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07-07-2022, 11:27 PM | #1 |
Drives: 2007 5dr canadian import Join Date: Dec 2016
Location: pacific north WET
Posts: 1,025
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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 |
07-10-2022, 05:15 PM | #2 |
Gen 3 > Gen 2
Drives: NCP131, F-150 Join Date: Jul 2019
Location: Red Deer, AB
Posts: 501
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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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2014 NCP131 5 Speed 2007 F150 4.2L 5 Speed 2013 Rav4 LE AWD Autotragic - Wife's |
07-11-2022, 01:44 AM | #3 |
Drives: 2007 Toyota Yaris 3 door Join Date: Sep 2018
Location: Arizona
Posts: 405
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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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07-11-2022, 02:07 AM | #4 |
Drives: 2007 5dr canadian import Join Date: Dec 2016
Location: pacific north WET
Posts: 1,025
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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 |
07-11-2022, 02:09 AM | #5 |
Drives: 2007 Toyota Yaris 3 door Join Date: Sep 2018
Location: Arizona
Posts: 405
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equal length, and long runners is what you want
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07-12-2022, 05:26 PM | #6 |
Gen 3 > Gen 2
Drives: NCP131, F-150 Join Date: Jul 2019
Location: Red Deer, AB
Posts: 501
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AFAIK the DC header is discontinued. I can't find it in stock anywhere.
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2014 NCP131 5 Speed 2007 F150 4.2L 5 Speed 2013 Rav4 LE AWD Autotragic - Wife's |
07-12-2022, 07:58 PM | #7 |
Drives: 2007 5dr canadian import Join Date: Dec 2016
Location: pacific north WET
Posts: 1,025
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07-29-2022, 03:32 PM | #8 |
Drives: 2007 5dr canadian import Join Date: Dec 2016
Location: pacific north WET
Posts: 1,025
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so im assuming THIS is the header i want?
dc sports THC4407 https://static.summitracing.com/glob...thc4407_xl.jpg |
07-29-2022, 06:21 PM | #9 |
Drives: 2007 Toyota Yaris 3 door Join Date: Sep 2018
Location: Arizona
Posts: 405
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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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07-29-2022, 07:16 PM | #10 |
Drives: 2007 5dr canadian import Join Date: Dec 2016
Location: pacific north WET
Posts: 1,025
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07-31-2022, 03:35 PM | #11 |
Gen 3 > Gen 2
Drives: NCP131, F-150 Join Date: Jul 2019
Location: Red Deer, AB
Posts: 501
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Do tell lol
__________________
2014 NCP131 5 Speed 2007 F150 4.2L 5 Speed 2013 Rav4 LE AWD Autotragic - Wife's |
07-31-2022, 06:28 PM | #12 |
Drives: 2007 5dr canadian import Join Date: Dec 2016
Location: pacific north WET
Posts: 1,025
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if shipping goes thru i will
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07-31-2022, 08:38 PM | #13 |
Drives: 2007 Toyota Yaris 3 door Join Date: Sep 2018
Location: Arizona
Posts: 405
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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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08-01-2022, 01:47 AM | #14 |
Drives: 2007 5dr canadian import Join Date: Dec 2016
Location: pacific north WET
Posts: 1,025
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something tells me thats just as hard to find..in fact maybe even harder LOL
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08-25-2022, 03:02 AM | #15 |
Drives: 2007 Toyota Yaris Sedan Join Date: Feb 2019
Location: Harrisburg, PA
Posts: 149
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I used a glasspack from ebay and it sounds great
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01-02-2023, 05:52 PM | #16 |
Drives: Slowcart Join Date: Dec 2022
Location: KY
Posts: 21
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Any luck getting the DC header?
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01-03-2023, 12:41 PM | #17 |
Drives: 2007 5dr canadian import Join Date: Dec 2016
Location: pacific north WET
Posts: 1,025
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01-06-2023, 01:27 AM | #18 |
Drives: 2007 Toyota Yaris 3 door Join Date: Sep 2018
Location: Arizona
Posts: 405
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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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