![]() |
#1 |
![]() Join Date: Apr 2004
Location: Atlanta, GA
Posts: 2,169
|
![]() Putting headers on and looking at some cats.. any comments on these. Also going to 3.73 gears.
http://www.rpmoutlet.com/powercat.htm http://www.performance-curve.com/ind...&ProdID=118 1 http://store.summitracing.com/egnsea...0&autoview=sku Thanks
__________________
Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold |
![]() |
![]() |
![]() |
#2 |
![]() Join Date: Aug 2006
Location: Texas
Posts: 518
|
![]()
They all look decent but the difficult thing to evaluate is how well they cut emissons. No aftermarket cat is as effective as the factory version. I have the overpriced RT's and have had difficulty passing emissions in Texas. Can pass with a prom change but it is difficult. If you ask the reps for the various brands about emissions they will tell you their cat works. So you pay your money and you take your chances.
|
![]() |
![]() |
![]() |
#3 |
![]() Join Date: Apr 2004
Location: Atlanta, GA
Posts: 2,169
|
![]()
Thanks that is the type of info I am looking for...I have found out the RTs flow around 620..and the MF about 595..
__________________
Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold |
![]() |
![]() |
![]() |
#4 |
Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,843
|
![]()
I used DynaTech Powercats (Jegs) on my old L98 setup and had the same situation, had to go back to original chip to pass emmissions.
Hans ![]() |
![]() |
![]() |
![]() |
#5 | |
![]() Join Date: Jul 2005
Location: Auburn, Washington
Posts: 585
|
![]() Quote:
![]() |
|
![]() |
![]() |
![]() |
#6 | |
Join Date: May 2005
Location: Leesburg, VA
Posts: 2,704
|
![]() Quote:
On many OBD-II vehicles, aftermarket high-flow cats will set off the check engine light or require O2 simulators, because the cat does a worse job of catalyzing and the post-cat O2 sensor can readily detect it. Plus, bullet cats on long-tube headers move the cats further down the exhaust stream, so they will take longer to heat up and start working. But most of us just need "just enough" catalyst to pass state emissions requirements (which are much less strict than new-car emissions requirements), and want as much power as possible while staying right on the edge of passing. |
|
![]() |
![]() |
![]() |
|
|