Hey i have a 98 a4 with the giac chip, n75j, k&n filter, and forge dv valve. When i get on it in first it hits about 10psi, 2nd it goes to about 15psi and falls off(sometimes fast), and in 3rd it goes up to about 18, and then falls off again......what do you all think?
thanks!

 

small turbo running out of breath. get a larger turbo and that wont happen

 

what are the k03 suppost to fall off to with the giac chip?
Should It hold about 14.7 psi because of the chip?
thanks!

 

No it doesn hold 14.7 because of the chip. The K03 can only push so much air and at high RMP it runs out of breath.

 

Yes, they are a small turbo having said that tho, if there is any restrictions in your intake then that will make the boost drop off quicker at high rpms

 

Like what kind of restriction?

 

cloged filter

 

New filter and everything.....where is the best place for the boost gauge to hook up? thanks

 

Also open up your Forge DV and see what spring you are running. Too weak of a spring could have a detrimental effect. Despite what all those guys say, I have a 99 with a GIAC and I peak at 21 psi and it holds it for a good 1.5k RPM before slowly dropping off.

 

I have the yellow spring in now, and yeah thats the same with me.....it will go to about to 16 in 2nd and then fall off, and then in third i will go to about 20 or so, then it will fall off also.
how far does it fall of to....