Sounds good... i made a video on my page on how to bypass that 4k rev limiter to 6500, it will sound amazing once you rev pass 4k.. i have a 2016 2SS myself
Do you remember what size the pipe was on the secondary cats? I live in CA and i'm gonna cut mine out, but i'm gonna weld flanges to them and the exhaust pipe so i can bolt up the cats again when it's time to smog my camaro XD. also did it actually get any louder? mine has a muffler delete, talk about snap crackle pop lol.
i did same thing on my 21 ss, didn't truly notice any sound diffuser except better throttle response and more drone at lower RPM lol, have you thought about adding an extra x pipe before the x section
For the 5th gen SS, I believe it goes from either a 2.75-2.5” taper at the last flange after the 2nd cats. I’m pretty sure they used 2.5” piping on my downpipes in place of the 2nd cat deletes. 2.75” would throw off the flow a teeny bit from being a bit larger in that catless pipe section, but nothing even remotely troublesome whatsoever. I actually wanted to go with shorty headers that bolt onto the stock downpipes, but I was gonna get custom HFC’d full 3” downpipes. And then from there, I’d build a full 3” catback with an h-pipe maybe. Straight-through mufflers or a muffler delete on the stock catback is already as restrictive-removing on the exhaust system as it is. The automatics have an extra suitcase resonator, while the manual ones don’t have any resonators. I actually ended up getting two 12” resonators welded in, to kill off some more overall around rasp, drone, and loudness.
Nice video I have a 2020 ss with a borla atak catback system. I have a question for you did the secondary cat delete throw a check engine light? Thanks and keep up the great work.
Hey! It did not at all. Just be careful to do a good job welding.. any pin holes in the welds could cause a CEL. Also remove the 02 sesor before welding. Ive seen some say weld splatter will get on it and ruin it causing a CEL.
Does it still pop when it the exhaust gets warm? My 18 SS 1LE will only pop for the first few minutes of driving and then it's gone. Did it make the tone any deeper or is it just louder and a little more raspy? I'm considering having this done soon. The shop I have my work done at said it would be $80 per cat.
Just had mine done today thanks to your video! Sounds great!
Sounds good... i made a video on my page on how to bypass that 4k rev limiter to 6500, it will sound amazing once you rev pass 4k.. i have a 2016 2SS myself
Do you remember what size the pipe was on the secondary cats? I live in CA and i'm gonna cut mine out, but i'm gonna weld flanges to them and the exhaust pipe so i can bolt up the cats again when it's time to smog my camaro XD. also did it actually get any louder? mine has a muffler delete, talk about snap crackle pop lol.
It sounds like it didn't make a difference with leaving them in and just pull the npp fuse to keep the flaps open.. Yours sounds really good
Did your Camaros check engine light pop up or not bc mine did when I did this.
i did same thing on my 21 ss, didn't truly notice any sound diffuser except better throttle response and more drone at lower RPM lol, have you thought about adding an extra x pipe before the x section
I love the new car man. I really love the 2020 SS. I will have one soon!
Thanks!!! Im loving it so far!
It sounds good bro
Sounds great.😎👍👍
Got any like rattle or weird vibrating drone ? Or just normal louder engine noise?
Whats size pipe did your shop use, 2.5 or 2.75? Had mine secondary cats removed and my shop used 2.5
For the 5th gen SS, I believe it goes from either a 2.75-2.5” taper at the last flange after the 2nd cats. I’m pretty sure they used 2.5” piping on my downpipes in place of the 2nd cat deletes. 2.75” would throw off the flow a teeny bit from being a bit larger in that catless pipe section, but nothing even remotely troublesome whatsoever.
I actually wanted to go with shorty headers that bolt onto the stock downpipes, but I was gonna get custom HFC’d full 3” downpipes. And then from there, I’d build a full 3” catback with an h-pipe maybe.
Straight-through mufflers or a muffler delete on the stock catback is already as restrictive-removing on the exhaust system as it is. The automatics have an extra suitcase resonator, while the manual ones don’t have any resonators. I actually ended up getting two 12” resonators welded in, to kill off some more overall around rasp, drone, and loudness.
Does this void any warranty??
No domestic car has secondary catts, none, unless you remove only one, the left or right.
Nice video I have a 2020 ss with a borla atak catback system. I have a question for you did the secondary cat delete throw a check engine light? Thanks and keep up the great work.
Hey! It did not at all. Just be careful to do a good job welding.. any pin holes in the welds could cause a CEL. Also remove the 02 sesor before welding. Ive seen some say weld splatter will get on it and ruin it causing a CEL.
Leaman Griffin ok thanks for the information
Did you ever get a check engine light?
Does this mode makes your car smell stink?
No its only one set of cats
Do you know how much the cats weight
And to op, the word is not bafore its before
Is there any drone?
I order a x pipe so i can get a the resonator and secondary cat deleted and leave the npp
Did you get a CEL?
Does it still pop when it the exhaust gets warm? My 18 SS 1LE will only pop for the first few minutes of driving and then it's gone. Did it make the tone any deeper or is it just louder and a little more raspy? I'm considering having this done soon. The shop I have my work done at said it would be $80 per cat.
juts turn on the active rev match, put on the second gear and have fun with pops even when the car is cold
Get u a exhaust with those cats off will sound better
I’m new to cars so when you do a secondary cat delete they take both of?
Yeah bro
Sounds like a tin can noise without the secondary cats, lost its deep note.
Those are not Catts, theyre resonators.
Lmao manufacture recommended l
Rattle and drone no thanks
Can you pass smog with deleting secondary cats? I'm in Cali
best advice.....just get out of cali lol