comatosellama Posted October 1, 2018 Share Posted October 1, 2018 Has anyone figured out a man exhaust setup that doesn’t kill tourque but still sounds decent? I’ve currently got uel headers and an N1 weld on. When the silencer is out it sounds great but loses all its grunt, especially with the bigger tires. The silencer makes it sound like crap, but cuts the exit diameter down to about 2 inches and somehow brings all the torque (and mpg) back. Not sure what would work and figured I’d ask USMB before I start throwing money at it Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted October 1, 2018 Share Posted October 1, 2018 what's the diameter of the UEL header exit? I'm no expert, but I have read that dia. changes along the exhaust are bad - you get weird nodes and uneven flow. You want the same dia. all the way thru I think. I love the Stromung twin tip on my WRX FWIW. Link to comment Share on other sites More sharing options...
comatosellama Posted October 1, 2018 Author Share Posted October 1, 2018 30 minutes ago, 1 Lucky Texan said: what's the diameter of the UEL header exit? I'm no expert, but I have read that dia. changes along the exhaust are bad - you get weird nodes and uneven flow. You want the same dia. all the way thru I think. I love the Stromung twin tip on my WRX FWIW. Pretty sure it’s 2.25 out of the header then stock all the way back to a 2.5 inlet N1 welded onto stock axleback pipe. (I know it’s a dirty setup) Link to comment Share on other sites More sharing options...
carfreak85 Posted October 1, 2018 Share Posted October 1, 2018 41 minutes ago, 1 Lucky Texan said: I love the Stromung twin tip on my WRX FWIW. Love, love, LOVE this exhaust on my bugeye! 1 Link to comment Share on other sites More sharing options...
comatosellama Posted October 1, 2018 Author Share Posted October 1, 2018 Forgot to mention that the loud exhaust somehow drops my mpg to about 12???? Anyone know what causes this? Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted October 1, 2018 Share Posted October 1, 2018 CEL on? maybe scan for pending codes anyway Link to comment Share on other sites More sharing options...
comatosellama Posted October 1, 2018 Author Share Posted October 1, 2018 3 hours ago, 1 Lucky Texan said: CEL on? maybe scan for pending codes anyway Yeah it’s going into the shop Friday for a diagnostic for p0420 after I replaced the o2 sensor. I’m thinking it’s the cats, cause when the car afterfires it sounds like it’s contained in the headers. Only pops out the muffler if I’m on the gas while it’s afterfiring Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted October 1, 2018 Share Posted October 1, 2018 P0420 is almost never the cat (though of course, cats can go bad, expecially if there has been some abuse previously like chronic misfiring) good to get everything else checked and sorted before blaming the cat. live data may help a lot here. Link to comment Share on other sites More sharing options...
comatosellama Posted October 1, 2018 Author Share Posted October 1, 2018 Front o2 sensor voltage was around 1.5, rear would spike in between 0.0 and 0.7. 40mph at max operating temp Link to comment Share on other sites More sharing options...
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