incubuseva

iTrader: (13)

So I have a basically stock S5 jspec that I just put in. After running around in it for a good long while I gave it some gas. I hit 14 psi! Is this boost creep or is this what the stock motor is supposed to do? I'm guessing this is also a good way to make it go pop.

nitronatefc

iTrader: (2)

A stock S5 boosts around 8psi, maybe 9

So what does "basically stock" mean? Obviously this is the source of your problem.

incubuseva

iTrader: (13)

Intake and catback. That's the not stock part. I may have left a hose unconnected? But I dunno yet.

maac0953

well a restricted exhaust is what keeps the boost at that constant stock boost.
5.5lbs for s4 and 8lbs for s5 TII's

since you have a free flowing exhaust now you freed up the restriction and now your over boosting. have fun running LEAN

buy a walbro 255, that should help some. and a wideband.

RotaryRocket88

iTrader: (7)

Port the wastegate. Anything else is ignoring the problem. In my experience, a catback is usually not enough to cause boost creep, but a new intake is. The stock intake is very restrictive on TIIs.

MMoore4545

iTrader: (7)

port your wastegate,
or
get a new manifold
an external wastegate
and a boost controller.

http://fc3spro.com/TECH/HOWTO/KWG/kwg.html

rotaryat16

Get a boost controller and just turn the boost down...

Do u have a fuel cut defencer??

If u run that open u will pop!!

MMoore4545

iTrader: (7)

A boost controller won't address the issue. it may help a little.
The issue is, that the internal wastegate can't bleed off the exhaust.
It's a physical limitation.
The only real way to limit the power that's produced by the turbo is to port the wastegate.

1SWEET7

iTrader: (1)

Yeah boost controllers cannot lower boost. Port your wastegate out or you could end up blowing your engine. Here is a pic of what my stock S4 wastegate unported and ported looks like. Notice how small the stock hole is.

incubuseva

iTrader: (13)

Heh so I'm a ****. When I took off my turbo to port it (never got around to it) I forgot to hook up that vac line right by the intake of the turbo. So basically I was running at full boost. Luckily I didn't go too crazy but I got close. I have a buddy who blew at 15psi and I hit 14... Lesson learned. I will port the waste gate soon and get a boost controller. First thing I did was get an fbcd. I have an extra too.