Hi guys,

For those that have installed this, did you get an additional whistle noise at partial throttle under load? I couldn't seem to find any threads on this and just wanted to make sure that it's ok. I contacted Tony and he said that it's like a 50/50 phenomenon where 50% of users get it, and the other 50 don't. Everything is torqued to 100 inch/lb and all seems fine performance wise(I think, but I don't trust butt-dyno). Thoughts and opinions appreciated.
If it matters, I have an '05 manual Z and got the copper iso-thermal kit.

 

Mine also does that at a certain RPM. I also have a popcharger on there too. I've had no issues since I put it on, over a year ago.

 

i was going to say, the mrev2 and plenum spacer certainly awoken the pop charger whistle on my car after i installed them. OP, do you have a pop charger installed?

 

Yup, I have a pop charger. The new additional sound is like a high pressured air whistle type of thing and it only happens during accel, never during decel. Doesn't really sound like the pop charger, and it never happens at WOT or really low throttle, maybe like at 25-50% throttle.

 

No noise here. I have the one without the iso-thermal kit...

 

If you torque the bolts correctly you have no vacuum leak. Drive and enjoy.

 

That was kinda what I was hoping I didn't have, the dreaded vacuum leak...my idle is exactly where it was before I installed the spacer(around 700rpm and rock steady) that's why I'm so confused as to why I have that additional noise. I guess I will learn to love it.

 

Yeah, with any sort of intake filter you may hear an additional whistle after installation.
As long as everything is torqued correctly you should be good to go!
I have a popcharger and a 5/16, and after installation my pop charger was noticeably louder.

Good luck!

 

The whistle sound is very normal. It happens in about 1/2 of the installs and it becomes much more noticeable if you have a pop charger.

If your idle is solid then you are all set to go.

 

that whistle is slick. I have the 5/16 and a pop charger as well - around 3k-3.4k at half throttle down it whistles in 1st 2nd and 3rd.

 

Precisely!!!!

Glad it's normal. The whistle is pretty cool actually, it's almost like a supercharger type thing, lol.

 

yep. I've been followed twice and had people asking me if 'my car was turbo?' lol. they don't know what to make of the whistle. pretty funny.

 

I got that noise after a install of a CAI on a 5.7 hemi i think it is just the noise most intakes make when it receve a a$$ load of air.......

 

yo eddog so i've been using the 5/16 spacer you sold me and i hear no additional whistle at all when accelerating. do you hear anything when you let off the throttle?

 

I have the popcharger and hear the whistle sound as well. Same as you, only under load and only at 20-25% throttle, regardless of RPM or gear.

I'm hoping that when I add my plenum spacer that I don't lose it. It has grown on me and I think I would miss it.

 

Just Curious i just ordered my Spacer and PopCharger, is their any suggestions on installation process, any thing that I should be aware of before installing, maybe any issue u ran into etc. Also did u install the PopCharger first or did u install the SpaceR?

 

The Motordyne instruction manual has been written with years worth of added tips, tricks and suggestions gained from the forums. Follow that installation manual and you are good to go.
Then of course I'm always available by phone if you need help during your install.

As for the sequence of installation. Don't install them at the same time. I suggest installing the modifications no less than one day at a time and give it time enough to drive around after each install. This will let you know the results of each installation in isolation.

 

Wow this thread just made me feel better lol been going through the same thing was about to post this message below

Plenum spacer*

Hey guys, I also had just a stillen intake / z tube before installing my 5/16 iso thermal copper spacer. Same thing here, strange sucking/whistling sound almost like I'm boosted coming on around 2000-2500 RPM under load, wasn't there before, pretty loud, definitely sounds like a leak but I double checked everything. Idle is fine, car of course feels little more snappy but the sound is driving me nuts n making me concerned, in park when I rev you hear just the intake but in drive when I rev I hear that loud whistle / sucking sound, thinking about redoing everything from step 1 for peace of mind, anyone else have any input ??

 

So yeah, in short, all is fine assuming the other variables mentioned are all ok

For what it's worth, i didn't get the whilst on mine, but then i run a standard air intake.

 

The pop charger's cone filter design is what makes the whistle sound. The spacer just makes it more noticeable if you already have a pop charger.