LS6 intake installed, now whistle, but no codes and runs well???
03-24-2009, 09:46 PM
#1
LS6 intake installed, now whistle, but no codes and runs well??? Alright guys over the winter I installed an LS6 intake, ported tb, and smooth bellow. I just got the car out tonight for its first real drive and after I got back to the apartment I have a slight whistling noise coming from the engine bay but cant pin point quite where. If there was a vacuum leak from the intake install would it definitely throw a code? Right now I have no codes, it acts fine, idle is good, not down on power or anything, and seems to run well. The whistle has me wondering though...
I want to make sure this is not an issue before the duals go on becuase after I am sure I will not be able to hear these little sounds after....lol
I want to make sure this is not an issue before the duals go on becuase after I am sure I will not be able to hear these little sounds after....lol
03-26-2009, 07:10 AM
#5
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If you had a stock induction before then I would say you noticing the whistle is normal but if you already had the silencer removed before the intake you might have an issue? The factory induction is a lot quieter than all after market setups, with or without the LS6 intake. My induction whistles right now and I still have the LS1 intake. I am running a K&N FIPK with a Shaner ported TB.
03-26-2009, 12:51 PM
#6
If you had a stock induction before then I would say you noticing the whistle is normal but if you already had the silencer removed before the intake you might have an issue? The factory induction is a lot quieter than all after market setups, with or without the LS6 intake. My induction whistles right now and I still have the LS1 intake. I am running a K&N FIPK with a Shaner ported TB.
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03-26-2009, 02:30 PM
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easiest way to tell is with a smoke machine. my truck always made a funny whistle noise and everyone said it was normal. when we dyno'd the truck was not making the power it should have been. hooked it to smoke machine, and turned out i had 3 leaks. All were small and i didnt notice any of them. made my truck run even better. easiest way to make sure that its not a gasket or PCV line
03-26-2009, 03:04 PM
#9
try and use your heater and turn it to floor and then vents etc....
if it stays on just one (like all the air just goes to floor no matter which one you turn it to)
then you have a broken vacuum line in the very back of the intake by the map sensor
i have noticed this on a lot of intake swaps its very common to break it and never even notice it, then you wonder why your damn ac/heater does not work properly
if it stays on just one (like all the air just goes to floor no matter which one you turn it to)
then you have a broken vacuum line in the very back of the intake by the map sensor
i have noticed this on a lot of intake swaps its very common to break it and never even notice it, then you wonder why your damn ac/heater does not work properly
03-26-2009, 03:59 PM
#10
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I also use lighetr fluid to find vaccum leaks. Shoot it at the areas of possible leak and the idle and noise will change when you hit it. Another alternative is a stethoscope - I use mine all the time so worth the investment (they're cheap).
03-26-2009, 05:18 PM
#11
try and use your heater and turn it to floor and then vents etc....
if it stays on just one (like all the air just goes to floor no matter which one you turn it to)
then you have a broken vacuum line in the very back of the intake by the map sensor
i have noticed this on a lot of intake swaps its very common to break it and never even notice it, then you wonder why your damn ac/heater does not work properly
if it stays on just one (like all the air just goes to floor no matter which one you turn it to)
then you have a broken vacuum line in the very back of the intake by the map sensor
i have noticed this on a lot of intake swaps its very common to break it and never even notice it, then you wonder why your damn ac/heater does not work properly
03-27-2009, 06:41 PM
#12
Update:
I used a mini torch with just the gas on at the suggestion of another member and sprayed the gas all around the intake, TB, all hoses, anywhere I could possibly see there being a leak and found none. I couldnt really get it all the way to the back cuz of the cowl but it was close enough and enough to put my mind at ease! The duals will be going on tomorrow as scheduled:grin:
Thanks for all the help guys!
I used a mini torch with just the gas on at the suggestion of another member and sprayed the gas all around the intake, TB, all hoses, anywhere I could possibly see there being a leak and found none. I couldnt really get it all the way to the back cuz of the cowl but it was close enough and enough to put my mind at ease! The duals will be going on tomorrow as scheduled:grin:
Thanks for all the help guys!
03-27-2009, 09:17 PM
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Here check this vid out. http://www.youtube.com/watch?v=APjWipccRhE
Go to the end of the vid for the intake noise.My intake swap from stock to a bbk 80mm and TB w/ the volant cool air intake makes quite a noticable whistle. You can even hear it in the car while driving. It only does it while driving when the throttle is just pushed down a bit, then goes away when pushed down further. it's wierd but whatever, it still hauls ***! ^^
Go to the end of the vid for the intake noise.My intake swap from stock to a bbk 80mm and TB w/ the volant cool air intake makes quite a noticable whistle. You can even hear it in the car while driving. It only does it while driving when the throttle is just pushed down a bit, then goes away when pushed down further. it's wierd but whatever, it still hauls ***! ^^
03-27-2009, 10:10 PM
#15
It is untuned but ya there seems to be a noticeable difference up top, I only took it wide open once though, my tuner said I should avoid it till I get it to him. I cant wait to get the duals and tune done, I know its gonna be a whole different car! Its definitely a must for any 98-00 fbody...
Ya you have a pretty loud whistle there, mine is less noticeable. You cant hear it in the car and you have to pop the hood to hear it, its probably my lid or the ported TB. But at this point I am done worrying about it, the car feels solid, idles perfect, and will sound badass after tomorrow!
Here check this vid out. http://www.youtube.com/watch?v=APjWipccRhE
Go to the end of the vid for the intake noise.My intake swap from stock to a bbk 80mm and TB w/ the volant cool air intake makes quite a noticable whistle. You can even hear it in the car while driving. It only does it while driving when the throttle is just pushed down a bit, then goes away when pushed down further. it's wierd but whatever, it still hauls ***! ^^
Go to the end of the vid for the intake noise.My intake swap from stock to a bbk 80mm and TB w/ the volant cool air intake makes quite a noticable whistle. You can even hear it in the car while driving. It only does it while driving when the throttle is just pushed down a bit, then goes away when pushed down further. it's wierd but whatever, it still hauls ***! ^^
