350Z ISR HIGH FLOW CATS

Got a sweet deal on some ISR HFC's for my 350Z from an online store. Video is basically a review of how they perform with the ISR Y Pipe and ISR Single GT exhaust. Sound clips of before and after are included! :)

[@benbackus2000]

I’m shocked no one has commented properly answering you about the “rattle noise” you’re hearing at low RPMs. Almost every 6 speed 350z and 370z has this clutch/flywheel chatter, mine does it loudly at idle as well. I have an 80k mike HR, that sound is perfectly normal.

[@therealjessescheel]

Noted. Jealous of your HR! 🙂

[@movingfiber]

Mine sounds like the rattle is coming from where the headers meet the cats but this is good to know!

[@papimasfuerte4671]

Rattle is likely from your cats. Aftermarket clutch will rattle as well.

[@itryhardwin3166]

wow that’s crazy i have a 2015 q50 and i also have that rattle when at low rpm’s and slowly dropping

[@williu02]

Thank you so much for this review. 100% what I was looking for🙏

[@cre8tivegarage157]

getting new parts is the best

[@therealjessescheel]

Totally agree! I really appreciate you watching! 🙂

[@OM4Rx]

Can’t wait till you get hit with the algorithm, the people are gonna love you and the vid quality is super sweet

[@therealjessescheel]

Glad you like it man! I really appreciate the positive words! 🙂👍

[@andymeredith6921]

You deffo went the best route with this set up last year during lockdown the only back section I could get was the ISR Blastpipe. Yeah well it’s so loud it sounds like a racing Ferrari at 6500 revs ! The downchanging is mental but is way too much for normal neighbourhood driving unless you want everyone to hate you , it actually hurts on the outside of the car. I have high flow cats, Cobra Y pipe and ISR Blast pipe , it’s being changed this week for Cobra unresonated dual exit rear section as my daughter is having it and using it for a daily.

[@therealjessescheel]

Yeah I am glad I bought everything when I did. Prices have gotten so crazy on everything and stuff is super hard to find now. ☹

[@Sigue24]

This video makes me very hype for my High flows coming in.

[@m00rhsuM]

Thanks for the video. I am considering this set up. I already have the high flow cats but I have an invidia N1 exhaust. I really like the single exit look and sound.

[@therealjessescheel]

My latest video has quite a few sound clips in it if your looking for more

[@johnbridges656]

Hey I realize this comment was 10 months ago, but I have a 07 350Z Enthusiast roadster and I am considering running the Invidia cat-back and Y-pipe with the ISR high flow. It is my daily vehicle until I get done with college I was wondering if you could give a little feedback on the setup.

[@illuminated6712]

It sounds really good !

[@therealjessescheel]

Months after the install I still love it! Wouldn't change a thing about it!

[@autoperformance503]

@@therealjessescheel did you feel any difference in hp and torque with high flow cats?

[@dheerajrajeevan4867]

I’ve been watching you for a while dude, back when you were rocking the muffler delete😂! Love the progress man, I’m seriously considering the ISR hi flows paired with my Tomei catback. My Y-pipe is starting to leak, I’m thinking of upgrading to a 370Z y-pipe. My tomei with stock cats is pretty loud, but it’s nowhere near loud as my friend’s 17 stang 5.0. I’m hoping the ISR hi flows will give me that extra volume without messing my sweet tone!

[@therealjessescheel]

Thanks for being a long time watcher! 😎👍🏼 The ISR cats add a little rasp and a few decibels over stock. The choice is yours! 🤙🏼

[@DPrent]

Look into the trans mount. ISR makes one of those as well. Z1 too. Its around $100 from Z1.

[@therealjessescheel]

I still need to do that just keep putting it off.

[@josephviray9792]

Hey i just wanna ask if within a certain miles did yours throw any cel?

[@pkilla617]

Good video man sounds great definitely best bang for the buck..

[@therealjessescheel]

For sure! Really really love it now after a few months of use. When the temps are just right it sounds better than any other Z I have heard in person. right around 75 degrees. Tone changes when its hotter or colder than that to something I am not in love with but still really like.

[@markpedroza516]

Do you plan on tuning your Z? Im currently debating on getting these or the resonated test pipes. Live in Cali so it doesn't really matter which route I go since they're both for off road purposes. Looking for more gains at this point.

[@therealjessescheel]

I might tune it someday. Currently not on the radar. I could be wrong but I feel like these are 50 state legal. I do not have the paperwork anymore though so I cannot verify.

[@markpedroza516]

@@therealjessescheel I believe they are 49 state compliant. Cali has s#itty laws

[@VQkaz]

This is the only vid on KZbin with a vq with the isr cats I just bought them for my g

[@dave_oro]

How are they holding up? I’m debating on these and the berk HFC

[@estebanrubalcava1281]

Has cel pop out yet?

[@adanarceo4636]

So are they worth the money. Also did you have a check engine light?. Thanks in advance.

[@uriel313.]

@@dave_oroi’m debating on the two as well, did you ever decide? if so how did they hold up

[@jorgecuadros8980]

Hello great video & review🤙how much louder would you say this setup got with the hfc’s? I’m debating between this exact setup or going with the same thing just megan single catback over the isr catback I don’t want an obnoxiously loud exhaust so that’s why I haven’t decided just yet. Since the megan exhaust has no resonator I’m not sure if it will be too loud with the hfc’s

[@therealjessescheel]

I would say it got about 30% louder when I put the HFC's on. The ISR system on stock cats is pretty tame. Great sound but it personally left me wanting more. If you go on long drives I do not recommend high flow cats mixed with the ISR system because it does get a little drone in the cabin. In town ripping and tracking though it is an amazing setup! Check out my video driving to Roosevelt Dam. The sounds in there are pretty accurate. kzbin.info/www/bejne/qp_ZmI2aiJumgbs Thanks for watching man I really appreciate it! 🙂👍

[@jorgecuadros8980]

Thank you appreciate the fast response! Great quality videos man you deserve more subscribers they’re really entertaining keep it up!

[@kennychokes3271]

assuming since you don’t have check engine light. You put on o2 sensors. What kind did you go with?

[@alfredoibarra7958]

Any recommendations?

[@livinlegend2135]

All 350z don’t burn oil it’s just all the crappy oem oil pumps tend to fail especially after 100,000 miles which leads to all the problems VQs are known to have. idk how Nissan let that slip

[@dasidewaysginger1514]

I think youre talking about the gallery gaskets that kill oil pressure

[@therealjessescheel]

Yeah mine is pry failing then. 🙃

[@robertevans1294]

Great review👍🏽👊🏽

[@therealjessescheel]

Thank buddy! 👊☺

[@DragoMusivini]

Did you get a check engine light?

[@nighthawk0077]

Are these better than Kinetix?

[@brandontakezoff4474]

I got a 05 g35x got ISR y-pipe and single exit from a buddy, I was thinking about getting ISR hfc as well but what I read the HFCs are 2.5 inch piping where the y-pipe is 2.75 inlet. A exhaust shop should be able to weld that right? Or possibly have adapters for that I would say..

[@yeayeayoumadkid5792]

You think a y-pipe and a tomei expreme ti would be good in Tempe/Phoenix Arizona?

[@devon5078]

if you do get the motordyne resonated y pipe it helps so much with rasp

[@therealjessescheel]

For sure! The Tomei is rad from what I have heard. I just didnt want to spend that much.

[@OM4Rx]

I ducking luv your energy big dawg

[@therealjessescheel]

💯✔😊👍❤

[@gabrielpedraza3823]

How loud would you say it is shifting at 3k RPMs. Im looking for something that isn’t too loud when im barely going 20 mph

[@therealjessescheel]

Not loud at all. Its tame when you want it to be and sporty when you ask it to be. Does drone a little at 75 to 80 mph though.

[@trippygeemane53]

When you first installed them did you had check engine light I need to change mine but I was told to change sensors as well what do you recommend ?

[@therealjessescheel]

Everything on mine points to front O2 sensor. I haven't done anything about it. My Z is not a show piece so I kind of neglect it when it comes to putting money into it. 😬 If you look at how the rear O2's mount it is highly unlikely they are the cause due to the massive extension that are installed with them.

[@Markizzle212]

It’s the throwout bearing that’s making the rattling noise.

[@therealjessescheel]

I figured it was pry somewhere in the trans just no idea where. Your pry right but I wont do anything about it until I have to. Thank you for watching and for the input! I really appreciate it! 🙂

[@bn4241]

I think these will sound very good on my Infiniti Q50 w/a custom exhaust setup.

[@therealjessescheel]

They definitely add some noise! Keep me posted if you put them on I would love to hear how it turns out!

[@christianrivera1410]

Would my check engine light come on with the cats ?

[@charlie_sam]

Im looking into buying the 1320 H.F.C but, i bought manzo test pipes but right when i hit 3k rpms it sounds like a straight loud trumpets. What would be better to not have a loud trumpet HFC or resonated ?

[@therealjessescheel]

I like the sound I am getting out of my HFC's but I might be biased. I always felt like test pipes made the Z's a little to loud.

[@HungryYett]

Thinking of getting these cats. Do they make it raspy/drony?

[@therealjessescheel]

Little bit of rasp and some drone if you do long highway drives. I have lots of other videos driving the car with this setup and the sound is true to real life.

[@HungryYett]

@@therealjessescheel I’ll check them out!

[@Cerrvto]

If you have an aftermarket clutch the grabbing of it in low gears could be making that noise

[@therealjessescheel]

Its still stock clutch to my knowledge

[@Cerrvto]

Jesse Scheel that’s odd man, you should try and see if everything in the Transmission is sound

[@therealjessescheel]

@@Cerrvto Ill look into it 👍

[@JB__S9]

How bad does your exhaust smell with the HFC?

[@therealjessescheel]

You would never know it is a high flow cat in my opinion other than the noise. I dont smell anything different from stock cats even in a garage.

[@jafethgarcia4819]

I hear test pipes make even the inside of the car smell , is that right?

[@elcolombiano9419]

@@jafethgarcia4819 yes if you got a leak

[@jafethgarcia4819]

@@elcolombiano9419 damn I think I have a leak…. Got hfc

[@elcolombiano9419]

@@jafethgarcia4819 put some gasket Seal around it and you will be good.How’s the hfc I got berk non test pipes so loud

[@adanarceo4636]

Hi brother, did those cats throw a cel on.? Thanks for sharing 👍🏻

[@therealjessescheel]

Front O2 threw one occasionally but not the cats.

[@payneblair7807]

Do you have rasp or drone with this setup?

[@therealjessescheel]

Little rasp and yes some highway drone. If you go ISR Single GT Catback there is 0 rasp and 0 drone. Same if you add the y pipe to it. The HFC's added both rasp and drone though.🙃 Check out this vid if you have not yet. It was before I installed HFC's. kzbin.info/www/bejne/fJrKaIiMapxjoq8

[@josuequinteros2006]

Do you know why some people call this isr test pipes instead of HFC ?

[@marcoantonio9107]

Ik this vid is old but did your cats rattle? Cz i have them paired with indiviia gemini exhaust and when I accelerate you can hear some rattle noise not toooo loud

[@therealjessescheel]

Sold this car awhile back but never had a rattle come from the exhaust setup.

[@cavz2158]

fuck these cats fast intentions is the only way to go to get rid of rasp, isr made my shit rasp insanely

[@AbelAlcantar]

Any body happen to know if it’s carb legal (doubt it) I know he said it’ll pass smog but what about an inspection?? Say getting pulled over

[@therealjessescheel]

50 state carb legal.

[@dgc3181]

Just put these on today on my G37 and I'm getting a little burn smell is that normal?

[@therealjessescheel]

Yeah I definitely smelt a little something for a day or two when I first installed these and also when I installed my catback.

[@dgc3181]

@@therealjessescheel Okay sounds good I did research and I guess it's normal to get that smell when you install new cats.

[@cristiansalinas1717]

Did you ever figure out the rattling noise? My 370z makes the same noise and it’s super frustrating ngl

[@therealjessescheel]

Sold the car but I believe it was throw out bearing.

[@josemanuelcasasjr6665]

hows the isr Hfc? any problems with them

[@therealjessescheel]

No problems. No complaints. :)

[@_Lafama]

Did you order 2 or they come in pairs?

[@therealjessescheel]

They come in pairs. 🙂👍

[@stevieh6]

Do you still like the sound after having it on for a while? I have the same exhaust with stock cats but am thinking of going HFC's for the power gains

[@therealjessescheel]

I still love it. The HFC’s add a few decibels and a tiny bit of rasp. It doesn’t really matter but aesthetically under the car it really cleans things up 👌🏼

[@yosmeporlaroma]

Check engine light on?

[@therealjessescheel]

Not currently. Sorry for slow reply.

[@abbas674]

How are th3y holding up and do they smell like mufes and did you use a o2 adapter to not get a cel

[@therealjessescheel]

Holding up fine. I have a code from them but it’s my up stream O2. Relatively confident I could get it cleared with new O2.

[@alfredoibarra7958]

We have the exact same setup for exhaust and cats but mine throw o2 codes

[@CeaseSRT]

Would you by any chance have a link to these ? And will they throw a CEL?

[@therealjessescheel]

I bought them on ebay through enjuku racings store. If your o2 sensors are newer they should not throw a code. I recently started throwing one though but my sensors are original and I have over 180,000 miles on my Z. Thats what the shops are telling me the code is from anyways.

[@Fadz-zg6bt]

@@therealjessescheel how do you remove the code??

[@abbas674]

Did you get a CEL after the hfc

[@therealjessescheel]

Yes. I can clear it when disconnecting battery but it always comes back eventually. I was told the upstream O2 needed to be replaced when I did it though and I still haven’t fixed it. That’s the code it throws.

[@abbas674]

@@therealjessescheel sp it's your o2 sensor

[@LuisGonzalez-vx1oo]

It's best to buy new sensors, when replacing the cats.

[@abbas674]

@@LuisGonzalez-vx1oo yes I have brand new cats but my 02 bank 2 is on

[@LuisGonzalez-vx1oo]

@@abbas674 did you ever do the ECU reset? It's a must when ever replacing parts on these cars they're sensitive

[@djkingsy]

you from the valley bro?

[@therealjessescheel]

Yes sir! I live in the PV area. Flag me down if you ever run into me out and about! 🙂👍

[@LuisGonzalez-vx1oo]

Do you need O2 sensor extensions

[@therealjessescheel]

No. It comes with them.

[@LuisGonzalez-vx1oo]

@@therealjessescheel sweet

[@meyerpropertymaintenance4462]

I know this is an older video but I have that exact same sound to the t under lower rpms I was almost 100% it was the cats heat shields are strapped down and don’t rattle I thought it was the honeycomb breaking up but after you replaced yours and still have the rattle it has to be clutch or flywheel chatter. Im disappointed I spent 500$ on cats thinking it was them lol.

[@therealjessescheel]

Pretty sure it’s throw out bearing.

[@meyerpropertymaintenance4462]

@@therealjessescheel yeah it’s so deceiving it sounds like an exhaust cat rattle never would of thought it’s throw out bearing

[@themanny4089]

hows the smell?

[@therealjessescheel]

Didn't notice one with these cats. The exhaust when I first installed it did.

[@bendohber4937]

Do you need a tune for the new cat or nah

[@therealjessescheel]

No.

[@fernandog7791]

Did they have a smell?

[@therealjessescheel]

I did not notice a smell with the cats. I did when I installed the exhaust though.

[@fernandog7791]

@@therealjessescheel oh okay thanks man i just got my isr single exhaust but i smelled it with my straight pipe y pipe coming soon tho

[@fernandog7791]

@@therealjessescheel what about smoke?

[@gnrly_bstrd5155]

Cel?

[@uriel313.]

will these fit g35 sedan?

[@spartansiio6971]

yes i have them in mine and i’ve got a magnaflow cat back exhaust. the pair of them sounds amazing, not the loudest but it’s toned

[@poptartgofast]

Was just thinking I need to gut my cats or some solution to this rotten egg smell . Sick you already got a video on this.

[@therealjessescheel]

☺️👍🏼

[@brandocr250]

Drone?

[@therealjessescheel]

Maybe the end scene. Nowhere else in the video though.

[@carlosdavis2073]

Super cool. Do you have an instagram page?

[@therealjessescheel]

Yes I do! @jessescheel 😊

[@luigui707]

Want this exhaust but I don't want a ticket

[@therealjessescheel]

Nothing illegal about this exhaust. Should be good in all 50 states! Thanks for watching! 🙂👍

[@luigui707]

@@therealjessescheel sick I will look into it

[@djdarkmunk]

please fix your rims sand paper and rim paint its cheep and just takes some time

[@therealjessescheel]

You got it I will get on it.

[@therealjessescheel]

@@djdarkmunk SUPER CLEAN!

[@bsenoran]

@@therealjessescheel now that you got some new shoez, you gonna put the stock wheels restore on the back burner lol..

[@kletzlmao]

5:34

[@therealjessescheel]

💯✔🙂👍

[@Daniel22777]

110 degrees !! 😬

[@therealjessescheel]

yeah it gets pretty hot!

[@dasidewaysginger1514]

Am i the only one concerned about that low oil pressure????

[@therealjessescheel]

Pretty common for the DE Z's to run low. 14 PSI or so at idle. Good eye man! 🙂