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Old 07-07-2022, 11:27 PM   #1
sh0rtlife
 
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exhaust system

ok so its obvious i can gain a lil hp and some mpg out of a free-er flowing exhaust..thats just the nature of an engine period

but theres dozens of headers out there...so many that i question if theres any reason to bay extra for X name brand

the big kicker i noticed was the restriction tward the back when the pipe sizes down before the can....

i own a bender so ill make my own pipes under the car..ive got some milspec cats from another project so thats handled too...the real kicker is going to be finding a can i like that doesnt sound like rice.......to be honest im considering running the stocker with a bypass valve connected to the throttle ie more throttle more bypass


with all that said..what do i need to look out for or watch for when it comes to headers.....im not sold on paying extra for a name if something else is just as good...im not looking for "top end" idealy id like to see more bottom end ...ie loads and hill power

and what size pipe...as i know too big can hurt
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Old 07-10-2022, 05:15 PM   #2
mitch9521
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The stock exhaust is 2" until after the resonator, then it drops to 1.75 to go over the axle and to the muffler. Honestly on a mostly stock 1NZ, a full 2" exhaust is enough.
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Old 07-11-2022, 01:44 AM   #3
remcafee
 
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dc sport header is my favorite since it has the longest length runners out of all the headers, it feels to be the best in power gain too
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Old 07-11-2022, 02:07 AM   #4
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thats what i figured open up the remaineder of the exhaust to 2 inch would likely be a nice gain in itself..just wasnt sure if the rest of it could be "improved" or not..i ssume swapping the cat to a milspec high flow should see some kind of gain

the header tho is where i wondered if there is any gain to be had on a stock engine...and of course runner length try y collectors single etc..lots of designs tons of companys making em
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Old 07-11-2022, 02:09 AM   #5
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equal length, and long runners is what you want
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Old 07-12-2022, 05:26 PM   #6
mitch9521
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AFAIK the DC header is discontinued. I can't find it in stock anywhere.
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Old 07-12-2022, 07:58 PM   #7
sh0rtlife
 
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Quote:
Originally Posted by mitch9521 View Post
AFAIK the DC header is discontinued. I can't find it in stock anywhere.

i could probably find....or make a clone if someones got a pic of it...

theres not much to a header if youve got a pic to work from
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Old 07-29-2022, 03:32 PM   #8
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so im assuming THIS is the header i want?

dc sports THC4407


https://static.summitracing.com/glob...thc4407_xl.jpg
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Old 07-29-2022, 06:21 PM   #9
remcafee
 
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yes thats the one, its definitely worth it if you can find one, youll get the most power out of the those beautiful long runners, not like the short garbage you find everywhere else
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Old 07-29-2022, 07:16 PM   #10
sh0rtlife
 
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Quote:
Originally Posted by remcafee View Post
yes thats the one, its definitely worth it if you can find one, youll get the most power out of the those beautiful long runners, not like the short garbage you find everywhere else
thats what i wanted to hear..i may have found a place not out of stock
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Old 07-31-2022, 03:35 PM   #11
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Quote:
Originally Posted by sh0rtlife View Post
thats what i wanted to hear..i may have found a place not out of stock
Do tell lol
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Old 07-31-2022, 06:28 PM   #12
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if shipping goes thru i will
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Old 07-31-2022, 08:38 PM   #13
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i have been trying to get ahold of the vitz rs trd header for a while, i like the design of it and has long runners as well, only thing it has an egr flange do a little trimming and call it a day
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Old 08-01-2022, 01:47 AM   #14
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Quote:
Originally Posted by remcafee View Post
i have been trying to get ahold of the vitz rs trd header for a while, i like the design of it and has long runners as well, only thing it has an egr flange do a little trimming and call it a day
something tells me thats just as hard to find..in fact maybe even harder LOL
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Old 08-25-2022, 03:02 AM   #15
IndestructibleYaris
 
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I used a glasspack from ebay and it sounds great
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Old 01-02-2023, 05:52 PM   #16
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Any luck getting the DC header?
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Old 01-03-2023, 12:41 PM   #17
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Originally Posted by theinteriorautomechanic View Post
Any luck getting the DC header?
nope
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Old 01-06-2023, 01:27 AM   #18
remcafee
 
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i still have my dc header, dang it seriously is out of stock? i just got this like 2 years ago
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