calvinPGMFI

Hey Fellow H-T's,

I have an build b16 with t3/60-1 turbo. Currently @ 7.4 psi @ 267whp. See my setup @ http://www.cjperformance.com

My tial wg has a 0.5 bar spring. But after looking @ my datalogs i see that 7500rpm> my boost creeps up to 8.1 psi.

-full-race manifold(prostreet).
-tial wg 44mm.
-My dumptube is besides my exhaust till after my block.(no exhaust gasses in my engine bay)
-3" downpipe
-2.5" exhaust
-Vacume hose comes from edelbrock mani to an 3 way spilt.
>1 going to my wastegate
>1 going to my bov(backdoor IC)
>1 going to a boost solenoid which is disconnected)

I can try to remove boost solenoid and then put a 2 way spillter just wg and bov.
But i like to hear comments what could be the problem

Thanks

CJ


Modified by calvinPGMFI at 6:02 PM 3/5/2006

calvinPGMFI

BUMP

g2turbo

I wouldnt worry about the small creep you are having as long as the car is tuned. What boost controller are you using?

calvinPGMFI

I'm coding one for p28/p38/p72. Just like H*nd*t* k-pro. clean and simple.
But with higher boost I have bigger creeps.

CJ

White Smoke

What you are explaining sounds pretty normal at low boost. Just tune for it up top, you wont have a problem.

But if you are having the exact same issue at higher boost you might have another issue.

Soccerking3000

yea even really large wastegates will have trouble with boost creep if you have a larger turbo thats on low psi since so much exhaust is diverted through it instead of the turbine.

MindEracer

iTrader: (1)

Calvin, That's a pretty normal creep for a setup like yours. I wouldn't worry to much about it. One more reason I'm not crazy about the wastegate placement of most of the turbo manifolds being used.

XES

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MindEracer &raquo;</TD></TR><TR><TD CLASS="quote">One more reason I'm not crazy about the wastegate placement of most of the turbo manifolds being used.</TD></TR></TABLE>

What would optimal placement be for a wastegate?

Adi Radoncic

With a ram horn manifold, the only way to totaly eliminate low boost creep is to run 1 really big gate or 2 gates, if there was an optimal wg placement on a ram horn manifold low boost creep on a efficient turbo setup wouldn't be a problem.

MindEracer

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by XES &raquo;</TD></TR><TR><TD CLASS="quote">What would optimal placement be for a wastegate?</TD></TR></TABLE>
As explained above.. I love your lude..

I don't wan't to jack Calvin's thread, but here is a short thread on the subject of ram horn vs sidewinder wastegate placement: http://forums.evans-tuning.com...ight=


Modified by MindEracer at 1:23 AM 3/6/2006

calvinPGMFI

thanks.
Iwill test @ higher boost levels.

CJ