Ok I have my 7 in at clean and fast here in raleigh to get some work done. It turns out my boost problem is bad turbos. Bummer. I am also getting a Dp and cat back installed too. I have a stock cat I bought as well. (I bought this because the previous owner had his system welded on at meinake of all places....I don't even wanna talk about that). So I hear that keeping the stock cat is best, but Jerry (the owner) was advising me to upgrade to the high flow cat and apexi intakes too. I thought it was a consensus that doing this without an upgraded ecu was a bad thing. I have and auto. Theses would be my only mods. I was thinking I may go with the high flow cat, but maybe hold off on the intake since I ran into having to buy new turbos...or should I just throw on that stock cat, DP, and cat back and not mess with the other stuff. It's not that I don't trust Jerry, I have only read excellent things about him on here, I just wanna be sure before I spend the money. Thanks guys.

 

You should be ok with installing a hi-flo cat with a catback and dp. However, I would leave the intake alone, just keep it stock.

The main thing is keeping an eye on your boost levels. As long as you are sticking around stock boost levels, you'll be just fine.

Just my $.02, but good luck!

 

Just make sure you get a boost gauge, and don't get a intake. If you get the intake you might have some big boost spikes.

 

you more likely to get boost spikes with exhaust modification than intake