Question about catless Subaru up-pipe

Reply Subscribe

Thread Tools

Search this Thread

12-16-2002, 12:03 PM

WillRX

Registered User

Thread Starter

Join Date: Nov 2002

Location: now on, things are gonna change around here!

Posts: 103

Question about catless Subaru up-pipe

sup guys,

I bought Pat's catless uppipe (no egt bung), and i have a few questions before I install.

1. there's a little surface oxidixation on one mounting surface (turbo). Should i sand it finely or not? Will this affect getting a good seal (i'm using new gaskets btw)?

2. The resistor mod calls for a 2.2k ohm resistor, but what wattage is best? I have heard people using 1/2 and 1 watt.

3. Since i have time, is it worth it to get it jet-hot coated or similar? If yes, can anyone recommend a place to do this?

4. There's a couple of ugly tack welds inside the pipe, should i grind these down to improve airflow, or is that more trouble than its worth?

Thanks in advance for all the good info i'm bound to receive.

WillRX

12-16-2002, 02:46 PM

gpatmac

VIP Member

iTrader: (3)

Join Date: Nov 2002

Location: Lastweek Lane - Watertown, NY

Posts: 10,133

Car Info: 02WRXpseudoSTiWannabeWagon

Will,

I can't answer your questions, but like I said before, if for whatever reason you find you don't like it, or it causes you problems I'll give you your money back.

Pat

12-16-2002, 02:51 PM

IS2Scooby

Pr0n King

iTrader: (3)

Join Date: Nov 2002

Location: The Land of Rocks

Posts: 26,618

Car Info: Turncoat Turbo

Re: Question about catless Subaru up-pipe

Quote:

Originally posted by WillRX
sup guys,

I bought Pat's catless uppipe (no egt bung), and i have a few questions before I install.

1. there's a little surface oxidixation on one mounting surface (turbo). Should i sand it finely or not? Will this affect getting a good seal (i'm using new gaskets btw)?

2. The resistor mod calls for a 2.2k ohm resistor, but what wattage is best? I have heard people using 1/2 and 1 watt.

3. Since i have time, is it worth it to get it jet-hot coated or similar? If yes, can anyone recommend a place to do this?

4. There's a couple of ugly tack welds inside the pipe, should i grind these down to improve airflow, or is that more trouble than its worth?

Thanks in advance for all the good info i'm bound to receive.

WillRX

1. Definitely get that surface as smooth as possible.
2. I used a 2.2k ohm 1/4 or 1/2 watt resistor (can't remember exactly) - both are fine.
3. Better? Yes... Worth it? Arguable.
4. Probably more trouble than it's worth.

Aloooooooooooooooha and enjoy!
Richard...
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote

12-16-2002, 04:05 PM

WillRX

Registered User

Thread Starter

Join Date: Nov 2002

Location: now on, things are gonna change around here!

Posts: 103

thanks richard,

i'm happy with it pat, just want it to be as good as it can be before i put it in!
btw the surface is flat, just dirty

WillRX

12-16-2002, 08:52 PM

sub-sonic

Registered User

iTrader: (2)

Join Date: Nov 2002

Location: aloha state

Posts: 479

i got one

i have x-tra resistor if you want one just stop by at work
wattage wont matter at this time sinced its a sensor.
you may encounter cat efficiency DTC in the future- jusst contact push 2- he may have the cure for that.