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Old 11-06-2014, 12:21 AM   #1
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Default FM voodoo box+saab 9-5 turbo how much boost possible?

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!
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Old 11-06-2014, 12:23 AM   #2
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all of it
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Old 11-06-2014, 12:53 AM   #3
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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.
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Old 11-06-2014, 12:53 AM   #4
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all of it
? ..what does that mean?
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Old 11-06-2014, 12:54 AM   #5
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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.
I already retarded my timing with my cam sensor (easy on a 90-93)
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Old 11-06-2014, 12:59 AM   #6
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? ..what does that mean?
It means "wastegate?!? You don't need to stinkin wastegate!"
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Old 11-06-2014, 01:07 AM   #7
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It means "wastegate?!? You don't need to stinkin wastegate!"
... whats the point with the wastegate?? The problem is the limit of the stock injectors+the voodoo box.
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Old 11-06-2014, 01:09 AM   #8
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I was talking about the comment "all of it", I did not get it
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Old 11-06-2014, 01:12 AM   #9
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"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".
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Old 11-06-2014, 01:27 AM   #10
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"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".
If i do that I'll be running way to lean.. Why does nobody like voodoo boxes? Whats so bad about it?
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Old 11-06-2014, 05:20 AM   #11
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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.
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Old 11-06-2014, 09:12 AM   #12
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MOORE.
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Old 11-06-2014, 09:24 AM   #13
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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.
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Old 11-06-2014, 10:03 AM   #14
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Probably all of it. Most definitely some of it.
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Old 11-06-2014, 10:12 AM   #15
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Quote:
Originally Posted by Mangezmoer View Post
If i do that I'll be running way to lean.. Why does nobody like voodoo boxes? Whats so bad about it?
You're gonna have to stop being so dumb real soon if you want to enjoy your stay here.
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Old 11-06-2014, 08:01 PM   #16
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Quote:
Originally Posted by Spinout007 View Post
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.
Hahaha great
I'll give you news about my results then
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Old 11-06-2014, 09:45 PM   #17
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Philippe, are you a native English speaker?

Also: ASK FM, DAMMIT. it's their product. ask them what's safe to do with it.
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Old 11-06-2014, 09:51 PM   #18
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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.
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Old 11-06-2014, 09:57 PM   #19
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Well, boost is boost right? Stock injectors, trubo, all of it.
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Old 11-06-2014, 09:59 PM   #20
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Quote:
Originally Posted by turbofan View Post
Well, boost is boost right? Stock injectors, trubo, all of it.
Well done!

Miata.net/10
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