HKS vs Magnaflow xMod exhaust

[Mason]

Yeah I get a bit of drone between like 1700-2200ish rpms, more so if the engine is under load. It's not awful though. It's the same regardless if I have the mufflers on or not.

even the stock exhaust has a drone in this range

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[zrk]

Y'all complaining about the drone need to turn the radio up a little bit, roll the windows down, and enjoy the entry-level sports car for what it is

 

[boosting1bar]

Do you get any drone at all in normal mode between like 1.7k-2.4k rpms with the HKS?

I have the Magnaflow Xmod and I get a good amount of drone in that area, especially under load.

Under load it makes very little more noise than stock, but I wouldn't call it drone. Don't have to raise our voices to talk over it in the car and that's my girlfriend's gold standard of something being too loud or droning lol

 

[JRedMKV]

How much difference in noise did they catted AA dp make? Considering getting one.

I’m not sure because I added the downpipe and exhaust at the same time.

 

[STV3]

I’m not sure because I added the downpipe and exhaust at the same time.

damn ok. would you say the car sounds mostly stock in Normal mode other then that 2k rpm area?

 

[JRedMKV]

damn ok. would you say the car sounds mostly stock in Normal mode other then that 2k rpm area?

Yeah I’d say so. It’s pretty quiet in normal mode.

 

[RedMK5]

I have the HKS Super Turbo (single muffler one) part number HKS-31029-AT003 and AA catted downpipe. Normal mode it runs a little louder than stock and sport mode is deep tone and sound pretty good imo. No drones either. And the exhaust tips look good too.

 

[Last Lemming]

Hey guys just found this thread and reviving it. I have the AA DO and just installed the Xmod - all mufflers with 3” inlet pipe. What inlet pipe did you go with. Trying to tone down the 2000 rpm drone/vibration.
Thanks.

 

[Yabai]

Hey guys just found this thread and reviving it. I have the AA DO and just installed the Xmod - all mufflers with 3” inlet pipe. What inlet pipe did you go with. Trying to tone down the 2000 rpm drone/vibration.
Thanks.

I have an AA dp, 3.5” inlet, left side muffled right side straight. I think adding the muffler to the right side may help with drone. Haven’t tried it yet. I like the current setup now.

 

[JRedMKV]

I have an AA dp, 3.5” inlet, left side muffled right side straight. I think adding the muffler to the right side may help with drone. Haven’t tried it yet. I like the current setup now.

You know I’ve had my Magnaflow for a while now and forgot all about trying to straight pipe one side! After hearing this I’ll have to do it!

 

[Yabai]

You know I’ve had my Magnaflow for a while now and forgot all about trying to straight pipe one side! After hearing this I’ll have to do it!

do you have an aftermarket dp? Could you post a sound clip of your setup?

 

[Last Lemming]

I will be adding a 12” resonator on the 3” pipe after the DP to see if I can eliminate the resonance between 1500 and 2000 rpm. I’ll report back when done. It’ll be a tight fit but it looks like it might work.

 

[Last Lemming]

Ok. I installed a 4” dia 1’ long 3” inlet on the 3” MF mid pipe. It’s a tight fit leaving only about 1/4 clearance between the heat shielding and the pipe. I say it reduces the drone between 1500 and 2000 rpm about 50% or so. Definitely reduces some of the annoyance. Quiets the overall sound just a tad, but noticed it also quieted start up a bit too.

here is a pick prior to the install back from the fabricator.

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