Thread: Just got a GTP, have a few questions for the experts

Someone correct me if I'm wrong, but you may also want to find an LS1 or Northstar throttle body. I've noticed in many videos and read, without it the CAI creates an annoying whistling noise at idle. That's the only reason I haven't done a custom CAI yet myself. I know that whistle would drive me nuts. But the TB also supposedly provides a slight boost to low end power i think.

Also can someone tell me... do those just bolt right into place with no modification?

Originally Posted by J GTP

Someone correct me if I'm wrong, but you may also want to find an LS1 or Northstar throttle body. I've noticed in many videos and read, without it the CAI creates an annoying whistling noise at idle. That's the only reason I haven't done a custom CAI yet myself. I know that whistle would drive me nuts. But the TB also supposedly provides a slight boost to low end power i think.

Also can someone tell me... do those just bolt right into place with no modification?

No, you won't need a larger throttle body until you are very modded. And about the intake...What????? All intake create a whistle effect, supercharged or N/A. You hear the motor more. It is out IAC that makes a "shovel dragging on concrete sound" at idle. I'm still lost at what whistle your talking about. That is a supercharger that whistles. And you think making the throttle body BIGGER would get rid of the sound? Hardly. It makes it more pronounced IMO. As for the "bolt right in place with no modifications"...start another thread.