Quote:
Originally Posted by db2022cs
I would go catless if my state didn't do visual emission inspections. If I would go that route you suggested, that would be something I could do myself. I just am after more of the sound which is what the headers would give me.
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Just as a side note, catless exhausts stink to high heaven when using 93 or non-ethanol fuel, and are mega loud... my car has Kooks headers with green cats, stock suitcase exhaust, and it's
much louder than stock at any amount of throttle, my cold starts can be heard from half a mile. Modern high flow cats do not impede power generation either, and certainly not at these down to earth power leves.
For these reasons (and also not to be a dick to everyone else, uselessly annoying people like those coal rollers whose assholery also contributes to stupid new regulations), I would not go catless even though my county does no inspections.
Quote:
Originally Posted by db2022cs
Kooks headers are great headers are great, and that is a huge cost. If I could find something for half that cost and get them ceramic coated, I would maybe be happier. What is the difference between the green cats and high flow cats? Are the green cats just what Kooks calls the high flow cats? I could knock off another $270 and install flex fuel myself but I think they have a 12000 mile 1 year warranty if they install everything. What are the thoughts here? TIA.
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I think "green cats" is a product moniker and these are actually high capacity, high flow cats. If you go with these headers, make sure you get the newer gen 2 cats rated for 1000+ hp, I have the older gen 1 that is rated for 425 crank hp per bank (850 total), and I'm near the top edge of their allowed range.
Kooks headers may be expensive, but they have excellent quality and perfect fitment. Mine are ceramic coated and have literally looked brand new in the engine bay since 2021. The coating manages their heat pretty well, they don't get very hot, which helps with my 2SS front end that has less airflow than the ZL1. I never had any heat issues.