Hi Over the winter I want to add a high flo cats and a catback system on my car its a auto with just a cai on it. Would it be better to go for headers with that or just do high flos and cat back? How much HP can i expect. Im trying to add as much HP as i can without force injection. Im also going to add a TB and plenum and pulleys . If theres anything else let me know. How much would i be looking at....
Thanks Buck
Thanks Buck