Hey guys, long story short I have been looking for detailed comparisons between these two exhausts but was unable to find much information at all so I thought I might try to compile as much information as I can.

My experience has been with the MD XYZ w/ resonator and Megan OE-RS exhaust. I have had this setup for about 3 months now and as much as I am a huge fan of Motordyne I was not able to find the discontinued exhaust they make for the sedans so I chose an exhaust that looks similar to stock and is compatible with the MD XYZ. Overall I do like this exhaust very much and as for gains per dollar I thought this would be in competition with the MD and the Stillen exhausts made for our car. Since I did not see any graphs or anything to conclude this was a competitive exhaust on the market, I was hoping any information anyone has on these two would be beneficial to others as well.

Yes, I know without a tune there is very little to compare as well but if anyone has any information, whether it be a stock vs aftermarket comparison graph or a before tune/ after tune graph I think all information would be great.

I did find some information such as many claiming the OE-RS is an 18 gauge steel compared to the stillen and motordyne exhausts being a 16gauge steel, if this information is incorrect please let me know and I will edit this as well.

Thanks again and if anyone has any information I believe this could benefit everyone. Thanks again GDriver!

-Simon

I apologize about putting this in the wrong forum, I thought since this was specific to 1st gen sedan's it was in that section, thank you Mod for placing this in the right section.

-Simon

The Megan is definitely made of thinner gauge steel than the others, but gains between the OE-RS and VQ or Harakiri are negligible. Tony had a huge write up where he describes that he found minimal power after the Y-pipe merge. He tested 3", 4" and a conical diffuser after the Y and found no more than 2.5 hp. HE said the best diameter is 3" after the Y, and it was to keep torque up, exhaust velocity and sound. There's a member on here who made a custom 3" true dual, and it sounds terrible IMO. Near the end of the thread, you will see where I quoted Tony's research and his thoughts on power found on the Y-back.

https://g35driver.com/forums/g35-sed...ust-sedan.html

Thank you for the info re-crue13, I did read that on their site so I went with the XYZ so I guess the main difference becomes basically whether or not the Stillen's y pipe is equal to the XYZ? I do remember the Stillen is a 2.5" dual pipe and many people saying it is a bit quieter than expected. I will be going to a local member during this weekend or next week to go check out his Stillen and do some more comparisons. Looking to go art pipes in the future and I am not sure if I would like the exhaust to get any louder than right now, so i am just looking at other options. Thanks for all the help!

-Simon