Hey i got the N75j valve today and it sits different then my old one. I know the longest of the sides goes down in the intake pipe, but what about the other 2.....can I have it on wrong?I am boosting to about 16-17..and still falling off in higher rpms...i see that one of the smaller ones is bigger then the other..which ones goes to the wastegate, and which one goes to the turbo...It seems with my other valve that it would boost higher, but would fall off as fast(maybe and n75h?like 18psi) Can some please tell me if I could have it in wrong, and should I reset the computer for a certain amount of time.
thanks!

 

Bump...Help!

 

you have a k03 still I'm assuming - so yeah its going to fall off in the higher RPM's - thats what the k03 does. As for the H vs J - not sure exactly why your not boosting as high or dropping off faster. Sounds like its time for a turbo upgrade

 

Yeah my other valve would boost higher, but fall off faster....im going to but a mbc on today and see what happens. I can either do everything with a k04, or a gt28rs

 

MORE HELP PLEASE!!!

 

your boost will fall off no matter what valve you have in there. the ko3 simply cannot flow enought air as the engine is sucking in at high rpms so the boost will always fall off.

 

But falls off before 5k? that ok? In 3rd, and 4th gear it holds a lot longer...
seems that the j valve makes the boost hold higher, but the other valve seems to be a little more aggressive...

 

yes it will fall off after 5k. thats the down side of a small turbo. the up side is you have very fast boost. big turbos lag but will hold better to redline

 

But Should it be droppingbefore 5k??

 

i dont remember what it drops off exactly but maybe you have a boost leak