cats and exhaust

[Famouspork]

Hi all
I went to my mechanic for a quick exhaust check, my exhaust line is full of little holes, even the muffler itself, and I have the feeling that the cats are clogged like crazy.
Would that cause my car to accelerate poorly in general, but mostly when cold?Because when it's warmed up, it's not so bad, I can live with that.

Also, I'm thinking of having a custom exhaust made for me, and only have a single, straight through muffler at the end, would that hinder the car in any way?

[SoCal LS-L]

All cars accelerate slower before they are warmed up, as engine management only gives the most efficiency after normal operating temp is reached. Also with older engines, the piston rings seal better and give better compression after the heat has expanded the engine parts. Id suspect more of a sensor such as the coolant temp sensor. If your exhaust has holes before the o2 sensors...that will make it run too rich and hurt your acceleration after it has warmed up.

For the exhaust...you want to run just a straight ricer muffler out of the rear instead of the straight to dual setup?

[Famouspork]

pretty much, unless you could give me advise on how to make more power with this car!

[SoCal LS-L]

Theres an interesting FAQ about the SVX that covers that in my signature ("Required reading for SVX owners HERE"). Just scroll up to the top and read all the way down. If youre going to put money into the exhaust, why not do a true dual setup? Aside from forced induction, I think thats the best way to improve acceleration on the SVX's without tearing out the whole interior or swapping differentials.

[Famouspork]

I don't want to put too much money on the exhaust, but I was thinking that a size of 2' 3/4 and a single muffler couldn't be any worse than the single muffler on my (freshly sold)Maxima. Although the exhaust manifolds are not designed the same way, they both still reunite somewhere ...
the only difference between my actual setup on the svx and what I want to do to it, is that the muffler itself is divided , and I want just one outlet.

thanks for the link, but it's not displaying anything for me..

[SoCal LS-L]

Crap, the site must be down.....

It should be pretty straightforward to have a single outlet..... you would just cut out the 1-2 split muffler and put in a regular straight muffler..... the only thing is the rear skirt is set up for dual pipes..... might look a little hokey with just one.