TakmaN Posted November 3, 2014 Share Posted November 3, 2014 The exhaust setup in my car is currently SPT intake, EL headers, high flow cat DP, and Invidia Q300 exhaust. The exhaust is too loud for my liking, especially when cruising on the highway. My car was tuned with the above mods on it, would I need to have it tuned again if I put on the OEM cat-back exhaust and/or get a Y pipe and put on the OEM mufflers? What would be the best setup to get my current system quieter without requiring another tune? Link to comment Share on other sites More sharing options...
Max Capacity Posted November 3, 2014 Share Posted November 3, 2014 No, your tune will be fine. Seems like a lot of these exhuast are to loud on the highway. My wagon had Invidia catless dp, stock mid pipe, custom 2.5" axle back to magna flow knock off mufflers. it's much better on the highway, just a low rumble on the background, you can talk without yelling. My Spec B has a Invidia catted DP, 3" Pro Tuning Lab mid pipe and mufflers. It was hard to talk in the car on the highway. I have since put the stock mufflers on with only one washer between the flange's on the upper bolt. (Hog-zawst system) It's better but still loud. May try a thinner washer. With the stock mufflers bolted up it's to quiet. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
TakmaN Posted November 3, 2014 Author Share Posted November 3, 2014 Thanks! If I use the stock mufflers and the say TurboXS 3" mid to 2.5" Y pipe, will it give a little bit more of an agressive tone to the stock exhaust? I want it to sound beefy without being too loud (i.e. something between the Invidia and OEM cat-back). Link to comment Share on other sites More sharing options...
BX77 Posted November 4, 2014 Share Posted November 4, 2014 I have a DP, with a TurboXS MP with Stock Cans, and yes it gives it a little more aggressive tone. Link to comment Share on other sites More sharing options...
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