well i dont have a xb but my friend dose but he wants a TRD header do you think from the same size engine you could fit the ones from here

http://trdparts.jp/english/parts_exhaust.html

 

try searching next time

https://www.scionlife.com/forums/viewtopic.php?t=122526

 

ran across one on ebay motors today good luck little pricey but I'd buy if I had that kind of cash flow. I think they look sweet.

 

I love my trd header but good luck finding one there are only a few that own them but they will work fine on the Xa or Xb with drilling and taping and plugging of the hole.

 

Just spend 100 bucks shipped for a megan racing header.

 

there are plenty of options besides dropping tons of cash but I do like the TRD meagan DC strup all good but I like the TRD and it was worth the money to me

 

I can also say that the TRD doesn't add as much power on the top speed of the car my Xa only seems to hit about 110mph I've heard alot of people talk about the other headers making alot more power at top end The trd seems to make more power through the low mid range it puts alot of tourque to the road which I like alot. I looked at the headers desighn and it seems to go back to an old principle that used to be used in motorcycles it seems that the secret in the header is the fact that all the pipes even though they are bent are exactly the same length. you can research this desighn technique online it's pretty interesting and not widely used but makes alot fo sense so I don't know why it isn't done more often. the idea is to use shorter pipes all the same length with sharp bends thus keeping as much back pressure as possible on the motor and still allowing more freeflowing air. this is used alot in japan and on motorcycles which most sportbikes are desighned in japan. but american headers seem to use longer pipes with less curves which seems to be more in line for a V8 where you want to drop backpressure and get as much exhaust gas away from the engine as fast as possible. If I had a pile of headers I would love to install each one and run it on the dyno I think it would be intersting to see the results. Since our engines seem to fight modification TRD is my racing horse of choice.

 

Has anyone actually dyno'd this?

Better question.. has anyone actually dyno'd their xa/xb at all ?

 

here some body dyno'ed there the other day

https://www.scionlife.com/forums/viewtopic.php?t=134690

 

sweet thanks..

 

your welcome anytime I can help you with it feel free to message me illist. the install is pretty straight forward and there is a very good diy on here by slingshot.

 

now if you would only post a chart all would be well.



IMO, typed numbers dont' show the real story.

peace