no boost from 1st turbo but 2nd turbo is working fine ??
 

hey guys
i'm having a problem i'm not having any boost from the 1st turbo but 2nd turbo seems to work just fine pulling from 4500rpm and above (i still have the sequential system)
i've install a new rad a blitz fmic and replace all the vaccum hose for some new ones and ported the wastegate and also a avc-r ... anyone have similiar problem ?
before i had those parts in the car i had no problems with the turbos
what could it be ?
it's driving me crazy...

You've got one of your boost lines hooked up wrong. I also doubt your first turbo isn't working period. It probably is only coming on line after 4500 rpm. Re-check the AVCR install. You probably have it set for parallel (single) operation and its only letting the turbos spool after 4500 rpm. You can search the archives in the third gen section to find a vacuum diagram to help.

i've check all the vacum hoses and no luck everything looked fine...
also the 1st turbo from 2500rpm to 4500rpm only spools 0.18/0.20bar insted of the 0.85bar set in the avc-r and the 2nd turbo spools fine

Claudio, you posted this in the wrong section. You should have posted it in the 3rd gen section man ;)

Claudio, does it sound a bit different ? (i.e. louder)

the 1st turbo ?

He probably means your exhaust note.

You never PMed me back, dude ;)