hello all,
i am thinking about getting a high-flow cat for my 2001 QC (4.7L auto). it
has 2 pre-cats and then a main right before the muffler. couple of things i
need to find out first:
1. am i going to lose any low-end with a high-flow cat? i just got the
exhaust done with 2 1/2" to flowmaster, dual 2 1/4" out. i am just concerned
about opening it up too much and losing that off-the-line power.
2. should this be installed prior to or after a new TB from Fastman?
(installed 3" Z tube friday night) again, i wanna make sure i balance out
everything as good as possible to maintain low-end power and still get a
kick in the mid to high end.
3. i wanna make sure i dont run into any trouble passing emissions (dallas
county is getting sticky). if i get one of the Carsound cats that Bernd
sells i wont have to run an O2 simm will i? just concerned about making sure
i get one that wont trip any MIL's and has hook-ups for existing whatever.
4. anyone got any dyno results from installing a high-flow? i've seen
numbers range from 5-15 rwhp. just wondering if i should expect a decent
boost from this.
thanks in advance for any help!
-adam
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:04:44 EDT