Yea I removed the p2r and the whistle went away. Then I tightened the plug for the nitrous a bit more on the tbs and it reduced the whistle. The gasket doesn't seem to be the correct shape but it does the job i guess if everyone else says thats its normal, and its more part throttle than low...
I just installed my P2R throttle body spacer as well as the Injen CAI on my 2012 4dr si. At low rpms there is a high pitch whistle that goes away as the rpms increase. It seems to only happen when I give it full throttle. Any ideas on why this is happening. I'm thinking its maybe a small leak...
Yeah I like it...... it has a nice sound to it, not farty. More of a smooth sound. Im not planning on boosting anytime soon so the 2.5 inch was perfect for me. Def was expensive but you get what you pay for, I'm satisfied with it.
I need some help from my Si brethren. I am looking to get the FlashPro but would like some feedback before i drop the $690. I have the MagnaFlow 2.5 inch full exhaust and Resonator delete with k&n drop in, nothing fancy but I want the flashpro mainly for the rev hang issue (**** has been driving...