i just installed my defi d boost gauge today and when the car is at idle the needle sits at 20 and when i get on the throttle the needle spikes to 20psi and then goes down and stays at around 15 psi is this normal? My car is completly bone stock. i know i could prob search and find the answer but can some one just say if this is normal or not.

 

yup its normal...

 

15 seems a lil low but not bad

 

ye its suppose to taper down when going to redline

 

ok thanks guys i thought i installed it wrong but guess not