Go Back   Scion XD Forum > xD Modification > Engine/Performance

Engine/Performance All things engine and performance.


Reply
 
Thread Tools Display Modes
Old 09-26-2010, 02:02 PM   #1
FBI
Member
 
Join Date: Sep 2010
Name: FBI
Posts: 40
Default Exhaust
I just had the TRD exhaust put on my xD. I notice a little more torque. The engine seems like it needs a little less gas starting out in 1st. Does anyone know what gains can be had from a TRD exhaust in terms of hp or trq? By the way it sounds very good. Has a lot of low bassy note to it and stays that way even in the higher RPM's.

Thanks in Advance
FBI is offline   Reply With Quote
Old 09-26-2010, 03:57 PM   #2
 
xd_kidd's Avatar
xd_kidd
OG Member
Full Access Member
 
Join Date: Sep 2009
Location: gaithersburg md
Name: chris
Age: 33
Posts: 616
Default
for this axle back. its pretty minimal about 1-3 horses. i always found the lowering springs made my car a bit quicker.
xd_kidd is offline   Reply With Quote
Old 09-27-2010, 05:45 PM   #3
 
wooly willy's Avatar
wooly willy
Member
 
Join Date: Aug 2010
Location: OH!
Name: AJ
Age: 36
Posts: 48
Default
Originally Posted by xd_kidd View Post
i always found the lowering springs made my car a bit quicker.
I don't think I understand... Does lowering a car affect the drag/aerodynamics enough to actually be noticeable, or are you joking in a manner similar to "spoilers/trunk wings add horsepower."
wooly willy is offline   Reply With Quote
Old 09-27-2010, 06:07 PM   #4
 
xd_kidd's Avatar
xd_kidd
OG Member
Full Access Member
 
Join Date: Sep 2009
Location: gaithersburg md
Name: chris
Age: 33
Posts: 616
Default
Originally Posted by wooly willy View Post
I don't think I understand... Does lowering a car affect the drag/aerodynamics enough to actually be noticeable, or are you joking in a manner similar to "spoilers/trunk wings add horsepower."
Lol your funny. No I don't mean stickers adding hp joke. As in yea more aerodynamic when its closer to the ground. Doesn't add power but feels like it. Causes less lag at higher top end imo. And a lot less roll in turns .. btw in behalf wif df springs
xd_kidd is offline   Reply With Quote
Old 09-27-2010, 01:15 PM   #5
CXTKRS1
Super Moderator
Super Mod
 
Join Date: Jul 2009
Location: Louisiana
Name: Chris
Age: 38
Posts: 637
Default
I think the highest dyno gains have been 6 fwhp.
CXTKRS1 is offline   Reply With Quote
Old 10-06-2010, 09:31 PM   #6
mcbrew
Senior Member
Full Access Member
 
Join Date: Aug 2009
Location: Annapolis, MD
Name: Jesse
Age: 48
Posts: 130
Default
Tighter springs, especially in the rear, will translate to more torque at the wheels because less torque is lost making the car squat. I notice a big difference when I have 20 PSI or more in my rear spring air bags. Of course, the ride is more harsh... but there is a notable difference when taking off from a stop.

The same goes for torque dampers on an engine. The less torque is wasted making the engine twist on its mounts, the more gets to the wheels.


__________________
-McBrew

Current car: 2011 Subaru Outback 2.5i Premium w/ Lineartronic CVT transmission. Steel Silver.

SOLD: 2009 Scion xD - BRM, 16" alloys, VSC, K&N drop-in air filter, Thule Aero roof bars, TRD sway bar, TRD short shift, TYC LED tails, Curt class-1 tow hitch, Italian leather shift & brake boots, Red Line MT-90 in the trans, Amsoil 0w20 in the engine, ATE SuperBlue Racing brake fluid.
mcbrew is offline   Reply With Quote
Old 10-06-2010, 11:10 PM   #7
 
xd_kidd's Avatar
xd_kidd
OG Member
Full Access Member
 
Join Date: Sep 2009
Location: gaithersburg md
Name: chris
Age: 33
Posts: 616
Default
hey mcbrew,
im trying to have a small meet for xd's in the dmv and p area.
check it out if your interested

http://www.scionlife.com/forums/showthread.php?t=194169
xd_kidd is offline   Reply With Quote
Old 06-30-2011, 07:19 PM   #8
xDgurl
Junior Member
 
Join Date: Jun 2011
Location: Idaho
Name: Brittney
Posts: 8
Default TRD exhaust
I have the TRD axleback exhaust and love the sound. It is a deep sound and it is not obnoxious. Just right. I would recommend it to anyone.
xDgurl is offline   Reply With Quote
Old 10-06-2010, 10:28 PM   #9
 
Jay Smyles's Avatar
Jay Smyles
Member
 
Join Date: Aug 2010
Location: Dover, Delaware/ Panama City, FL
Name: Jason
Age: 37
Posts: 34
Default
very deep. Never thought that much into it.
Jay Smyles is offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump