boosted414

iTrader: (30)

So im tired of reading thru search posts so im going to post it here.

Car Specs:
Rtek 1.7, downpipe, no cats, apexi n1 exhaust. greddy FMIC. HKS BOV. 550 primaries/680 secondaries (i didnt do it). Emissions all removed.

No boost leaks, ive pressure tested the engine and it holds.

Car boosts to 5psi with the wastegate plugged into a source. (Same source as the boost sensor and aftermarket guage).

I unplug the sensor and cap the line, it boosts well beyond that (i get out of the gas before she blows).

Any thoughts?

arghx

iTrader: (3)

What exactly are you trying to do?

RotaryRocket88

iTrader: (7)

So you're seeing 5psi of boost on what is roughly a 5.5psi spring, then seeing much more boost when you unplug the line to the wastegate. I don't see any problem with that. It's what you'd expect.

boosted414

iTrader: (30)

get up to 12psi. but im probably needing a boost controller

RotaryRocket88

iTrader: (7)

Well, yeah. Stock is ~5-6 psi. Before cranking the boost level up, be sure you have something better than the stock fuel pump as well.

boosted414

iTrader: (30)

ya ive got a walbro in it. who runs without one these days? i mean come on.

Hypertek

iTrader: (3)

boost controller my friend. when i first got my car, similar setup to yours, but somethign was off, i was seeing almost 1 bar boost.. then i must have did something and now see stock boost. so yeah cant really expect to see more boost because of the exhaust/intake, tho i remember reading somewhere that it typically does raise it. I dunno.

you got a fmic with stock turbo, lemme know how it works out for you with upping the boost.

boosted414

iTrader: (30)

knew it. damnit. but it pulls like a truck with the wastegate not connected

RotaryRocket88

iTrader: (7)

Oh, you would be surprised how many people kill their engine with the stock pump.

Doubling the boost level yields some huge power gains. It's lots more fun than stock. But I wouldn't continue driving it with the wastegate line off. You can easily creep up to 15-20 psi, send the intake temps way up, and pop the engine. The rtek 1.7, walbro & FMIC won't save it at that point. The stock turbo becomes wildly inefficient at excessive boost levels.