System ONE Combines a unique Quad outlet muffler replacement with Helmholtz resonator to remove drone and a complete ADJUSTABLE SOUND Midpipe with Quick Change Magnaflow rockwool packed Resonator, all in 400 series stainless with full 2.5 inches diameter for best turbo performance, and polished Quad 3 inch tips! Plus made to accept optional High Flow Crosspipe for better turbo spool and hp. System One is made exclusively for Good-Win Racing by Magnaflow, and should not be confused with the lower content non-adjustable and non-Helmholtz Magnaflow branded system.
FEATURES:
Unique Quad Tip Muffler Delete Section with Helmholtz Resonator!
Midpipe with Quick Change Ultra Efficient Magnaflow Resonator.
Fits QUAD TIPS to ALL models of the Fiat 124.
THREE MAIN FEATURES IN DETAIL:
(1) Unique Helmholtz Resonator!. BIG Helmholtz resonator in the muffler delete section gives you all the lovely burble of muffler delete setups while cutting the drone you don't want by over 40db. Most all high end exotic sports cars include a helmholtz chamber built inside the stock muffler to edit the final sound carefully to lower drone, here our Helmholtz is MUCH bigger than stock setups to aggressively knock down drone so we can use far less packing material in the midpipe resonator (and none with straight pipe insert installed).
(2) ADJUSTABLE SOUND Midpipe with Quick Change Resonator! One of the reasons we call it System 'ONE' is that it answers the most popular question we get with our current RoadsterSport choices: should I get the RoadsterSport System with midpipe resonator, or without midpipe resonator? Now you don't have to make that choice because you have BOTH in the box, System ONE box includes a midpipe that has a small removeable section so you can add the included resonator when you want, and remove it when you want. Got a track day weekend or fun canyon cruise coming, add the straight pipe. Got a early work morning when you need to quietly exit the neighborhood, use the resonator. The resonator itself is about a foot long and uses Magnaflow's unique and highly efficient non fiberglass packing that is very efficient at sound suppression by weight. So when you want it wild, use the included straight pipe section for the midpipe. And when you want it mild, use the included Magnaflow resonator. Just single bolt V-clamps either side of the resonator make it easy to swap, see the video for best understanding of this feature.
(3) Fits ALL versions of Fiat 124! Another reason we call it System ONE is it is one system that fits ALL VERSIONS of the Fiat 124. Yes, it fits both Automatic and Manual Transmissions. Yes, it fits all trim packages: Abarth, Classica, Lusso. Yes, everyone gets big Quad Tips with the ONE!
What is also INCLUDED - Magnaflow Crosspipe of 2.25 inch diameter that fits ALL versions of the car using System ONE (does NOT fit other Magnaflow systems), unlike our RoadsterSport brand 2.5 inch Crosspipe this optional Crosspipe is 2.25 inches only so it fits automatic and manual. That Crosspipe is the KEY item to making your turbo come alive! Makes your turbo spool faster and at much lower rpms than stock. Stock crosspipe is terrible for performance, starts at just 2 inches diameter and is pinched down to about 1.7 inches right at the inlet, which keeps your turbo from spooling quickly!