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Forum namePerformance/Engine
Topic subjectCatalytic Converter Bypass Valve?!?
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=5188
5188, Catalytic Converter Bypass Valve?!?
Posted by TotalEclipseDSM, Jul-14-01 04:00 PM
hey i saw an ad in the parts trader that advertised a cat bypass valve. you install it after your header, and i guess one end goes to the cat, and the other goes (i guess nowhere!), but if i did it, i'd route a pipe to hook in to my cat-back. i was wondering if anyone had tried this, or if it would give any power gains whatsoever? thanks a lot!

'98 GS
AEM CAI
AFX WDP
GReddy Header
Apex'i Cat-Back
Koni Adjustable Shocks

Soon:
Skunk2 Front Upper Strut Bar
Neuspeed Rear Upper Strut Bar
RRE Lower Tie Bar
Apex'i S-Afc and S-Itc
Suspension Techniques Sway Bar Set


5189, just knock out the cat's insides and leave it on the car. . .
Posted by Fast420A, Jul-14-01 05:15 PM
No matter what people say, you WILL notice a difference without a cat convertor. The throttle response is better, my gas mileage improved (about 40 extra miles per tank full), The car sounds a lot more powerful }> but the car does smell like a gas guzzling chevy nova V-8. Some people say that their cars quit pulling past 6500rpms, All I know is with my limited mods I have it pulls hard all the way through the red line to the 7200rpm fuel cut and wants to keep on screaming!!! }> }> }> }> }>



KYB AGX Struts
Neuspeed Sport Springs
5 Strut Bars (2 F/U, F/L, R/U, R/L)
Sprint Front Camber Kit
$15 Rear Camber Kit
Ported Intake Manifold
Ported Throttle Body
Custom 2 1/4 inch exhaust
Empty Catalytic Convertor
225/50/16inch Wheels and Tires

5190, so how do you gut the cat!?
Posted by guest, Jul-14-01 07:59 PM
and is this safe,also when you go smog wont you need one on?--------->Peace:>

Never Cause Injury To Your Enemy!!!!
5191, RE: so how do you gut the cat!?
Posted by klipzracer, Jul-14-01 10:58 PM
well i gots the best of both worlds. you can get yours at www.jcwhitney.com


catco hi-flow cat. convert.
100 dollas
legal horsepower
and not loud as f@#k like not running a cat(which i did)

Chris Dishmon

"Fillet Mignon?!?!?! How about a big slab of tube steak for the pretty lady."

chrisdishmon@hotmail.com
http://klipzracer.homestead.com/index.html





5192, If you don't have to worry about emissions like here in Florida . . .
Posted by Fast420A, Jul-15-01 02:05 AM
then you can take it off the car and use a long screw driver or small metal pipe to break the solid block on the inside apart. Then you have to remove all the steel mesh from the inside walls of the cat. After that you can put it back on the car and you will pass the visual inspection if you have smog testing but you will not pass the actual smog testing. It is a lot louder with out the cat but I don't mind, I like it that way. Either way the high flow cat will help but the hollow cat is better (in my opinion)



KYB AGX Struts
Neuspeed Sport Springs
5 Strut Bars (2 F/U, F/L, R/U, R/L)
Sprint Front Camber Kit
$15 Rear Camber Kit
Ported Intake Manifold
Ported Throttle Body
Custom 2 1/4 inch exhaust
Empty Catalytic Convertor
225/50/16inch Wheels and Tires