Yeah I have the plate system and it seems to make a kinda whistling noise under accelartion when I am not spraying the nitrous. Anyone else have this? Is this normal? Thanks.

 

No whistling here.

 

No Noise Here

 

Hmm. Thats odd. What do you guys think it could be? Its not very loud...just barely noticeable.

 

I would check the intake track, and make sure everything is tight, the air duct, air coupler, the air filter etc...did you torque the throttle body bolts correctly? Does it run ok and the whistle is present or is running crappy (like a vaccum leak?).


Make sure the air coupler was trimmed to reflect the distance shortened by the addition of the plate. Also make sure it is sealed around the throttle body (feel it all the way around it, it may look ok from the top, but the bottom may be screwed up).

 

How much should you torque the throttle body bolts to?

 

According to the NOS plate instructions I recommended to ya which has very detailed Corvette instruction...

http://www.holley.com/data/Products/.../199R10361.pdf

Page 10
106 in/lbs = 8.8 ft/lbs

 

Mine sings a little. It's kinda like a tuning fork under acceleration in higher gears. Doesn't bother me though.

 

Thanks beer. I know I got them plenty tight. I wonder what it could be?

 

Everything is tight on the air ducting? Other than that I do not know

 

Yeah I know. Its weird. Its almost like a whine.

 

Yep, heard that with a plate kit also.
Robert

 

mine does it through the midrange and only under civilized driving. assumed it was normal as the incomming air passed over the nitrous/fuel ports in the plate.(like a whistle) also thought it was my waterpump bearing going out for a little bit as thats got a small leak that i cant seem to find and need to replace.

 

Thanks guys for all of the help. I feel better now knowing its nothing wrong with my car. I never even thaught about those fuel/nitrous ports making the noise which makes sense. Thanks again.

 

I have never really payed attention to that. But it does make since that it may whistle allittle.I have heard that with throttle body spacers in the past also.
Its probley the air cutting across the discharge holes.
Dave

 

My Trailblazer does it also. It does it when mainly when I lug motor at low RPMs. I thought it was my PCV valve going bad..

 

And all this time I thought my car just had a thing for the ladies!! LOL. I haven't been listening for it...and with all the sweet racket coming from the motor i doubt i'd notice anyway. Love Dave's plate.

 

Check for air leaks, if all is tight and sealed just might be air harmoics. Now since yall moved the t-body foward and have a larger plenium you might just be hearing the air ressants and X rpm.
Call it the "Nitro Daves musical nitrous plate". lol

Ricky

 

You have heard the saying " Whistle while you work "


-Chris

 

Now if you can make it have different sounds during the WOT pass, and let the customer pic which one he wants. now you have something.

Ricky