Complete Build (Projected) Please Critique - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Fatal Ty · 06-07-2019, 08:19 PM

Do the build yourself and save yourself a sh*t load of $.

Bfh_american · 06-08-2019, 06:23 AM

Quote:

Originally Posted by TitusSS

The build looks good but I have one comment based upon my experience. I would not get the high flow CATs. I personally blew out my high flow CATs on my GTO with a maggie 1900. One pipe was completely clogged with the blown out catalyst and I'm lucky I did not blow the motor. If you do research on this site you will see that I am not alone with this problem. I know that certain mfgs were trying to make a more durable CAT for boosted applications but I don't think anybody has been successful. On a naturally aspirated motor the CATs do fine but they won't hold up under boost.

That's disconcerting to be honest. I'm just paranoid that I'll constantly fail NJ inspections, even with a tune. Also, I need to hear how catless camaro's sound. I don't want to sound too absurd.

Batmanntexas · 06-08-2019, 08:27 PM

Just punch out the cat, or buy a test pipe (essentially a gutted cat with a straight pipe through it, instead of being a big hollow chamber). I did that for years without issue during inspections. The related codes should be turned off in the tune by the tuner, if he knows what he/she is doing.

bct10985 · 06-08-2019, 08:54 PM

How do they do emissions testing in NJ? In kent county delaware for odb2 vehicles all they do is plug it in. No codes you pass. Like said above the rear O2’s can be set to not throw a code in tune. They have looked under my car with a mirror for cats but my texas speed headers have a catless mid pipe that resembles a cat.

Roader · 06-08-2019, 09:15 PM

I’d have gpi spec out a vvt cam and have Chris at circle d spec you out a converter. I’ve had multiple cams and converters and hose are the two Im Running and sticking with from here on out. Chris took care of me when I changed my stall speed and customer service was second to none for any part vendor, not just converters

Bfh_american · 06-09-2019, 08:08 AM

Quote:

Originally Posted by bct10985

How do they do emissions testing in NJ? In kent county delaware for odb2 vehicles all they do is plug it in. No codes you pass. Like said above the rear O2’s can be set to not throw a code in tune. They have looked under my car with a mirror for cats but my texas speed headers have a catless mid pipe that resembles a cat.

Just gotta pass emissions. They hook it to the OB and if no code. You’re good to go.

Bfh_american · 06-09-2019, 08:10 AM

Quote:

Originally Posted by Roader

I’d have gpi spec out a vvt cam and have Chris at circle d spec you out a converter. I’ve had multiple cams and converters and hose are the two Im Running and sticking with from here on out. Chris took care of me when I changed my stall speed and customer service was second to none for any part vendor, not just converters

Thanks. I reached out to circle D yesterday. Still waiting for a response from them come Monday. I already have a BTR Stage 3 cam with VVT/Dod delete so it’s gonna have to work with that. I’d just hope they can give me an idea of what stall speed I’ll need as I’ll be driving the car every on the roads as well. Nj traffic 🤢

Bfh_american · 06-09-2019, 08:12 AM

Quote:

Originally Posted by Batmanntexas

Just punch out the cat, or buy a test pipe (essentially a gutted cat with a straight pipe through it, instead of being a big hollow chamber). I did that for years without issue during inspections. The related codes should be turned off in the tune by the tuner, if he knows what he/she is doing.

Even better. I wasn’t sure if you good do that honestly. Not familiar with tuning. The only concern I have with going catless is the sound. Supercharged with a stage 3 cam and Borla Catback with no cats? Man that may be overly loud lol

Batmanntexas · 06-09-2019, 06:30 PM

It's not that bad at idle or just cruising around. Stick your foot in it though, all bets are off!!

Bfh_american · 06-10-2019, 02:27 AM

Quote:

Originally Posted by Batmanntexas

It's not that bad at idle or just cruising around. Stick your foot in it though, all bets are off!!

Haha I don't mind that

hesster · 06-10-2019, 06:49 AM

"Supercharged with a stage 3 cam and Borla Catback with no cats? Man that may be overly loud lol"

It's exactly what I have (the ATAK version), and went with no cats due to the plugging up issue. The addition of the Whipple and cam took the ATAK to a whole 'nother level.
Idle is a sweet mean rumble, but it is really loud under throttle. I mean REALLY loud, and can be heard a mile away. NOT daily driver material, lots of back-rap and popping coming off of the throttle, but surprisingly no drone and relatively quiet at steady cruising speeds. Definitely more raw exhaust smell w/o the Cats.
As I said in another post, adding a resonator like a Magnuson greatly reduces the WOT noise level and curbs much of the back-rap, but then makes it rather docile again, so I took off the Magnuson Resonator and put the Borla straight X-Pipe section back in. My solution was to learn to work the throttle to reduce the back-rap noise, and not be stupid in the neighborhood or in traffic.

Bfh_american · 06-10-2019, 07:50 AM

Quote:

Originally Posted by hesster

"Supercharged with a stage 3 cam and Borla Catback with no cats? Man that may be overly loud lol"

It's exactly what I have (the ATAK version), and went with no cats due to the plugging up issue. The addition of the Whipple and cam took the ATAK to a whole 'nother level.
Idle is a sweet mean rumble, but it is really loud under throttle. I mean REALLY loud, and can be heard a mile away. NOT daily driver material, lots of back-rap and popping coming off of the throttle, but surprisingly no drone and relatively quiet at steady cruising speeds. Definitely more raw exhaust smell w/o the Cats.
As I said in another post, adding a resonator like a Magnuson greatly reduces the WOT noise level and curbs much of the back-rap, but then makes it rather docile again, so I took off the Magnuson Resonator and put the Borla straight X-Pipe section back in. My solution was to learn to work the throttle to reduce the back-rap noise, and not be stupid in the neighborhood or in traffic.

My neighbors hate me now with only the Borla ATAK... THING ECHOES off the houses around me. I personally don't care. I was just concerned with droning. I've been reading and speaking to some guys. Getting conflicting stories. The Plugging up issue is really a thing, or is that some bro science that myths are created of. I really don't want to test it out and blow out a cat or worse.... I know I've read your posts a lot and trust your judgement. It just blows my mind that you can melt a cat.

JANNETTYRACING · 06-10-2019, 10:38 AM

Quote:

Originally Posted by Bfh_american

no one?

Like this one.

https://www.facebook.com/jannettyrac...3449870401265/

Bfh_american · 06-10-2019, 06:08 PM

Quote:

Originally Posted by JANNETTYRACING

Like this one.

https://www.facebook.com/jannettyrac...3449870401265/

That is a beautiful sound 😍😍
What equip was used?

06-08-2019, 08:27 PM	#17
Batmanntexas Drives: 2012 Camaro SS (2SS) Join Date: Aug 2012 Location: Stafford, VA Posts: 1,395 View My Garage	Just punch out the cat, or buy a test pipe (essentially a gutted cat with a straight pipe through it, instead of being a big hollow chamber). I did that for years without issue during inspections. The related codes should be turned off in the tune by the tuner, if he knows what he/she is doing. __________________ 745RWHP/634RWTQ on 93 @ 10psi 806/676 on E85 @ 10psi Currently @15-16psi.... COTW 9/8/14

06-08-2019, 08:54 PM	#18
bct10985 Drives: 2010 2SS LS3, 2013 duramax Join Date: Nov 2012 Location: Dover, De Posts: 1,452	How do they do emissions testing in NJ? In kent county delaware for odb2 vehicles all they do is plug it in. No codes you pass. Like said above the rear O2’s can be set to not throw a code in tune. They have looked under my car with a mirror for cats but my texas speed headers have a catless mid pipe that resembles a cat. __________________ ECS Ysi-B, cam, Tsp 2" longtubes, Squash dual pumps, Id1300s, meth, 4L80e, FTI 3600, ZL1 3.73 diff, BMR suspension, 15" conversion, weld rts mt 275 et street R. 9.6@147mph

06-09-2019, 06:30 PM	#23
Batmanntexas Drives: 2012 Camaro SS (2SS) Join Date: Aug 2012 Location: Stafford, VA Posts: 1,395 View My Garage	It's not that bad at idle or just cruising around. Stick your foot in it though, all bets are off!! __________________ 745RWHP/634RWTQ on 93 @ 10psi 806/676 on E85 @ 10psi Currently @15-16psi.... COTW 9/8/14

06-07-2019, 08:19 PM	#15
Fatal Ty Drives: 1992 LS3 Typhoon Join Date: Jul 2017 Location: Michigan Posts: 60	Do the build yourself and save yourself a sh*t load of $.

06-08-2019, 09:15 PM	#19
Roader Drives: Camaro Join Date: Oct 2018 Location: Alabama Posts: 673	I’d have gpi spec out a vvt cam and have Chris at circle d spec you out a converter. I’ve had multiple cams and converters and hose are the two Im Running and sticking with from here on out. Chris took care of me when I changed my stall speed and customer service was second to none for any part vendor, not just converters

06-10-2019, 06:49 AM	#25
hesster Drives: '10 T/A Conv, '10 2SS, '77 SE T/A Join Date: Dec 2015 Location: Michigan Posts: 894 View My Garage	"Supercharged with a stage 3 cam and Borla Catback with no cats? Man that may be overly loud lol" It's exactly what I have (the ATAK version), and went with no cats due to the plugging up issue. The addition of the Whipple and cam took the ATAK to a whole 'nother level. Idle is a sweet mean rumble, but it is really loud under throttle. I mean REALLY loud, and can be heard a mile away. NOT daily driver material, lots of back-rap and popping coming off of the throttle, but surprisingly no drone and relatively quiet at steady cruising speeds. Definitely more raw exhaust smell w/o the Cats. As I said in another post, adding a resonator like a Magnuson greatly reduces the WOT noise level and curbs much of the back-rap, but then makes it rather docile again, so I took off the Magnuson Resonator and put the Borla straight X-Pipe section back in. My solution was to learn to work the throttle to reduce the back-rap noise, and not be stupid in the neighborhood or in traffic.