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2004 Mazdaspeed MX5 Hi-Mod / 2022 Sport Touring
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Interesting info that came up in my research. Pease report back if you get anything in your can. Also what your build is.
My build is stock and staying that way. I’m not expecting to find much in there, but for the cost of the can relative to the cost of needing walnut blasting and the other issues that may arise, I’ll run my can. There is too much variability between even the same engines for how much blow by they produce, based on maintenance history, weather, driving habits, etc. but generally speaking, DI engines are pre-disposed to some issues and I’d like to avoid them
 

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I agree it's low cost high reward item. Thanks for the added info. I'm not going to be stock so more potential reward for running one.
i also binged a dozen videos from Engineering Explained and they also present a lot of great info on it:
 

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Haven’t opened it yet. Going to when I do the oil change, that will be soon. I’ll post pictures of it and an update.
I'm having a really weird issue and hope you can chime in. So with the can installed I get this weird random rattle almost sounds like its coming from the dash and only hear it in the car. Checked under the hood and everything looked fine, I kept the can installed but removed the hoses and connected the stock PCV-Manifold line and the sound completely went away. Hooked the can back up, rattle is back.

Does yours make some weird noises? I'm wondering if the can is acting almost as a sound amplifier for noises in the crankcase at certain RPM]

edit: its not just me, https://www.civicx.com/forum/threads/mishimoto-catch-can-updates.5443/
 

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Discussion Starter · #26 ·
I'm having a really weird issue and hope you can chime in. So with the can installed I get this weird random rattle almost sounds like its coming from the dash and only hear it in the car. Checked under the hood and everything looked fine, I kept the can installed but removed the hoses and connected the stock PCV-Manifold line and the sound completely went away. Hooked the can back up, rattle is back.

Does yours make some weird noises? I'm wondering if the can is acting almost as a sound amplifier for noises in the crankcase at certain RPM]

edit: its not just me, https://www.civicx.com/forum/threads/mishimoto-catch-can-updates.5443/
Thank you! I just got a cheapie baffled can like I have in my MX-5 and going to install this weekend, I didn't want to "mod" the car but after some research it just seemed like a good idea for Turbo DI engines especially

Automotive tire Wheel Camera lens Camera accessory Tread


Just did my first oil change at 4200, oil can is working good!
 

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I'm having a really weird issue and hope you can chime in. So with the can installed I get this weird random rattle almost sounds like its coming from the dash and only hear it in the car. Checked under the hood and everything looked fine, I kept the can installed but removed the hoses and connected the stock PCV-Manifold line and the sound completely went away. Hooked the can back up, rattle is back.

Does yours make some weird noises? I'm wondering if the can is acting almost as a sound amplifier for noises in the crankcase at certain RPM]

edit: its not just me, https://www.civicx.com/forum/threads/mishimoto-catch-can-updates.5443/
I also have the rattle from my Mishimoto. It sounds like it's coming from the dash but I never had the rattle before I installed the can. I hope there is a solution for this as it is annoying.
I'm having a really weird issue and hope you can chime in. So with the can installed I get this weird random rattle almost sounds like its coming from the dash and only hear it in the car. Checked under the hood and everything looked fine, I kept the can installed but removed the hoses and connected the stock PCV-Manifold line and the sound completely went away. Hooked the can back up, rattle is back.

Does yours make some weird noises? I'm wondering if the can is acting almost as a sound amplifier for noises in the crankcase at certain RPM]

edit: its not just me, Mishimoto Catch Can Updates
This exact same thing is happening to me.
I called Mishimoto customer service and they told me to tighten then nut inside.
I hope this works.
 

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I also have the rattle from my Mishimoto. It sounds like it's coming from the dash but I never had the rattle before I installed the can. I hope there is a solution for this as it is annoying.

This exact same thing is happening to me.
I called Mishimoto customer service and they told me to tighten then nut inside.
I hope this works.
It probably won’t, and honestly most of the time I can’t hear it listening to music. It’s just a pretty shitty product for $200, I bought it for their mounting bracket but the rest of the kit seems pretty trash for the price
 

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Contacted Mishimoto about the can rattle. As expected they’re giving me the runaround “oh it’s the bracket” “oh it’s the factory plastic hose above the bracket”. Needless to say I do not recommend dealing with them and buying something else
 

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Contacted Mishimoto about the can rattle. As expected they’re giving me the runaround “oh it’s the bracket” “oh it’s the factory plastic hose above the bracket”. Needless to say I do not recommend dealing with them and buying something else
Thanks for the info! Looking to do a catch can in the future so I will definitely keep this in mind when I shop around
 

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So a one dollar filter makes the catchcan....perfect now? Lmao
It’s more so the fact they are selling this thing for $200 and it has this flaw. And they don’t even have replacement filters and want to sell you a whole new can when the fix literally costs $1 to buy a new filter. The can WORKS fine but the rattle in the can ends up sounding like engine knock and people have spent big bucks tracking down noises that ended up being the fault of the can. My Miata has a different style can with a steel wool filter that doesn’t have this problem. Save $180 and buy this identical product. All I’m saying is Mishimoto is a ripoff and their service sucks


you can also just remove the existing filter and smash it down like I did to fix the rattle, but at that rate just buy the $20 can if you’re going to have to fix things yourself anyway
 

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It’s more so the fact they are selling this thing for $200 and it has this flaw. And they don’t even have replacement filters and want to sell you a whole new can when the fix literally costs $1 to buy a new filter. The can WORKS fine but the rattle in the can ends up sounding like engine knock and people have spent big bucks tracking down noises that ended up being the fault of the can. My Miata has a different style can with a steel wool filter that doesn’t have this problem. Save $180 and buy this identical product. All I’m saying is Mishimoto is a ripoff and their service sucks

Awesome, thank you for all the info.
Do you have dimensions/hose recommendations for the hook up? Length/diameter?
 

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Have any closer pics/top down of where the hoses go? Something I need to look into and haven't yet to see where I need to make the connections for the inlet and outlet

View attachment 14204
I’ll post some for you later and give you hose measurements. Pretty simply though. The IN line comes from the back of the valve cover on the drivers side, the out line goes to the intake manifold on the drivers side.
 

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I’ll post some for you later and give you hose measurements. Pretty simply though. The IN line comes from the back of the valve cover on the drivers side, the out line goes to the intake manifold on the drivers side.
Thank you :)
I know generally where the hookups go and I'm sure I can find some resources online, it'll be my first time messing with a catch can so just want to make sure I get it right!
 

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Thank you :)
I know generally where the hookups go and I'm sure I can find some resources online, it'll be my first time messing with a catch can so just want to make sure I get it right!
I gotcha. Might be easier if I just make you a little video
 
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