Have a saab t3 which i want to put on d16z6, engine is stock at the moment got a t25 on there at mo and boost does'nt last til the redline so want to go bigger for dragging etc!!! My questions are do u know when i will start to boost and when im likely to hit full boost? wanting to hit about 9-10psi have 2.5" downpipe! also it has an stock saab external wastegate anyone know what they are set at? Also the wastegate has 2 vacuum lines coming off of it, i thought they only needed 1 could it be a recirculating wastegate? anyhelp greatly appreciated! have already searched but with no luck

 

what are you smoking, t25's boost wont fall off on your 1.6 motor at low-ish boost

 

well it stops boosting at 6000rpm and it wont make more than 0.5 bar no matter how much i try to make it boost more and besides that i heard that t3 are better for dragging

 

you got issues cuz I had 15psi to redline on my b18b

 

any ideas what it could be? using dsm 450's and apexi vafc! probably little rich and i know the exhaust after downpipe is a little on the small side! and the intercooler is off a saab using 2'25 pipeing! dude thanks for your input so far very appreciated! only dragged the car once and times whack so i need better

 

Check for ANY exhaust leaks on the turbo turbine side at wastegate and check for exhaust leaks anywhere on the turbo manifold, check exhaust leaks at the flange between the turbo and manifold, check for exhaust leaks from the manifold and the head.

Exhaust leaks are usaly easy to find in these areas because it will have black soot trails at the leaks, Leaks can prevent your turbo from spooling like you say.

Another thing. Check ALL vacumelines, or just replace them all (only like $2-3 at autozone for new lines...) Check all chargepipe's for holes or places for boost leaks, Check all Couplings holding the chargepipes to oneanother, If you have to, take all your charges pipes off, reinstall them being VERY carful making sure you are air tight, and on your coupling clamps, tighting them like you havent gottin laid in 6 week's haha. But dont "break them"

I had a 14b on a d16z6 (not the same but similar) and it held boost VERY well to revlimit.

T3's would be a nice upgrade for you for sure and would make more power im sure too. But if you tuned your setup and had everything right. You should be more than happy with your setup.

When my car wasnt running right, i installed the turbo kit and went strait to teh track. I had boost leaks, tunning problems... you name it i had it. I ran 13.9 @ 102 on 7psi w/ a 1/4 tank of gas and just a front seat in the car. After i tuned the a/f's & timing, Fixed the boost leaks had it running correctly. on 7.9psi I ran 12.7 @ 110 with full tank of gas & full interior. Just hoping that can show how big of a differnce between something that isnt right and something taht is..

Good Luck to u tho and use the search button correctly. You can sellect to search Recent content or.. Archived content Try the archived. More than enough info in there to keep you reading for months lol

 

thanks for the input dude gonna definately give it a try!

 

any other ideas or comments

 

yea it sounds like you have a boost or vacuum leak if you keep turning up the boost and it does nothing. I've heard that t25's are pretty notorious though for losing a couple pounds of boost around 6000rpms. I don't see why you wouldn't be able to turn the boost up more though....

 

i can run without wastegate and still nothing

 

check your wastgate. Could be cracked, or this happened to my dad''s old 14B, it actually moved over a little bit (worn out) and was always exposing a little bit of the hole open at all time and it wouldn't let the turbo boost hardly at all. Didn't know what was going on until we upgraded to his 16g.

 

will check this out aswell thanks for the input