Back to stock 04 still wont rev past 5g

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11-23-2004, 03:18 AM

#16

wrx10404

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Join Date: Dec 2003

Posts: 647

Car Info: 04' wrx

Quote:

Originally Posted by SilverRex04

What should i expect if i go catless without the Utec, I'm sure the computer is not going to like it right. Alot of codes I would think?

Cel, no performance issues. If the cel bothers you put a 2.2kohm resistor(i believe) in the plug for the egt probe, tape it or heatshrink it to keep it dry. I have AP so no need for resistor. I just put some dielectric grease in the plug and heatshrunk it. I also plugged the egt bung in my helix flex. I found my uppie on ebay new for $100 with new gaskets.

Scoobymods.com has great uppie installation intructions. use the ones for the Perrin uppipe.

11-23-2004, 08:45 AM

#17

SilverRex04

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Join Date: Sep 2004

Location: Long Island

Posts: 65

Car Info: 04 Sti swap, VF22 18psi, 255l fule pump,ecutek 93 oct, Full exhaust TXS, Sti ra gears, much more...

thanks alot for the help im going to gut the cat. today at some point and see what happens.

11-23-2004, 02:51 PM

#18

v1rus67

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i heard alot of bad things about gutting out the precat... wouldnt reccomend it, catless upppies arent too much id consider one of those first, and the 2.2k resistor is easy as hell to do, also, if u havent already bought ur utec, consider the accessport, i use that, i love it.