i recently had my nitrous kit installed on my car, NOS 150 shot. i have dual open cutouts too, so you can imagine how loud it is. after my first time spraying the car, i started to hear a high pitched flutter when i left off the gas. car seems to run fine other then that noise it makes now. what do you guys think it could be?

 

no one has had a problem like this?

 

hard to understand what your describing. Does the sound change with rpm or go away?

 

when i have my foot on the gas it goes away, its only when i let off the gas. its the vaccum pressure leaving the exhaust i guess, but its high pitched now.... dont know any better way to explain it.

 

no one else????

 

can you hear the sound under the hood or just behind the car when its idleing?

 

its through the cutouts. cant hear it in the motor at all. and its not at idle. ill tach it up to around 2k rpms and let my foot off the gas and then i can hear it through the cutouts.

 

Sean,
My best thought is that the noise is caused by the new sparkplugs you put in,a colder plug will cause the fuel to burn in the cylinder at a different rate and could be causing a change in tone in the exhaust

 

seriuosly, why didnt you tell me that before.... you have no idea how much better i feel. i thought i messed something up man. hey is brian gonna be at the shop on sunday?

 

i seem to have experienced this as well. on the down rev i get a lot of high pitched little backfires, as compared to before having TR6's.

 

i never thought of that.... really didnt know the spark plugs made that big of a difference for exhaust note. glad to know its that though.

 

you never asked me.Brian is going to at the shop on sunday

 

Interesting.

 

i was just kidding....