Well now that I finally have my car running right, I am having major boost creep issues.

9.0:1 B16, T61 HO, Synapse ramhorn, 3" downpipe, 3" exhaust, Tial 38mm WG

I am trying to run 12 psi but I can not get it to hold it at all. It creeps to like 15-16 psi and then I get scared and let off because I don't want to blow my motor.

I'm thinking that the Tial 38mm is too small for how big my turbo is? How do I resolve this? My manifold is flanged for a 38mm, do I just cut it off and weld on a flange for a 44mm or something?

What about the Synapse WG, it's 40mm, maybe it will work?

 

Any pics of the wastegate hole on the manifold ?

 

Nope, but it looks like every other ram horn from a decent company, it's all ported too, no ching chong meow here.

 

Larger turbine wheels generally need a larger wastegate for lower boost levels. I would switch to a 44mm if you plan on running those boost levels

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alpha &raquo;</TD></TR><TR><TD CLASS="quote">Larger turbine wheels generally need a larger wastegate for lower boost levels. I would switch to a 44mm if you plan on running those boost levels</TD></TR></TABLE>

Yeah but how do I go about switching to a 44mm? Do I cut the flange off my manifold and have a new one welded on?

 

Yes.

You will obviously need a new dump tube as well.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GetawayInMoscow &raquo;</TD></TR><TR><TD CLASS="quote">

Yeah but how do I go about switching to a 44mm? Do I cut the flange off my manifold and have a new one welded on?</TD></TR></TABLE>

if you want, send it back well throw a 44mm flange on there free of charge.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike@synapse motorsport &raquo;</TD></TR><TR><TD CLASS="quote">

if you want, send it back well throw a 44mm flange on there free of charge.</TD></TR></TABLE>

Damn that's what customer service is all about.

PM me the address and I will FedEx it this week!

 

what WG spring were you using

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony413 &raquo;</TD></TR><TR><TD CLASS="quote">what WG spring were you using </TD></TR></TABLE>

The million dollar question!

 

0.5 BAR

 

have you tried using a .7 spring and what boost controller hopefully not a MBC

 

No, why would a different spring help?

I'm using an AVC-R...

 

your spring maybe to "weak" causing your WG to prematurely engage

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GetawayInMoscow &raquo;</TD></TR><TR><TD CLASS="quote">No, why would a different spring help?

I'm using an AVC-R...</TD></TR></TABLE>

I'm having a very similar issue. .6bar spring, AVC-R is turned off, I'm creeping to anywhere between 12-15psi.

38mm Tial with CCfab ported ramhorn.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony413 &raquo;</TD></TR><TR><TD CLASS="quote">your spring maybe to "weak" causing your WG to prematurely engage</TD></TR></TABLE>

Sooo you're telling me that we're creeping because our WGs are opening too... early?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SovXietday &raquo;</TD></TR><TR><TD CLASS="quote">

Sooo you're telling me that we're creeping because our WGs are opening too... early?

</TD></TR></TABLE>

maybe i should reword that

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike@synapse motorsport &raquo;</TD></TR><TR><TD CLASS="quote">

if you want, send it back well throw a 44mm flange on there free of charge.</TD></TR></TABLE>

Didn't hesitate one bit and thats what customer service is all about. I may just get your manifold now. Do you make a ramhorn for a civic/crx? PM me

 

do you have a boost pressure chart? or datalogg. does the wastegate open at around 12psi then slowly go to 15 at the upper rpms, or does it go right to 15-16.

have you taken the boost controller out and seen how much boost it makes on the spring alone?

 

im 100% sure it's not a wastegate issue. its a AVCR issue......

i had a manual controller with the 38mm gate and it was no problem. switched to the AVCR and it creeps uncontrollably over 6500rpm all the time. no matter what settings are used.

switched back to the manual controller....no problem!

the AVCR works OK on some setups but not all.......good luck.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by non-VTEC &raquo;</TD></TR><TR><TD CLASS="quote">im 100% sure it's not a wastegate issue. its a AVCR issue......

i had a manual controller with the 38mm gate and it was no problem. switched to the AVCR and it creeps uncontrollably over 6500rpm all the time. no matter what settings are used.

switched back to the manual controller....no problem!

the AVCR works OK on some setups but not all.......good luck.

</TD></TR></TABLE>

I'm 100% sure it's not. I know how to use an AVC-R, unlike 95% of the people out there who are too lazy to read the instructions and think logically.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike@synapse motorsport &raquo;</TD></TR><TR><TD CLASS="quote">do you have a boost pressure chart? or datalogg. does the wastegate open at around 12psi then slowly go to 15 at the upper rpms, or does it go right to 15-16.

have you taken the boost controller out and seen how much boost it makes on the spring alone?</TD></TR></TABLE>

Yeah I tried w/o the boost controller, still the same ****. I don't have any datalogs saved in Neptune but I will take some and post up the results.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GetawayInMoscow &raquo;</TD></TR><TR><TD CLASS="quote">

I'm 100% sure it's not. I know how to use an AVC-R, unlike 95% of the people out there who are too lazy to read the instructions and think logically.

Yeah I tried w/o the boost controller, still the same ****. I don't have any datalogs saved in Neptune but I will take some and post up the results.</TD></TR></TABLE>

pm sent

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GetawayInMoscow &raquo;</TD></TR><TR><TD CLASS="quote">What about the Synapse WG, it's 40mm, maybe it will work?</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GetawayInMoscow &raquo;</TD></TR><TR><TD CLASS="quote">What about the Synapse WG, it's 40mm, maybe it will work?</TD></TR></TABLE>





We have a customer that had a 38 mm Turbosmart on his turbo S2000 making about 470hp with a 14 psi spring that would go to 22 psi. He put the Synapse 40mm WG on and with the lowest setting, he was getting 11 psi and 22 psi at the highest setting with no pre-load adjustment and the largest valve seat. Absolutely no creep according to the tuner in VA.

I know that it isn't a Tial WG that was on there, but all the same, it is just another legacy diaphragm wastegate in the 38 mm size. No diaphragms on the Synapse WG.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Synapse &raquo;</TD></TR><TR><TD CLASS="quote">
I know that it isn't a Tial WG that was on there, but all the same, it is just another legacy diaphragm wastegate in the 38 mm size. No diaphragms on the Synapse WG.
</TD></TR></TABLE>
hey...i need the address for china, i fried all 4 0-rings in your wastegate, does china warranty these?

 

buwhahaha