How To Fit High Flow Catalytic Converters | 350Z Restoration pt.5

[@RoadandRacetv]

I got these high flow cats from www.torqen.uk

[@lordzed83]

Went with straight decats and swaping for mot. Seen stock cats go for as much as high flows so started thinking sell them and get headers + hfc's on and sorted :)

[@zoob4371]

starting from 4:04, what song was used?

[@benripley7596]

Honestly your videos could be a standard TV programme the production and editing is so clean.

[@RoadandRacetv]

Big thanks Ben.

[@vKurz]

Kiss ass

[@men8ptb]

Wow, I owned this car for 7 years until 2013. Always had a great time with it and seem to have got rid of it before some of the major issues. Surprised to see it on here whilst browsing your Porsche videos. Glad to see its getting some love. The crap tyres and cyclops were not me.

[@RoadandRacetv]

Cool. Always interesting to hear from a previous owner. Yeah the previous owner didn’t spend any money on it. Did you have much done during your ownership?

[@men8ptb]

@@RoadandRacetv no upgrades just routine maintenance. As you noted its a stock car with no crazy mods. This was my daily driver and my insurance was already high enough! Never tracked it. Its funny, just a few days before i found your channel I thought 'I wonder what happened to my old Nissan'. Found some mot history site and saw it was still going. Then researching the 986S i landed on your excellent channel and there it was. A few weeks after I bought it mid 2007 the clutch failed and I had that done just before the warranty expired. Apparently there was some issue with the flywheel so that got done as well. Was at the dealership for about 8 weeks whilst that got resolved. Other than that I had 6-7 years of reliable, low expense motoring. The cyclops thing was in when I bought it. You may also have noticed a switch under the steering wheel to the right where the previous owner appeared to have had some air horns wired up. If that switch was set wrong it would disable the standard horn and fail the mot. Those silver vent covers were coming off when I had it (glue worked but not forever) and the boot lift struts occasionally exhibited the problem you made a video about (but only on cold days). Family meant I had to get something more practical so traded it in for a people carrier. A sad day. Missed that V6 growl ever since. Now in a position where I'm looking for a fun car in addition to my daily so who knows I might own one again soon. This or a 986S anyway.

[@MyBlueZed]

Look at you with your fancy hoist working while standing upright! 🤣😘 I’ve taken a different upgrade route: hit a kangaroo = new bumper, left front fender & inner guard. Motorcyclist hits my driver side at traffic lights = another new bumper, right front fender & inner guard. 🤷🏼

[@04srt4champ]

Finally. One of my favorite car guys, the editing information, and chillnes make this one of my favourite subscriptions, wish you pumped out videos every week though.

[@RoadandRacetv]

Much appreciated!

[@samihamady6393]

Polishing your exhaust tips will DEFINITELY improve your exhaust note DRAMATICALLY, I use Autosol or Never-dull

[@Justin-hz8bh]

Are you serious? No way polishing makes it sound different... right?

[@s15melb]

@@Justin-hz8bh if it actually removes mass it might. For example heatwrapping your exhaust will change its sound.

[@theayatollahofrockandrollah]

I really like that shot where there are 3 of you working under the car at the same time lol

[@schluesselbundrd]

Loved the video and the result, especially soundwise, is absolutely wonderful in my opinion. Excited about if you feel performance changes Take care and best wishes

[@RoadandRacetv]

Yeah, the exhaust sound is quiote a bit better now. Really nice to hear it. Will be taking teh car on track in a few weks so will see how she handles and sounds.

[@Jeremy_Hill_2020]

I might be getting an 08 corolla soon (current have a 96 corolla with headers, intake, cat delete, 11.5 inch long glasspack resonator, & a N1 muffler on 2.5" piping all the way) & been thinking about deleting both cats on it or just have a single high flow cat, intake, 16 inch long glasspack resonator, & a Flowmaster Super 10 on 2.5 inch piping all the way (maybe 2.25 inch all the way)

[@CarFocused]

One Neil is enough - we don’t need two more!! Great video mate, must admit mine feels better with the high flow cat / downpipe.

[@RoadandRacetv]

Thanks Gary, not had a chance to give her a full blast yet but will soon.

[@autoperformance503]

@@RoadandRacetv what 15 hp with high flow cats on 350z , I’m doing test pipes on my 350z

[@GeorgeGabor19]

2:30 so glad in Ontario, Canada we don't have to deal with emission test anymore .

[@mrkloss8379]

Unfortunately Cops will pull u over and still give u a ticket for it

[@trendydwarf3747]

So great that you keep the playlistst updated

[@mkalamo]

Slick editing, loved the 3 of YOU working on car! no anti seize at O2 sensor?

[@tracktimevideos5164]

Good video and a nice bit of fancy editing/production. More please. 👍

[@RoadandRacetv]

Thanks mate. I don’t often do fancy editing but when I do it has to be the three way split-screen 😁

[@tracktimevideos5164]

@@RoadandRacetv it looks good as do your mods. If you ever want to do an underbody resto of my Scooby let me know 😁

[@MohVlogz]

You didn't mention if you had power gains... ???

[@msitpro1]

Very very interested in what that HC ppm and CO% results from the MOT were. Usually you'd have the emissions test results sheet with the main MOT sheet.

[@koachs77]

Good time replace O2 sensors , and use some anti seize , nickel stuff works well , lots more money , but , less work in the long run

[@johnhughes1615]

Great video! I started watching you for advise on Boxster issues. The new garage looks great. The full tear down style of this new project is cool to watch. Maybe I should pickup a 350z???

[@daveyofyeshua]

For the £££ can't beat a 350z for looks, performance, noise and reliability.

[@RoadandRacetv]

Thanks John. Yes, get one, you won’t regret it!

[@Wasabi_Tears]

Do it! They're so fun to drive when you put your foot down, but easy when tootling around town. Plus, they're rising in price.

[@djsthemetereman]

So it's worth it to make the change

[@insidebyte8561]

I'm still waiting for you to release that track, I need it in my life so bad haha

[@NotaKamalaFan]

You must live at the beach with all the rust. I'm 90 miles away from the Pacific Ocean and our cars don't rust anything like that. It did take me 3/4 of a can of PB Blaster to get my whole exhaust off though.

[@Ssengel69]

Should have done the full exhaust while you are under there if it were up to me. Good video!

[@fossilfish786]

Been looking at these 350z, so many crappy ones for sale. Hopefully when you sell let us know. I'm sure on of us will buy it. Kindest regards

[@insidebyte8561]

3:38, I need that song in my playlisttttttttt, also always look forward to your vide :D

[@brandondickie3456]

I’ve been planning out how I want to do my exhaust set up for my 2015 CR-V (2015-2016 had the 2.4L k24w1 and I feel like it’s somewhat a better engine or like, a better engine option for the crvs, for the 2017 model year and onwards they use the 1.5L turbo, and compared to the original 2.4L k24w1, the 1.5L turbo makes a whopping FIVE more horsepower than the 2.4L. That’s unbelievable, they’ve really come a long way. Anyways, I’m thinking of, Stock cylinder head -> Custom built (with attention to detail and the help of my uncle who’s an experienced welder, many people have said he knows how to weld anything (figuratively)) catless, straight pipe downpipe, I’ll have to figure out the O2 sensor situation that would happen because of that -> 3” diameter piping from the downpipe to -> high flow 3” In/Out catalytic converter -> 3” diameter piping from HF catalytic converter to -> 3” In/Out straight through resonator, or maybe two of them -> 3” diameter piping from resonator(s) to -> single exit exhaust because the way the underbody of the 2015 crv is, I don’t think there’s a logical or possible way of having dual exit, ESPECIALLY not TRUE dual exhaust -> 3” In/Out Flowmaster 953047 super 40 series muffler. With having all of that increased pipe diameter and stuff, I’m worried I won’t have enough back pressure or something and my car might mess up, but if I just had that set up, and then maybe swapped stuff here and there wherever improvements can be made, it might be a pretty decent exhaust. But I don’t know. I’m trying to see how far I can get as a college kid. I’ve barely done anything to it so far. I have a cold air intake that I’ve routed, using a flexible plastic hose, down into my front bumper and the filter is right inside the opening of my driver side fog light housing. I removed my fog lights, I still have them, but anyways the air is going through the opened fog light housing hole thing, and going straight into the cone air filter. Then I have it gold heat wrapped (I don’t show it off to anyone so it doesn’t really act as a cosmetic thing in my case) and it runs from there up through where the stock air intake resonator, filter box, pipe, etc used to be, and runs into the throttle body, and I put a throttle body spacer between the TB and the intake manifold. Ooo a spacer, wow so much horsepower (no), and then on my exhaust I have the flowmaster. And I have vents put inside of my hood, originally it was because the AEM intake that I ‘altered’ to make my current intake was a short Ram, positioned inside of the engine bay, sucking up heat. So I figured, “I need to find a way to extract heat”. They still serve a purpose though I guess. I feel a little better seeing the heat waves rise out of the vents when it’s cold, only seeing waves above the vents meaning most of the escaping heat is probably coming out of the vents, other than that, there’s no ‘mods’. My headass spray painted my calipers red, and I’m thinking of how to get the paint off if possible because I think I look like a ricer dumbass because of them, I’m also doing some thinking about getting new wheels, which I think I’d get darkish bronze, maybe black lip, 19” or 20” wheels but I’m waiting until it’s time for me to get new tires put on my car so I’ll maybe have enough thought and decision making and money at that point, I’m thinking a price range of maybe $275 or more, or $300 or more per wheel, I want to get something a little more expensive than my stock 18” touring wheels, my crv trim is a touring btw, but mostly something that won’t implode and break going down the interstate, because then I’ll be modding my car in the afterlife, anyways yeah. Here is my essay.

[@brandondickie3456]

The car’s color is urban titanium metallic. I think it’s kind of a weird ass color and I’m not sure what even goes with it. It’s not like nardo grey or white or black, or gunmetal grey, etc, it’s like gunmetal grey’s crackhead cousin that gunmetal grey doesn’t talk to anymore. I figured a dark bronze might work, I looked at a few styles of black wheels and it was about as hideous as I am. I’m having a tough time figuring out the best color wheel to go with that car paint color.

[@Satchjs1200]

Hi emission value ? Original 273g/km High flow cats value?

[@stevieh6]

Did it make more power?

[@silviutudorescu8114]

Just get the full exhaust line by Nismo R tune, it’s around 1800$ the diameter is bigger then the stock one

[@Aeneas137]

I'm extremely surprised that you didn't replace the O2 sensor. yes they are expensive but they also fail quite easily.

[@TheCarTakerGarage]

Was about to comment the same :) .Putting on new catalytic converters,,and not replacing the O2 sensors,is quite " silly" for sure...Greetings from Norway ,Stefan :)

[@LB83.]

Real question is will they still pass mot emissions

[@1234eeras]

Song name throughout 3-6 mins? Great video as always!

[@Justin-hz8bh]

But did you notice any more power?

[@itmightbeoctober8789]

Considering getting 1 since my cats clogged & cataclean isn’t working

[@morris2755]

I understood rules came in some time ago, for MOT, that post 2001 cars were not allowed non oe cats, or at least non type approved. did you have any trouble there or are these ones covered? did you have to provide any sort of certification?

[@RoadandRacetv]

Nope!

[@richardsurey6167]

Did it throw the engine management light?

[@grahamepigney8565]

Do these upgrades and the remap impact the cost of the insurance? Shoddy manufacturing putting mild steel cats on a high end car. More money in the pockets of the dealer/manufacturer I guess.

[@RoadandRacetv]

Like any car mod, probably, but check with your insurer

[@grahamepigney8565]

@@RoadandRacetv what did your insurer say about the upgrades and remap?

[@lshsparks1155]

In fairness i wouldn't say the orignal cats are shoddily made far from it they have performed reliably for 15+ yrs underneath a car in a country with a fairly damp climate for most of the year and gritted winter roads. Yes the orginals look in a bit of a state now the thin heat shields rust badly but the Cats underneath just have surface corrosion and are still solid (probably also pass a uk MOT from cold :-) ) . The 350z was competitively priced at launch and the Z ethos was always an affordable spots coupe every manufacturer has to balance cost spec decisions to have a viable product. Anyway i doubt the stock exhaust was a cheap item back in tbe day... dual manifolds, dual cats, a Y flexi pipe, mid box and large rear back box. Why do i say all this i own one....Do you work in insurance Grahame? Your question answered before your subsequent reply 😉 all the best. Good work there RR that garage is the envy of many folks i am sure 👍.

[@Matt.4877]

Great video as always

[@RoadandRacetv]

Thanks again!

[@darrenburchmore]

I'm running these cats on mine. Very well made and a great price

[@christianhodges685]

Did you get a check engine light using them? Or have issues getting the car inspected?

[@fuxionxc6545]

Do you need to replace the heat shield?

[@TomRxtroWav397]

Oo you will enjoy V6 rumbles

[@hakimrahman85]

Hi, what’s the socket size for O2 sensors? 18mm or 22mm ?

[@yairabarca2138]

Do these cats work on left hand drive z?

[@BrunerTuner]

Someone punched out the cats on my Z before I got my car..captain planet is going to have to kick someone in the balls!

[@BrunoSantos-jw3er]

Next full cat-back? Invidia for example :D

[@RoadandRacetv]

Yeah, that's the plan. The Invidia is nice but very expensive! May look at other options

[@MyBlueZed]

Invidia certainly allowed my Zed to breathe better and the bum dyno definitely noticed. I was hoping for a better sound though. It was better than stock but not as nice as the Fabspeed exhaust on my 986 Boxster.

[@danny5412]

Will they fit on maxima

[@alexoliver9201]

Any new content on the horizon? Need my 350z fix!

[@Turtlefarm]

Anyone know the part name of the white brace thing? Mine is rusted and I Wana replace it

[@RoadandRacetv]

Ultra Racing W Brace

[@Mike-xn1bh]

What song is playing in the background?

[@davidblackwell7958]

Was your car the one that Top Gear raced on the beach and drove through the sea ?

[@RoadandRacetv]

Probably.

[@willmoore5550]

Stillen Y pipe is the best.

[@crashwebb4715]

The large amount of additional spacing between the downstream o2 sensors and the piping will not only get you in trouble but will also trick your ECU into thinking the engine is producing better emissions than it actually is, which could prevent it from sensing problems which it would have with the OEM exhaust. I wouldn't trust this exhaust company

[@PURGE-3000]

It’s done like that so you won’t have to MOD the ECM because of the extra flow of gases it’ll pass the 1 volt limit and give you the check engine light even though motor is good.

[@thewingedangel5520]

Can the 350z high flow cats fit a g35 sedan 08?

[@r.cbikefloyd5390]

Did you find out if this works on a vhr this I think is for the DE

[@thewingedangel5520]

@@r.cbikefloyd5390 I didn’t find out . Ima just buy test pipes off Z1 Motorsports .

[@r.cbikefloyd5390]

@@thewingedangel5520 try concept performance

[@Fadz-zg6bt]

Do high flow cats smell more like gas?

[@RoadandRacetv]

dont think so

[@gogutzy]

if you need to heat them up for them to work best, then you're better off reaching out to Koenigsegg for one of their rocket cats.

[@Ulove619]

So did it pass smog?

[@RoadandRacetv]

All in the video mate 👍🏻

[@vilimyllykangas1027]

Do you still have your E61 bmw?

[@RoadandRacetv]

yes i do. its my daily drive.

[@koachs77]

Would have been a good time to cut out that first muffler , less weight , more sound ,

[@innotime4706]

Can’t do this in CA. 😭😭😭😭

[@mdev8846]

Why not ?.

[@Sagittarius-88]

@@mdev8846 California has some of the strictest emissions regulations in the United States. There's a lot of aftermarket parts out there that are deemed "Not legal in California". Tuners and exhaust parts are usually found on that list. The California EPA nazis love sucking the fun out of everything.

[@alfredoibarra7958]

My 02 extenders are still throwing emission codes. Any tips ?

[@RoadandRacetv]

They can be mapped out. I got mine done at Horsham Dev when it was tuned.

[@freedom6919741]

No they will melt under boost.

[@zoob4371]

the car doesnt have turbos

[@bihgolphatdictergud746]

Manufacturers are forced to meet stricter guidelines than we are at a mot test, which is why their cats have more material and restrict flow. I expect that mot standards will raise with newer cars but until then its a no Brainer to replace burned up cats with aftermarket "high flo" ones. Better look, performance, mpg, sound..... If u go pay 3k for oem cats ur dumb. Where i live we have no inspection so ill be straight piping it.

[@repairitdontreplaceit]

all that work and you use second hand 15 year old o2 sensors ! wtf ?

[@RoadandRacetv]

O2 sensors are expensive! If these work then why not.

[@UserYoutube-i6f]

Damn that nissan is a rusty piece of junk 😂

[@ImJustKindaHere]

Let's be real here... with a second O2 sensor bung that long like that, of course you are going to pass emissions. There is no way that second O2 sensor is getting an accurate reading when it's that far away from the exhaust gas flow. Compare it to the location of the original, there is no comparison. With a O2 bung that long, might as well have gone with a test pipe. You'll pass emissions either way.

[@stevieh6]

Even with the sensors not reading right, the exhaust gasses still need to be at the correct levels to pass the mot so the cats must be doing thier job

[@spencer82rocks]

Why would you put cats with old oxygen sensor and old stock muffler again---I don’t want to tell you what to do but mate --you already spend half of the money mine as well change the whole thing and brag about it because you deserve it not old pipe connected to the new ones it’s just not right

[@brentfaas1398]

I want to do the same thing. I don't want a cat back exhaust to go along with the hi flow cats because the sound is too loud. I'm ok with a little more sound but not as much as the full exhaust upgrade. If I can get a little more power and the sound is still on key then I would be happy. Too bad he didn't have a sound comparison amd he didn't comment on the performance difference. That was what I was watching the video to find out.

[@neilobusk]

yo Neil... hopefully nissan would re-fund you for the jube.clips for the heat shields on the old cats...... They always rust first.. N x

[@ivanvolkov2239]

Yeh it's worth doin if ya useing a better sports exhaust