OverKill 80mm Throttle Body - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

sspade · 01-22-2017, 07:07 PM

Finally got around to installing mine this weekend. Happy with quality and fitment. Super easy install that takes about 20 mins.

Question I have for you guys:

I'm noticing a whistling type noise that seems like it's coming from my CAI now. Specially around 2k rpms. When I step on it, it goes away but if I feather the pedal I can pretty much get it to do it constantly.

I've put about 2 hundred miles on car since install and this hasn't changed. Almost sounds like there is an air leak or seal issue etc.

Anyone else experience this? Is it normal?

Kenny Camaro · 01-22-2017, 07:13 PM

No, never had that experience.

sspade · 01-22-2017, 07:17 PM

Hm. Weird. Hopefully someone with the CAI brand intake can chime in. Worst case, I'll take it apart and reinstall next weekend.

I don't understand what I could have done wrong. Was sure to make sure everything was snug and good contact with intake box etc.

BluedEvil21 · 01-22-2017, 09:26 PM

If you don't have a check engine light shouldn't be an issue...my engine whistles on accelerating sometimes though I don't have the same set up

sspade · 01-22-2017, 09:35 PM

No lights whatsoever on dash...

VanillaE · 01-22-2017, 09:37 PM

So I have the ported intake manifold and spacer as well 80mm tb. What would porting the 80mm offer ? And is there anyone that could do it ? Or is it easy enough I could do it ?

VanillaE · 01-22-2017, 09:38 PM

Quote:

Originally Posted by sspade

Finally got around to installing mine this weekend. Happy with quality and fitment. Super easy install that takes about 20 mins.

Question I have for you guys:

I'm noticing a whistling type noise that seems like it's coming from my CAI now. Specially around 2k rpms. When I step on it, it goes away but if I feather the pedal I can pretty much get it to do it constantly.

I've put about 2 hundred miles on car since install and this hasn't changed. Almost sounds like there is an air leak or seal issue etc.

Anyone else experience this? Is it normal?

I had that experience the first time I installed it without using a gasket . Two days later I reinstalled and created the gasket and no problem ever since then

derek1387 · 01-23-2017, 12:05 AM

Quote:

Originally Posted by VanillaE

So I have the ported intake manifold and spacer as well 80mm tb. What would porting the 80mm offer ? And is there anyone that could do it ? Or is it easy enough I could do it ?

Your TB is already bigger than the port on the ported manifold.

You would want to port the manifold out to match the TB.

VanillaE · 01-23-2017, 07:01 AM

Quote:

Originally Posted by derek1387

Your TB is already bigger than the port on the ported manifold.

You would want to port the manifold out to match the TB.

When he ported my manifold he ported it to match a 80 mm tb

derek1387 · 01-23-2017, 08:22 AM

Then I wouldn't bother doing any more.

sspade · 01-23-2017, 09:11 AM

Quote:

Originally Posted by VanillaE

I had that experience the first time I installed it without using a gasket . Two days later I reinstalled and created the gasket and no problem ever since then

What gasket are you referring to?

I have the newest model of the OverKill TB - It does not require using liquid gasket and has a built in gasket.

The stock gasket in the end of the manifold seals against the adapter plate supplied with TB and then the TB itself has a built in gasket that seals against the plate.

I guess I can try cranking both sets of bolts down further. I only tightened them with an allen key and snugged them pretty good with the "ol wrist torque wrench"

Im pretty sure instructions stated not to over tighten....

Anyone else please share your thoughts on what Im experiencing...

derek1387 · 01-23-2017, 10:51 AM

Quote:

Originally Posted by sspade

What gasket are you referring to?

I have the newest model of the OverKill TB - It does not require using liquid gasket and has a built in gasket.

The stock gasket in the end of the manifold seals against the adapter plate supplied with TB and then the TB itself has a built in gasket that seals against the plate.

I guess I can try cranking both sets of bolts down further. I only tightened them with an allen key and snugged them pretty good with the "ol wrist torque wrench"

Im pretty sure instructions stated not to over tighten....

Anyone else please share your thoughts on what Im experiencing...

The original setup didn't have a gasket or oring groove machined into the adapter. That's what I'm assuming he is referring to. Will has made some changes based on my recommendations since originally coming out with the kit.

sspade · 01-23-2017, 01:15 PM

That's what Im thinking also.

Sssooo... What would you recommend. Does what I describe seem normal?

Would you take apart and crank the bolts down tighter? I kind of seems like its coming from the CAI (from drivers side corner of engine bay) but its hard to tell...

Mikeiser · 01-23-2017, 01:40 PM

I hear the exact same thing after installing on my Colorado. I really don't think its actually an issue. It happens with barely any throttle applied at any speed, which leads me to believe its the sound of air rushing past a near-closed TB. On the OEM TB, you couldn't hear it because of the immediate turbulence created right after the TB. Now, you have a perfect transition where the air flows smooth, past the edge of the butterfly valve, like a whistle.

01-22-2017, 07:07 PM	#1
sspade Drives: 2015 Camaro LFX A6 Join Date: Nov 2015 Location: Elk Grove, CA Posts: 675	OverKill 80mm Throttle Body Finally got around to installing mine this weekend. Happy with quality and fitment. Super easy install that takes about 20 mins. Question I have for you guys: I'm noticing a whistling type noise that seems like it's coming from my CAI now. Specially around 2k rpms. When I step on it, it goes away but if I feather the pedal I can pretty much get it to do it constantly. I've put about 2 hundred miles on car since install and this hasn't changed. Almost sounds like there is an air leak or seal issue etc. Anyone else experience this? Is it normal? __________________ Cold Air Inductions CAI : Apex Air Scoop / WW Relocate Kit : JacFab Intake Manifold Spacer : Overkill 80mm Throttle Body : Overkill Tuned : MagnaFlow Cat-Back Exhaust : Elite Engineering Catch Can : ZL1 Strut Tower Brace : Custom Tunnel Brace : JPSS Caster Locks : JPSS 32mm Rear Sway Bar : JPSS Billet Radius Arm Bushings : Pegasus Solid Sub Frame Bushings : 1LE Brembo Conversion : B&M 70273 Trans Cooler

01-22-2017, 07:17 PM	#3
sspade Drives: 2015 Camaro LFX A6 Join Date: Nov 2015 Location: Elk Grove, CA Posts: 675	Hm. Weird. Hopefully someone with the CAI brand intake can chime in. Worst case, I'll take it apart and reinstall next weekend. I don't understand what I could have done wrong. Was sure to make sure everything was snug and good contact with intake box etc. __________________ Cold Air Inductions CAI : Apex Air Scoop / WW Relocate Kit : JacFab Intake Manifold Spacer : Overkill 80mm Throttle Body : Overkill Tuned : MagnaFlow Cat-Back Exhaust : Elite Engineering Catch Can : ZL1 Strut Tower Brace : Custom Tunnel Brace : JPSS Caster Locks : JPSS 32mm Rear Sway Bar : JPSS Billet Radius Arm Bushings : Pegasus Solid Sub Frame Bushings : 1LE Brembo Conversion : B&M 70273 Trans Cooler

01-22-2017, 09:26 PM	#4
BluedEvil21 Drives: 2013 Camaro v6 hot wheels edition Join Date: Sep 2014 Location: New York Posts: 94 View My Garage	If you don't have a check engine light shouldn't be an issue...my engine whistles on accelerating sometimes though I don't have the same set up __________________ Drop a gear and disappear

01-22-2017, 09:35 PM	#5
sspade Drives: 2015 Camaro LFX A6 Join Date: Nov 2015 Location: Elk Grove, CA Posts: 675	No lights whatsoever on dash... __________________ Cold Air Inductions CAI : Apex Air Scoop / WW Relocate Kit : JacFab Intake Manifold Spacer : Overkill 80mm Throttle Body : Overkill Tuned : MagnaFlow Cat-Back Exhaust : Elite Engineering Catch Can : ZL1 Strut Tower Brace : Custom Tunnel Brace : JPSS Caster Locks : JPSS 32mm Rear Sway Bar : JPSS Billet Radius Arm Bushings : Pegasus Solid Sub Frame Bushings : 1LE Brembo Conversion : B&M 70273 Trans Cooler

01-22-2017, 09:37 PM	#6
VanillaE Drives: Black 2010 Camaro SS Join Date: Nov 2016 Location: Florida Posts: 29	Porting an 80 mm So I have the ported intake manifold and spacer as well 80mm tb. What would porting the 80mm offer ? And is there anyone that could do it ? Or is it easy enough I could do it ?

01-22-2017, 07:13 PM	#2
Kenny Camaro Account Suspended Drives: 2013 1LT RS Camaro Join Date: Apr 2016 Location: Southeast Michigan Posts: 3,494	No, never had that experience.

01-23-2017, 08:22 AM	#10
derek1387 Drives: 2015 1LS Red V6 Join Date: Aug 2015 Location: St Joseph, MO Posts: 1,849	Then I wouldn't bother doing any more. __________________ Sponsors: Overkill Motorsport BCS Auto JacFab Machining APDEG Dream Gear Mobile Audio Thanks to Will @ Overkill Motorsports, Jason @ JacFab, Jim @ Ohio Speed, Brandon at Dream Gear, and the boys at Randy Curnow Chevrolet 5th Gen V6 Performance Facebook Group

01-23-2017, 01:15 PM	#13
sspade Drives: 2015 Camaro LFX A6 Join Date: Nov 2015 Location: Elk Grove, CA Posts: 675	That's what Im thinking also. Sssooo... What would you recommend. Does what I describe seem normal? Would you take apart and crank the bolts down tighter? I kind of seems like its coming from the CAI (from drivers side corner of engine bay) but its hard to tell... __________________ Cold Air Inductions CAI : Apex Air Scoop / WW Relocate Kit : JacFab Intake Manifold Spacer : Overkill 80mm Throttle Body : Overkill Tuned : MagnaFlow Cat-Back Exhaust : Elite Engineering Catch Can : ZL1 Strut Tower Brace : Custom Tunnel Brace : JPSS Caster Locks : JPSS 32mm Rear Sway Bar : JPSS Billet Radius Arm Bushings : Pegasus Solid Sub Frame Bushings : 1LE Brembo Conversion : B&M 70273 Trans Cooler

01-23-2017, 01:40 PM	#14
Mikeiser Drives: 2015 Colorado v6 LFX Join Date: Oct 2016 Location: Texas Posts: 21 View My Garage	I hear the exact same thing after installing on my Colorado. I really don't think its actually an issue. It happens with barely any throttle applied at any speed, which leads me to believe its the sound of air rushing past a near-closed TB. On the OEM TB, you couldn't hear it because of the immediate turbulence created right after the TB. Now, you have a perfect transition where the air flows smooth, past the edge of the butterfly valve, like a whistle.