91siBoost

i have a 91 Si stock D16A6 (rebuilt less than 15k miles ago), saab t3 (tb0357)internal wastegate 57 trim, 92 Talon side mount intercooler, SSQ Bov, HKS EVC, Apex'i S-AFC, boost meter, a/f meter,
pressure tested system from compressor inlet to throttle body holds 25psi no leaks w/car off. BOV holds fine. drive the car u can hear it spool up and the blow off valve release. but u cannot feel any power and boost guage doesn't go past 2psi. any help, suggestions please. can seem to figure this one out!!?

Robert Padron

Maybe your wastegate isn't fully shut and lets exhaust get out, causing it to only spool upto 2psi. That has to be it, check that.

91siBoost

why would it spool up? also when i do a manual psi test on it i can watch my waste gate open and close.

91siBoost

i see maybe ur sayin it isnt closing all the way! i'll check that! i hope thats it man! i been working on this thing for like 6 months i wanna drive it now ya know!!

thanx-

R1ce

yea i was having the same problem, but bad wastegate so check that first.

and you said you can see your wastegate flap? when your exhaust is off right? lol just checking

hellakapps

did you get it figured out? i'd say wastegate also!!!!

'94civic b16

did you put the fire ring in when you installed the wastegate?

sohczcturbo

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ’94civic b16 &raquo;</TD></TR><TR><TD CLASS="quote">did you put the fire ring in when you installed the wastegate?</TD></TR></TABLE>
saab t3 turbo buddy... incase you didn't know, internal waste gated. Hence all the talk about the "flap".

Nother for the waste gate flap out of adjustment

91siBoost

fire ring? wtf anyhoo the WG rod is adjustable so i tightened it all the way down an i GOT 4 Psi!!!! so i think the WG is bad or weak spring, gonna look into it some more today!! thanx every one for the help!?

HiProfile

I'm surprised nobody caught the fact you're running an electronic boost controller with an internal WG. You need a wastegate with ports on both sides of the diaphragm, and your Saab WG only has one.

Also if all you're using is the Apexi for tuning, I'd suggest you stop right now. W/o even using a wideband o2 sensor to check your air/fuel ratio, you could be going VERY lean, which is an easy way to toast a motor. 2-4 psi can be dealt with using the S-AFC, but beyond that and you have issues running WAY too much timing. If you aren't using good 93 octane gas and whatnot, your motor could be detonating right now, meaning its making LESS power with 4psi than it could be NA.

splitime

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HiProfile &raquo;</TD></TR><TR><TD CLASS="quote">I'm surprised nobody caught the fact you're running an electronic boost controller with an internal WG. You need a wastegate with ports on both sides of the diaphragm, and your Saab WG only has one.
</TD></TR></TABLE>

I'm unsure about the EVC... but the AVCR I had you can setup for internally wastegated setups. It just bleeds like a MBC instead of allowing boost into a 2nd port and equalizing/pressurizing.

ryan89crx

exhaust leak pre-turbo?

my guess would be WG issue though...

91siBoost

no exaust leaks, my evc does single port and dual port, any info on fuel management is much appreciated since my afc wont be enough? also Wide band coming soon! someone told me maybe the spring in my WG is too weak is this true. this is my first turbo kit and i made it (water leak tested everything i made).
please help !?

91siBoost

what do u recommend for an actuator?