Jun 16, 2017 · This guide will take you step-by-step on the mods necessary to build a 500hp 135i, 335i or 535i. And we are going to do it for less than $1,500! First, Let’s Talk Spark Plugs… Horsepower is created from combustion. So to make more horsepower you need more combustion. Oct 02, 2020 · In comes the straight pipe exhaust system, which is the easiest way to make your car sound louder. In essence, a straight pipe exhaust is an exhaust system that involves joining a pipe directly from the exhaust headers and taking it straight to the end tip without the involvement of a catalytic converter or a muffler at any point. Straight pipe ... To get full-access, you need to register for a FREE account. As a registered member, you'll be able to: Participate in all Tacoma discussion topics; ... Could someone tell me what size exhaust tip needed for the 2016 pipe. How about some pics as well for some ideas. THANKS in advance ! TWLRSC, Nov 26, 2015 #1. Nov 27, 2015 at 7:57 AM #2 #2.