goose415

what makes the 13b go brap brap brap... lol i know its a noob question but i wanna know what makes it do that and is it performance oriented because i hear some sound like that and others (like mine) sound smother... i love the brap lol thanks guys.

Aaron Cake

iTrader: (1)

High overlap porting such as huge "street" ports, bridgeports, j-ports or peripheral ports.

goose415

thank you... i wanna rebuild my N/A S4 and i wanna port it but dont want to go overboard is a huge street port be worth it ir would a mild bridge port be good enough i dont want to go to big cuz for now it needs to be street legal

Aaron Cake

iTrader: (1)

How much power are you looking to get?

In most cases, huge intake ports on the 6 port engines aren't going to help you a lot on the street. They will make high peak power up in the rev range. A lot can be done with a stock ported engine (don't pull the engine apart just to port it), and a conservative street port is a nice way to go.

goose415

well my plan is to tune it to auto X and drift a little bit and it needs a rebuild anyway and i figured since im replacing the seals i might as well port it.... oh and it smokes when the engine rpm slows down and when i shift it puffs a little bit.... i have no cats and generic mufflers its a N/A S4, i have been told that it might be oil rings or the oil injectors get stuck open or the metering pump is pumping to much oil... and i know for you to get a full understanding of whats going on you have to see it i could post a video if that would help. any ideas? its a light tinted blue smoke... sometimes its really blue though.

Aaron Cake

iTrader: (1)

Probably worn oil o-rings. Since it is apart, then a good street port (use a known template like the one available from Mazdatrix/RB) is a good way to go.