Mangezmoer

Hi,
I am waiting for my voodoo box (will hopefully arrive tomorrow) and I was wondering how much boost could I put until the stock injectors wont deliver enough fuel for a safe ratio.

Everything is stock
Saab 9-5 turbocharger

I am expecting to run about 8psi, is that reasonable?

Please no free bashing on voodoo box, I know its not the best but I am building a very cheap setup and I dont expect miracles, juste wanna get the best I can out of it.

Thanks!

18psi

iTrader: (76)

all of it

thirdgen

iTrader: (26)

I have no idea the size of a Saab 9-5 turbo, but 8 psi? You might be running just over the max for it. The only way you'll know is by monitoring AFR's.
Voo-doo boxes don't control timing cause that's not important.
Correct plugs and gaps mean everything.

Mangezmoer

? ..what does that mean?

Mangezmoer

I already retarded my timing with my cam sensor (easy on a 90-93)

thirdgen

iTrader: (26)

It means "wastegate?!? You don't need to stinkin wastegate!"

Mangezmoer

... whats the point with the wastegate?? The problem is the limit of the stock injectors+the voodoo box.

Mangezmoer

I was talking about the comment "all of it", I did not get it

thirdgen

iTrader: (26)

"All of it" means take your wastegate off. The turbo will spool until it can't make any more boost. It's known to voo doo users as "the safety range".

Mangezmoer

If i do that I'll be running way to lean.. Why does nobody like voodoo boxes? Whats so bad about it?

Spinout007

iTrader: (2)

All of it means it will take all of it till it blows. My .02, take it for what it's worth from a lurker. Just so you feel better I am considering a similar setup for my wife's car, but limited to 6 psi with a charge cooler just to be safe. She wants a little more umph, but her driving already scares the crap out of me when she gets pissed.

OGRacing

iTrader: (1)

MOORE.

Leafy

iTrader: (1)

It should use the same compressor map as this turbo but with a smaller exhaust side. Products | Turbochargers So toss that into your boost plot spread sheet and throw some numbers at it with your engine and see what you come up with. Just keep the air flow under ~14lb/min which is about the limit of the 1.6 injectors at stock fuel pressure.

concealer404

iTrader: (3)

Probably all of it. Most definitely some of it.

18psi

iTrader: (76)

You're gonna have to stop being so dumb real soon if you want to enjoy your stay here.

Mangezmoer

Hahaha great
I'll give you news about my results then

turbofan

iTrader: (1)

Philippe, are you a native English speaker?

Also: ASK FM, DAMMIT. it's their product. ask them what's safe to do with it.

concealer404

iTrader: (3)

Oh yeah I want to hear Jeremy's reply when asked how much boost you can run on a Voodoo behind a hodgepodge of non-FM parts that they don't have experience with.

turbofan

iTrader: (1)

Well, boost is boost right? Stock injectors, trubo, all of it.

concealer404

iTrader: (3)

Well done!

Miata.net/10