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Old 09-18-2007, 04:34 AM   #1
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Default safe to turn up the boost up?

set up is
1.8 injectores (tan)
12:1 greddy fmu
intercooled

is that ok to tighten the wastegate so i can get 6 or 7 psi
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Old 09-18-2007, 09:31 AM   #2
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What octane gas do you have available in Guam? If it's 94+, I think you'll be all right at 7psi... but don't push more than that. You've got the timing down at 6* right? Your next 2 steps to turning up the boost are a timing management device (Bipes) and a fuel pump.

Somebody else can do the math, but w/ 12:1 and 1.8's I think you're probably pretty rich. What kind of mileage are you getting?
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Old 09-18-2007, 09:35 AM   #3
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Given stock pump he is probably running like 330's so not alot of waste going on there. Mike the main deal breaker and motor breaker here is detonation if you do turn it up then drive it and listen carefully for abit to make sure that you aren't slamming little holes into your pistons. If it isn't knocking then the boost level is most likely fine for general use. There is no cut and dry formula for boost levels we can run just vague guide lines as you most likely have seen.
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Old 09-18-2007, 10:26 AM   #4
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with the stock pump, you're best to make 160rwhp out of the setup. What boost that ends you up at probably closer to 7-8psi.
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Old 09-18-2007, 11:15 AM   #5
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Get a fuel pressure gauge and squeeze the return line completely closed and that will tell you the max fuel pressure your stock pump is delivering. My car only had about 30K on it but my stock pump was not very strong at all. Walbro 190s really aren't very expensive and the install is surprisingly easy.
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Old 09-18-2007, 11:25 PM   #6
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i post that up wrong ..
that set up is everything i got but its not on the car yet i was just asking because after i install this setup and brake it in i was gonna turn up the boost on drag nights so i was asking if it was gonna be safe...i wanted to say this because the replys i got are people thinking this is on my car already..thanks for all the help tho.. i will look into the gas octane we have here in guam ..and for the record im the only turbo miata here ..the other one is jackson supercharged
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Old 09-19-2007, 12:24 PM   #7
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For just running the strip you should be fine but you still need to follow my advice regardless.
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