
I cut the tubing into segments and tig welded the seams. The flex pipe is a 2.5" stainless item.
This was a great project and the results were beyond what I expected. On the first drive, my buddy that drives a tricked out WRX was just amazed at the difference this one change made. I wish I would have been able to do a dyno run before and after. The sound is good, my wife lets how you can hear the turbo spool up and when you shut the car off you can hear it spinning down.
The car does have a "fart can" sound at about 2500 to 3000 rpm at certain loads. As I drive the car more I will decide if I want to add a resonator or not.
The pics I am attaching were during the process. The down pipe is a real pain but worth it.
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