Catted Headers

[Exrald]

Originally Posted by mr_squirrel

For a 2017 MT, is it still worth it to change to a catless header?

Sent from my ONEPLUS A3000 using Tapatalk

If you do, sell me your header. Lol

2013 Scion FRS @Exrald.frs

[funwheeldrive]

Originally Posted by Exrald

I was thinking it'd still be carb legal. Time to do catless and save the stock header then! Gonna smell the sweet scent of HP boost!

2013 Scion FRS @Exrald.frs

Careful with the catless stuff. If you get caught without a cat on your car in California that could be a huge fine.

[overlookedx]

Originally Posted by funwheeldrive

Careful with the catless stuff. If you get caught without a cat on your car in California that could be a huge fine.

And it also smells like crap and is raspy. I did catless the first time, went catted the second time and I like it so much better. Even with a muffler delete it's not too loud.

[Xxyion]

Originally Posted by overlookedx

And it also smells like crap and is raspy. I did catless the first time, went catted the second time and I like it so much better. Even with a muffler delete it's not too loud.

That depends on the setup. (for the rasp)

I origionally went WORKS Muffler delete CBE with the OpenFlash headers and i had zero rasp.

I find a lot of rasp can be due to the materials and technique used in the construction of the header. A thinker metal wall will produce less volume and rasp as well as better welds.

I just picked up JDL headers and with my Nameless setup it shouldnt produce any rasp. Still have stock front pipe.

[nikitopo]

Originally Posted by chaoskaze

They are 5% wider from exhaust port & 8% wider up till the cat.

I am in the process to order the new one (+'16). I cannot install an aftermarket header, because they cannot get approval here.

[finch1750]

Originally Posted by nikitopo

I am in the process to order the new one (+'16). I cannot install an aftermarket header, because they cannot get approval here.

16 is the old one still, 17+ gets the new one. And only MT so make sure its the right part #

[nikitopo]

Originally Posted by finch1750

16 is the old one still, 17+ gets the new one. And only MT so make sure its the right part #

Yes correct, the 17+ one which is installed in MT.

[Student Driver]

question... are there any gains to going catless---> straight pipe? grom what I understood, the loss of backpressure made you lose power? don't know much about tuning or anything so any info helps.. also if you were to go full open like that would you need an OFT or tune of some sort to make it run better?

[matchamochi]

Originally Posted by overlookedx

And it also smells like crap and is raspy. I did catless the first time, went catted the second time and I like it so much better. Even with a muffler delete it's not too loud.

I run gruppe-s UEL, e85, and a perrin 2.5 resonated.

My car doesn't attract any attention, smells GOOD, and has 0 rasp.

[tintumz22]

Originally Posted by matchamochi

I run gruppe-s UEL, e85, and a perrin 2.5 resonated.

My car doesn't attract any attention, smells GOOD, and has 0 rasp.

do you have any sound clip?

[matchamochi]

Originally Posted by tintumz22

do you have any sound clip?

No, but I'm at the bi weekly/weekly meets all the time. Welcome to come through and hear it.