Exhaust + Backpressure Question - Toyota Yaris Forums

CoryM · 08-27-2015, 11:58 AM

I've not used a DC header, and exhaust flow is not overly simple, but it *should* help. The longer primary tubes help increase velocity. The primaries are larger on the DC which may not help in that regards, but people comment on the increased low-end so it's probably good. Short ram intake will probable not do much either way to be honest. Unless the Yaris is one of the few vehicles where the OE intake is choked up, replacing them often does not help (and sometimes makes it worse). If you want torque, consider a "Tooter spacer" http://www.yarisworld.com/forums/showthread.php?t=49609 it does the same thing as longer primary header tubes.

Putting the OE exhaust, with an aftermarket muffler, on will help too. The pipe size is fine, but the mufflers perform poorly.

Cheers.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
newbie exhaust question...	tooter	DIY / Maintenance / Service	22	08-24-2013 05:13 AM
Exhaust Question	TimmyTwo2	Third Gen Yaris General Discussion	8	06-15-2012 11:18 PM
Exhaust question	cougar65	Performance Modifications	4	05-04-2012 11:19 PM
exhaust help	naossoan	Performance Modifications	6	09-24-2011 02:06 PM
FS: Thunder Axle-back Exhaust for Yaris LB	FunctionSpec	Items for Sale by private party	38	06-03-2010 02:33 AM

08-27-2015, 11:58 AM	#6
CoryM Drives: 2009 5-door, 5-speed Join Date: Sep 2011 Location: White Rock BC Posts: 687	I've not used a DC header, and exhaust flow is not overly simple, but it should help. The longer primary tubes help increase velocity. The primaries are larger on the DC which may not help in that regards, but people comment on the increased low-end so it's probably good. Short ram intake will probable not do much either way to be honest. Unless the Yaris is one of the few vehicles where the OE intake is choked up, replacing them often does not help (and sometimes makes it worse). If you want torque, consider a "Tooter spacer" http://www.yarisworld.com/forums/showthread.php?t=49609 it does the same thing as longer primary header tubes. Putting the OE exhaust, with an aftermarket muffler, on will help too. The pipe size is fine, but the mufflers perform poorly. Cheers.