Resonators?
#1
Lead Lap
Thread Starter
![Question](https://www.clublexus.com/forums/images/icons/icon5.gif)
Are all three of these resonators or is the top one the CAT?
![](http://i188.photobucket.com/albums/z256/Scpwner/exhaustdrawing.png)
I couldn't find a picture online so i had to draw![Thumb Down](https://www.clublexus.com/forums/images/smilies/thumbsdown.gif)
Oh and for the people that don't know what i am talking about this is a drawing of the exhaust
thanks
Johnathon
![](http://i188.photobucket.com/albums/z256/Scpwner/exhaustdrawing.png)
I couldn't find a picture online so i had to draw
![Thumb Down](https://www.clublexus.com/forums/images/smilies/thumbsdown.gif)
Oh and for the people that don't know what i am talking about this is a drawing of the exhaust
thanks
Johnathon
Last edited by SCpwner; 07-16-07 at 07:57 PM.
#4
Lexus Champion
iTrader: (-1)
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
lower pair in the picture are resonators. top item is the center cat: pretty much one giant tube with stuffing that helps the environment.
there are probably 5-10dB up for grabs with the resonators. there is probably 1-2hp and 3-5dB up for grabs with the center cat.
for cheap sound: cut the resonators.
there are probably 5-10dB up for grabs with the resonators. there is probably 1-2hp and 3-5dB up for grabs with the center cat.
for cheap sound: cut the resonators.
#5
Lead Lap
Thread Starter
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
![Thumb Up](https://www.clublexus.com/forums/images/smilies/thumbsup.gif)
thanks
#6
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I removed the resonators and had the pipes aft of the center cat replaced with 2.25" piping straightened slightly (staying outside of the drivetrain). They lead to hi-flow Magnaflow, polished, stainless steel, offset (OEM shape) and Magnaflow hi-flow chrome tips. I also plan on replacing the forward cats with hi-flowing Maganaflows and either removing the center cat or replacing it with a universal Magnaflow 2-in-1 connector/cat. Everything I have done definitely improved the sound (nice smooth, V8 growl/rumble for 400s) and gave me a real nice bump in hp, but I haven't verified exactly how much; some of the pros around here tell me its probably around a 5-10hp bump up. The resonators are wasted weight and restrict the airflow way too much...kill 'em (and the stock mufflers) and enjoy.
#7
Lead Lap
Thread Starter
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I removed the resonators and had the pipes aft of the center cat replaced with 2.25" piping straightened slightly (staying outside of the drivetrain). They lead to hi-flow Magnaflow, polished, stainless steel, offset (OEM shape) and Magnaflow hi-flow chrome tips. I also plan on replacing the forward cats with hi-flowing Maganaflows and either removing the center cat or replacing it with a universal Magnaflow 2-in-1 connector/cat. Everything I have done definitely improved the sound (nice smooth, V8 growl/rumble for 400s) and gave me a real nice bump in hp, but I haven't verified exactly how much; some of the pros around here tell me its probably around a 5-10hp bump up. The resonators are wasted weight and restrict the airflow way too much...kill 'em (and the stock mufflers) and enjoy.
![Thumb Up](https://www.clublexus.com/forums/images/smilies/thumbsup.gif)
thanks for the help guys.
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