How To Port and Polish the Throttle Body and Intercooler Y Pipe BONUS: Coolant Bypass - Page 3

Otter · 10-31-2006, 06:57 AM

if you can't buy it seperately from subaru, you might be able to get one from someone who is now running a FMIC

Pitcherman · 10-31-2006, 08:38 AM

Hmmmm. I have an 04 and mine is one piece.....weird

***snorky*** · 10-31-2006, 09:01 AM

yeah you can more than likely order it from subaru. otherwise like otter said you could buy it off another member. or find a wrecked sti.

i guess i should have updated this thread because since then i ported mine to 1 inch.

***snorky*** · 10-31-2006, 09:03 AM

post the part number and price here if there is one. for other people with the two piece that might want to change over because the one piece is undoubtedly smoother flowing.

***snorky*** · 10-31-2006, 09:06 AM

i'm going to port my throttle body this weekend just for the hell of it. i will post it up here too if anyone is interested.

Otter · 10-31-2006, 09:14 AM

Hey BTW, I did this mod a couple of days ago... Best Free Mod Ever! I find it hard to believe though after feeling the throttle body, that there would be no benefit from porting it as well.

Did you feel any improvement after going with a deeper porting?

BTW, I polished mine to a nice high shine as well, simply b/c I had a polishing head that came with my Dremel grinding kit, and I wanted to try it out. I also used the polishing wheel to polish as deeply as I could down the pipe from all 3 openings. Not sure polishing made any difference, but it'll be pretty if anyone ever looks in there

.

Got Torque? · 10-31-2006, 03:58 PM

Quote:

Originally Posted by Pitcherman

Hmmmm. I have an 04 and mine is one piece.....weird

I cant believe that. Why is mine a 2 piece then. That really makes me wonder if they changed it before 05 on the later production 2004s. Because my sti was made in 2003 when the 04s first came out. Maybe that's why? Either way, pisses me off. I need to get the one piece, so if anyone out there has gone to a fmic, which I plan on doing eventually, and doesn't need their 1 piece y pipe anymore I will buy it from you.

Otter · 10-31-2006, 04:38 PM

I bet they changed it mid-model. They did that with the motor mounts on the 06 too (they chnged from crappy ones to good ones in Jan. production date).

as far as the FMIC guys, you should post something up in the Want To Buy forum... Good luck!

boostedrex05 · 10-31-2006, 05:07 PM

nice good idea i ported the elbo on my BOV lastnight so it flow's better i just did the one side where the squarish angle was and rounded it with a mini dremil and sanded it smooth. i noticed it stay's in boost better between shift's i cant post pics to show u guy's cuz my computers being gayo but yea take it apart and ull see it's very easy if your really ballzy go all out port match the stock manifold and such just think about thing's to port little stuff and dont go to crazy just make stuff smooth.with round angle's good luck.

***snorky*** · 10-31-2006, 07:45 PM

Quote:

Originally Posted by Otter

Hey BTW, I did this mod a couple of days ago... Best Free Mod Ever! I find it hard to believe though after feeling the throttle body, that there would be no benefit from porting it as well.

Did you feel any improvement after going with a deeper porting?

BTW, I polished mine to a nice high shine as well, simply b/c I had a polishing head that came with my Dremel grinding kit, and I wanted to try it out. I also used the polishing wheel to polish as deeply as I could down the pipe from all 3 openings. Not sure polishing made any difference, but it'll be pretty if anyone ever looks in there

.

I didn't feel any difference with porting deeper. I didnt' expect to, it was more of a piece of mind thing.

I'm sure polishing it will help. It def couldnt hurt. I have gotten a polishing wheel since i did this mod too. Maybe i will polish mine too. Polishing is a pita though.

When i port my tb this weekend, i'm going to take a look at the butterfly/ throttle plate. maybe i'll knife edge that!

***snorky*** · 10-31-2006, 07:47 PM

Quote:

Originally Posted by boostedrex05

nice good idea i ported the elbo on my BOV lastnight so it flow's better i just did the one side where the squarish angle was and rounded it with a mini dremil and sanded it smooth. i noticed it stay's in boost better between shift's i cant post pics to show u guy's cuz my computers being gayo but yea take it apart and ull see it's very easy if your really ballzy go all out port match the stock manifold and such just think about thing's to port little stuff and dont go to crazy just make stuff smooth.with round angle's good luck.

definitely post pictures!

Anyone else feel free to port ideas/pics of other stuff to port. i can host pics too if someone can't.

maximus · 11-01-2006, 03:23 PM

I hope to be doing this mod. Great idea BTW. I am doing this in my machine shop with a stationary router. Do you have to go as far as an inch? Is the edge just have a thin lip not like a knife edge? Can't wait for your pics for doing the throttle body Please post pics for throttle body removal and all that stuff.

***snorky*** · 11-01-2006, 05:09 PM

Quote:

Originally Posted by maximus

I hope to be doing this mod. Great idea BTW. I am doing this in my machine shop with a stationary router. Do you have to go as far as an inch? Is the edge just have a thin lip not like a knife edge? Can't wait for your pics for doing the throttle body Please post pics for throttle body removal and all that stuff.

Thanks. I originally did 3/4". I figured 3/4" was a good enough. 1" didnt' really make any sort of noticable difference.

The edge of the pipe is a thin lip, not a knife edge. I didn't want to risk cutting through the silicone elbow. also having a little more material on the edge would provide some rigidity and be less easy to dent or crack.

I will post pics and instructions of the TB port (and possible knife edging or the throttle plate) this weekend or shortly after.

maximus · 11-01-2006, 05:35 PM

Cool I'm going to disassemble right now. Hope I can get this done tonight. Let you know how it comes out. Thanks again.

***snorky*** · 11-02-2006, 12:04 PM

sounds good

10-31-2006, 06:57 AM	#31
Otter Silver Member Car: 06 STI CGM Fav Mod: Stereo Location: Napa, CA Posts: 598 Join Date: Nov 2005 Trader Rating: (7)	if you can't buy it seperately from subaru, you might be able to get one from someone who is now running a FMIC This ad is not endorsed by this member. Please register or login to hide this ad.

11-02-2006, 12:04 PM	#45
*snorky* If in doubt, flat out Car: 32J GDFDYEH Fav Mod: Fullerton's Qrack on my car Location: Chicagoland Posts: 3,773 Join Date: Apr 2006 Trader Rating: (23)	sounds good This ad is not endorsed by this member. Please register or login to hide this ad.

10-31-2006, 08:38 AM	#32
Pitcherman Village Idiot Car: 04 JVP STi Fav Mod: Blitz NUR Spec R Location: B.F.E, Texas Posts: 7,960 Join Date: Apr 2004 Trader Rating: (3)	Hmmmm. I have an 04 and mine is one piece.....weird

10-31-2006, 09:01 AM	#33
*snorky* If in doubt, flat out Car: 32J GDFDYEH Fav Mod: Fullerton's Qrack on my car Location: Chicagoland Posts: 3,773 Join Date: Apr 2006 Trader Rating: (23)	yeah you can more than likely order it from subaru. otherwise like otter said you could buy it off another member. or find a wrecked sti. i guess i should have updated this thread because since then i ported mine to 1 inch.

10-31-2006, 09:03 AM	#34
*snorky* If in doubt, flat out Car: 32J GDFDYEH Fav Mod: Fullerton's Qrack on my car Location: Chicagoland Posts: 3,773 Join Date: Apr 2006 Trader Rating: (23)	post the part number and price here if there is one. for other people with the two piece that might want to change over because the one piece is undoubtedly smoother flowing.

10-31-2006, 09:06 AM	#35
*snorky* If in doubt, flat out Car: 32J GDFDYEH Fav Mod: Fullerton's Qrack on my car Location: Chicagoland Posts: 3,773 Join Date: Apr 2006 Trader Rating: (23)	i'm going to port my throttle body this weekend just for the hell of it. i will post it up here too if anyone is interested.

10-31-2006, 09:14 AM	#36
Otter Silver Member Car: 06 STI CGM Fav Mod: Stereo Location: Napa, CA Posts: 598 Join Date: Nov 2005 Trader Rating: (7)	Hey BTW, I did this mod a couple of days ago... Best Free Mod Ever! I find it hard to believe though after feeling the throttle body, that there would be no benefit from porting it as well. Did you feel any improvement after going with a deeper porting? BTW, I polished mine to a nice high shine as well, simply b/c I had a polishing head that came with my Dremel grinding kit, and I wanted to try it out. I also used the polishing wheel to polish as deeply as I could down the pipe from all 3 openings. Not sure polishing made any difference, but it'll be pretty if anyone ever looks in there .

10-31-2006, 04:38 PM	#38
Otter Silver Member Car: 06 STI CGM Fav Mod: Stereo Location: Napa, CA Posts: 598 Join Date: Nov 2005 Trader Rating: (7)	I bet they changed it mid-model. They did that with the motor mounts on the 06 too (they chnged from crappy ones to good ones in Jan. production date). as far as the FMIC guys, you should post something up in the Want To Buy forum... Good luck!

10-31-2006, 05:07 PM	#39
boostedrex05 Spec C Club Car: Gt35R STi Fav Mod: Junior Tuned 470whp pump/meth 512whp on C16 Location: 11.60@121 93/meth 1.7 60f Posts: 1,238 Join Date: Dec 2005 Trader Rating: (1)	nice good idea i ported the elbo on my BOV lastnight so it flow's better i just did the one side where the squarish angle was and rounded it with a mini dremil and sanded it smooth. i noticed it stay's in boost better between shift's i cant post pics to show u guy's cuz my computers being gayo but yea take it apart and ull see it's very easy if your really ballzy go all out port match the stock manifold and such just think about thing's to port little stuff and dont go to crazy just make stuff smooth.with round angle's good luck.

11-01-2006, 03:23 PM	#42
maximus Junior STI Driver Fav Mod: One that doesn't cause problems. Location: NJ Posts: 162 Join Date: Jul 2004 Trader Rating: (-1)	I hope to be doing this mod. Great idea BTW. I am doing this in my machine shop with a stationary router. Do you have to go as far as an inch? Is the edge just have a thin lip not like a knife edge? Can't wait for your pics for doing the throttle body Please post pics for throttle body removal and all that stuff.

11-01-2006, 05:35 PM	#44
maximus Junior STI Driver Fav Mod: One that doesn't cause problems. Location: NJ Posts: 162 Join Date: Jul 2004 Trader Rating: (-1)	Cool I'm going to disassemble right now. Hope I can get this done tonight. Let you know how it comes out. Thanks again.