No Catalytic Converters

Leingod · 06-05-2021, 10:54 AM

Quote:

Originally Posted by djburke87

Well, I think I'm going to look into getting HFCs, just to be compliant and whatnot. Plus it will probably help resale if I ever sell my car. They should also reduce the rasp in my exhaust tone.

So Fast Intentions is the way to go? The only other exhaust mod I have is AAM Resonated Short Tales. Anyone have this axleback and have an HFC they like?

If you have the cash and don't mind the wait time, FI is definately the way to go. I've been running the rhfcs for years without a single issue. I ran them initially with stm short tails. They're now paired with FIs full exhaust. With the short tails, it was loud, but maneagable. You will piss off your neighbors in the morning. With a full exhaust, you can have a conversation in the cabin without yelling.

djburke87 · 06-05-2021, 11:04 AM

Quote:

Originally Posted by Leingod

If you have the cash and don't mind the wait time, FI is definately the way to go. I've been running the rhfcs for years without a single issue. I ran them initially with stm short tails. They're now paired with FIs full exhaust. With the short tails, it was loud, but maneagable. You will piss off your neighbors in the morning. With a full exhaust, you can have a conversation in the cabin without yelling.

I leave before most of my neighbors wake up, so I'm sure most of them don't even set alarm clocks because the just consider my cold start all the alarm they need.

It would be nice to have a conversation once in a while I guess, but getting rid of the rasp is my main concern. I actually put a different axleback on my car 2 days ago that had bigger resonators on it, but the cold start was just as loud. The cruising drone was less though. I like the way the AAM Short Tales look and sound better, though, so I switched back.

If I go with Fast Intentions, should I get the High Flow Cats (HFCs) or the Resonated High Flow Cats (RHFCs). I see on their website they only have the RHFCs for sale, but I heard the used to make non-resonate ones. I'm sure I could find some if I look hard enough.

SteveVQ · 08-12-2021, 03:07 PM

Well FL has no testing sites and no emission requirements for registration....I'm going to do whatever the fuq I want to my car until that changes. Cops don't care at all down here from what I've seen. Never been pulled over and I've had cops sit behind me for like 5 minutes in traffic and I know they could smell my car....because all the prius drivers give me dirty looks.

The FED is corrupt as all hell anyway from top to bottom, I don't give a shiz about their mandates or Orwellian 1984 rules.
"Rules for thee, but not for me"...pfft shove it.

2011 Nismo#91 · 08-13-2021, 05:44 AM

Those who sell or install devices to defeat emission controls can be fined over $4,800 per defeat device, and dealers can be fined over $48,000 per tampered vehicle. In 2019 one diesel performance shop was fined over a million dollars. Though its very rare that anyone actually gets fined ever, a disgruntled costumer can make threats and scare a shop to just stop doing it for awhile.

Spooler · 08-13-2021, 07:58 AM

Quote:

Originally Posted by 2011 Nismo#91

Those who sell or install devices to defeat emission controls can be fined over $4,800 per defeat device, and dealers can be fined over $48,000 per tampered vehicle. In 2019 one diesel performance shop was fined over a million dollars. Though its very rare that anyone actually gets fined ever, a disgruntled costumer can make threats and scare a shop to just stop doing it for awhile.

It has happened to several folks in the Diesel industry. That crap started back in 2007 when particulate filters were introduced. I can remember a couple of companies that went out of business.

Spooler · 08-13-2021, 08:19 AM

Quote:

Originally Posted by SteveVQ

Well FL has no testing sites and no emission requirements for registration....I'm going to do whatever the fuq I want to my car until that changes. Cops don't care at all down here from what I've seen. Never been pulled over and I've had cops sit behind me for like 5 minutes in traffic and I know they could smell my car....because all the prius drivers give me dirty looks.

The FED is corrupt as all hell anyway from top to bottom, I don't give a shiz about their mandates or Orwellian 1984 rules.
"Rules for thee, but not for me"...pfft shove it.

If you are quite about it, you probably won't have any issues. If you are disrespectful, loud, and obnoxious like above, The the EPA will rain hell down on all of us.

SteveVQ · 08-13-2021, 11:24 AM

Quote:

Originally Posted by Spooler

If you are quite about it, you probably won't have any issues. If you are disrespectful, loud, and obnoxious like above, The the EPA will rain hell down on all of us.

Gov starts over stepping its bounds and becomes too authoritarian, freedom loving patriots get loud about it usually.

zeeder · 08-13-2021, 12:23 PM

Steve Dinan was on The Smoking Tire Podcast and he was saying that you don't need to remove the cats!

JARblue · 08-13-2021, 12:31 PM

Unless referring to a racing application, no one should be arguing there is a need to remove the cats. Of course there's no need. There are pros and cons to removing them. Each person's end goal and level of risk aversion is going to determine whether removing the cats is the right decision for them.

Personally, I think test pipes are too loud for certain types of street driving. But I like the smell of gas, so I chose to live with the noise.

abm89 · 08-13-2021, 12:54 PM

My HFC + motodyne combo is honestly perfect. It's hardly loud when driving normally, but it will make noises when i get on the loud pedal. Combined with running E85, hardly any smell.

Spooler · 08-13-2021, 01:16 PM

Quote:

Originally Posted by abm89

My HFC + motodyne combo is honestly perfect. It's hardly loud when driving normally, but it will make noises when i get on the loud pedal. Combined with running E85, hardly any smell.

I hate the smell of raw fuel. E85 makes it so much better. It burns so much cleaner too.

redondoaveb · 08-13-2021, 01:44 PM

Quote:

Originally Posted by JARblue

Unless referring to a racing application, no one should be arguing there is a need to remove the cats. Of course there's no need. There are pros and cons to removing them. Each person's end goal and level of risk aversion is going to determine whether removing the cats is the right decision for them.

Personally, I think test pipes are too loud for certain types of street driving. But I like the smell of gas, so I chose to live with the noise.

No need to remove them but if your car is boosted there would be a need to move them downstream more. My mil spec cats are in the lead pipes

zeeder · 08-13-2021, 02:15 PM

Quote:

Originally Posted by JARblue

Unless referring to a racing application, no one should be arguing there is a need to remove the cats. Of course there's no need. There are pros and cons to removing them. Each person's end goal and level of risk aversion is going to determine whether removing the cats is the right decision for them.

Personally, I think test pipes are too loud for certain types of street driving. But I like the smell of gas, so I chose to live with the noise.

Interesting, I'm the opposite, I can't stand the smell of gas. My old 350, that I bought used, had the cats removed and the smell of gas really got to me sometimes. My current car has resonated HFCs and it's a bit louder than I would prefer but I'm used to it. And, it wasn't worth the cost of new cats to swap them out...lol.

Rusty · 08-13-2021, 06:26 PM

You guys don't know what real gas smells like. Back before the 80's. You could get 98 octane from the local gas station pump. And every car didn't have cats on it. Every heavy truck rolled coal. 2 stroke motorcycles mixed with bean oil. That's a smell that you will never forget.

redondoaveb · 08-13-2021, 07:18 PM

Quote:

Originally Posted by Rusty

You guys don't know what real gas smells like. Back before the 80's. You could get 98 octane from the local gas station pump. And every car didn't have cats on it. Every heavy truck rolled coal. 2 stroke motorcycles mixed with bean oil. That's a smell that you will never forget.

I wish cars burned the castor oil. Loved the smell of Klotz

08-12-2021, 03:07 PM	#18 (permalink)
SteveVQ Base Member Join Date: Feb 2021 Location: Florida Posts: 223 Drives: '23 Camaro 1SS 6MT Rep Power: 52839	Well FL has no testing sites and no emission requirements for registration....I'm going to do whatever the fuq I want to my car until that changes. Cops don't care at all down here from what I've seen. Never been pulled over and I've had cops sit behind me for like 5 minutes in traffic and I know they could smell my car....because all the prius drivers give me dirty looks. The FED is corrupt as all hell anyway from top to bottom, I don't give a shiz about their mandates or Orwellian 1984 rules. "Rules for thee, but not for me"...pfft shove it. __________________ '23 Camaro 1SS 6MT '19 Camaro 1SS 6MT (Totaled by Red Light Runner) '13 370Z Sport/Touring 6MT 328whp (Sold) Last edited by SteveVQ; 08-12-2021 at 03:10 PM.

08-13-2021, 05:44 AM	#19 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,412 Drives: slowly Rep Power: 40570	Those who sell or install devices to defeat emission controls can be fined over $4,800 per defeat device, and dealers can be fined over $48,000 per tampered vehicle. In 2019 one diesel performance shop was fined over a million dollars. Though its very rare that anyone actually gets fined ever, a disgruntled costumer can make threats and scare a shop to just stop doing it for awhile. FL 4Motion likes this. __________________ GTR TT 493Whp/431lbft, Ecutek, Southbend 6puck,Quaife, RPM RollBar 4Point, R888R, JRZ RSPro F(10R/10C) R(10R/6C) 1000f500r inlbs+150inlbs Tender, SPL everywhere.Full Specs

08-13-2021, 12:23 PM	#23 (permalink)
zeeder Enthusiast Member Join Date: Jun 2011 Location: Columbia, MO Age: 48 Posts: 460 Drives: ‘13 370Z ST 6M Rep Power: 3429	Steve Dinan was on The Smoking Tire Podcast and he was saying that you don't need to remove the cats! __________________ Zack FI catback, HFC, and Start Button - Z1 Intake - Nismo S-Tune Spoiler - PasswordJDM V2 Shift Knob

08-13-2021, 12:31 PM	#24 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 44 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684441	Unless referring to a racing application, no one should be arguing there is a need to remove the cats. Of course there's no need. There are pros and cons to removing them. Each person's end goal and level of risk aversion is going to determine whether removing the cats is the right decision for them. Personally, I think test pipes are too loud for certain types of street driving. But I like the smell of gas, so I chose to live with the noise. 2011 Nismo#91, ZontheRocks, redondoaveb and 1 others like this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

08-13-2021, 12:54 PM	#25 (permalink)
abm89 A True Z Fanatic Join Date: Feb 2013 Location: Austin, Texas Posts: 1,390 Drives: 11 370Z, 2x Kawasaki Rep Power: 64764	My HFC + motodyne combo is honestly perfect. It's hardly loud when driving normally, but it will make noises when i get on the loud pedal. Combined with running E85, hardly any smell. FL 4Motion, Spooler, ZontheRocks and 1 others like this. __________________ Complete Parts List: https://github.com/abm89/ztouge-build

08-13-2021, 06:26 PM	#29 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 69 Posts: 35,488 Drives: 2011 Nismo GM 6M Rep Power: 2684438	You guys don't know what real gas smells like. Back before the 80's. You could get 98 octane from the local gas station pump. And every car didn't have cats on it. Every heavy truck rolled coal. 2 stroke motorcycles mixed with bean oil. That's a smell that you will never forget. JARblue, old guy, ZontheRocks and 1 others like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

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