[[email protected]]

So I recently got a 2009 Mazda 3 hatchback 2.3L l-4 with a short-ram intake; and I want a little more sound coming from the engine rather than the exhaust, currently just have a stock motor and the only rumble I get is from the magnaflow exhaust I have on it.

 

[arathol]

Do you even know what a blow-off valve is?

 

[[email protected]]

for your information no I do not.. I am new to the modding community; and I heard a lot of my friends talking about installing them on their cars. Wasn't sure if it was even possible. Not everyone knows cars all that well. I'm wanting to learn more.. thank you.

 

[[email protected]]

If it's possible, awesome! Provide me with a how-to or something I can reference or a related forum that explains it. If it's not possible, well then thanks for the information

 

[arathol]

A blow-off valve is what controls the boost pressure on a turbo. Assuming that since you are not posting in the Speed 3 section, your car does not have a turbocharger. If you don't have a turbo you don't need a BOV.
If you do have a turbo car, you already have one that works properly, as in vents back into the intake. Don't muck it up by installing a valve that vents to the outside.

 

[[email protected]]

that would be correct; I do not have a turbocharged car. I wasn't sure if it was possible on it as I've heard people say that it's possible; and others say it isn't. Like referred to fake BOV, but thank you for the information. Can you recommend anything I could do to get more performance/nicer sound from the motor? Rather than just the exhaust. It's weird having a bone stock motor with a modified exhaust; (bought car this way)

 

[CerealKiller]

Air intake: AEM SRI or CAI.
CK

 

[[email protected]]

@CerealKiller I've currently got a SRI on it; no branding that I can tell; in your opinion which is better? The CAI or the SRI? And besides the SRI/CAI what else will make the motor less stockish sounding. If anything

 

[CerealKiller]

A tune. RMM. CAIs are just SRIs with heat shielding and stuff. Each one resonates and sounds differently.

K&N 69 Typhoon is the loudest IMO. I would use a non-oiled AEM cone filter with it though. It comes with an oiled filter. I have one for sale if you are willing to part with $100 + S&H.

K&N 69-6032TS
CK

 

[[email protected]]

Certainly will take it into consideration! What is the purpose of rear motor mount? Like I said I am new to a lot of this stuff lol

 

[CerealKiller]

RMM stands for rear motor mount. It is what sits at the bottom of your engine and holds the engine to the subframe of the car.

It is a heavy chunk of metal with rubber bushings.

You replace it with a lighter aluminum cast housing with stiffer poly bushings.

Engine will have less movement and be able to engage better.

Slight increase in engine noise and cabin NVH as a result. You FEEL the engine better as its mounted more solidly to the car.
CK

 

[[email protected]]

Ah okay I watched YouTuber @RoadRoyals install one on his Mazda 3, mentioned that it makes the car feel tighter and more responsive.

 

[CerealKiller]

Exactly. It does add cabin noise though. Especially when the A/C is on. I increased my cars min idle to 750 rpm to compensate for the added noise when at idle.
CK

 

[[email protected]]

how do you increase the min idle on a 09 Mazda 3 S (not a speed)? Cause I might look into the RMM, but with the whole COVID-19 money is tighter lol

 

[CerealKiller]

You would need a tune. They can adjust it.

I got mine from OV Tune.. they set min idle to 750... Increased max RPM to 7k..increased max speed to 150 mph...low end torque increased.. throttle remapping.. basically made the car more fun to drive.

You usually do the tune last though. Once you have installed everything you want. That way you won't have to make adjustments as you install more stuff.
CK

 

[Kingklenza]

A tune. RMM. CAIs are just SRIs with heat shielding and stuff. Each one resonates and sounds differently.

K&N 69 Typhoon is the loudest IMO. I would use a non-oiled AEM cone filter with it though. It comes with an oiled filter. I have one for sale if you are willing to part with $100 + S&H.

K&N 69-6032TS
CK

Hi mate do you still have that air intake