Breathe in...Breathe out

[Morgasm69you]

Hey i searched, so dont attack me! i know there is a difference with the throttle body from the xd to the xd2, because i have an 05, and i dont know where to get a BBTB and P&P IM. I was thinking to just go to a machine shop, but i would rather go with something engineered for my car...like from kspec

BBTB (http://kspec.com/list.php?ac_id=68&ai_id=671)

P&P IM (http://kspec.com/list.php?ac_id=68&ai_id=657)

I figure it would be 178937493020 times cheaper to go to a machine shop, but i just was wondering if anyone knew...thanks!

[only1db]

also check in with FordFaster... i know he has done porting in the past...hit him up...

[Morgasm69you]

oh yeah, i forgot i read that somewhere...well i also forgot to add another mental dilemma (with my car :D ) off topic!...the sticky with the exhaust options seems a tad outdated...what headers would require the least or no fabrication (*hint hint* o2 sensor), i can get hot shots, but i hear that they arent the best for fitment...any opinions on the IM and TB are still appreciated!!! sorry for being so damn difficult!

[Vampyrate]

depends on your emissons (stupid VA requires 2 cats) but the best (and cheapest that ive noticed) is a 4-2-1 header setup from either shark racing or kspec, or wherever you want.

one idea that i had that may work with the o2 sensor as to not throw a cel is to get a stock cat, or maybe highflow and bolt that right off of the cat and then onto the exhaust. one problem i see with this is that the exhaust would have to be shorter, and possibly wouldnt work at all. thats why i want to wait until i get better footed financially, or have someone with the money to try it out and see if my hypothesis on this is correct.

[Jonny666]

The absolute only way to put in a header and not get a cel is to lengthen the seccond O2 sensor wires and relocate the sensor behind a cat. The stock one works without a cel. and i've had a Magnaflow unit in there for about a week now without a cel. The distance between the cat and the 2nd O2 sensor is also very important. I will post pictures of my CELless header setup if anyone is interested. by the way i have the shark racing 4into1 header.

[Vampyrate]

i need both cats for me to pass inspection/emmissions though, that is my only problem with that setup

[Morgasm69you]

i have no idea about emissions...but i know there is a way that i think ford may have siad about putting some sort of doo-hickey on the wiring of the o2 sensor to make it read the correct air flow without actually being in there...i know i'm opening a can of worms here...any comments?

[Jonny666]

Some of the V6 tib guys have gotten away with zip tieing their 2nd O2 sensors up in their engin compartment. This works on our motor's as well.....for about 1000k. then you get a CEL. I've heard of something called a plug defouler that apparently wont give you a CEL but im not sure how much they cost or where to get one. Or for the cost of an O2 bung / 20ft of wire / and an hour or so of your time you can relocate your 2nd O2 sensor and NEVER get a CEL. its that easy. could probably be done in 1/2 hour if you knew what you were doing. and Aaron, the headers from shark racing and kspec.com will both delet your first cat so if you need both to pass inspecion you will have to swap back to the factory system anyways.

[Bnystrom]

also check in with FordFaster... i know he has done porting in the past...hit him up...
IIRC, he also used that Airram setup and ultimately tossed it because it REDUCED horspower. A BBTB will do you no good on an Elantra either, unless you're going to supercharge or turbocharge it. Porting and polishing the stock parts WILL help somewhat.

[only1db]

^ air ram??? i must have missed that...i know Jay was working on something like that...but he never got it together...

throttle body will give you something and so will the manifold...but you cant go too big...but making it a couple of mm bigger is a good thing and will INCREASE power.

[Bnystrom]

^ air ram??? i must have missed that...i know Jay was working on something like that...but he never got it together...
Airram is a brand name. It's molded into the top of the throttle body in the pic he posted.

throttle body will give you something and so will the manifold...but you cant go too big...but making it a couple of mm bigger is a good thing and will INCREASE power.
I suppose that you have before and after dyno data to prove this? FordFaster found that he lost power when he increased the TB size. I've seen the same thing posted by others who've actually tested it, rather than assuming that there would be gains.

[BColeman]

The IM P&P, when done correctly, will yield gains. The purpose of this is to reduce turbulence within the IM so the air can travel more directly to the cylinder, thus resulting in faster and more efficient combustion.

The BBTB is a great idea, but really only if you are going F/I. You could get away with the BBTB N/A, but you will need to do other work as well. It would really be best to let FordFaster, or any of the other guys who have done this, just P&P and knife edge the butterfly valve of your present TB. You'll notice a small gain with this, and there's less risk of losing power.

Aaron, as far as needing 2 Cats, by a header, cheap one from eBay. Sell me the mid pipe, cause you can't use it. By 2 (TWO) high-flow cats, and have them welded together to a "mid-pipe" from the bottom of the header to your current exhaust. This way you'll be in compliance with the regulations reguiring your stock Cats, and since there's some fab work necessary, just have the shop weld on a bung for you exactly where you need it so you can pass inspection and not have a CEL.