wastegate adjustment - Subaru WRX Forum
 
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post #1 of 8 Old 10-13-2009, 01:19 PM Thread Starter
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wastegate adjustment

ok, so i wasnt hittin much boost due to the wastegate arm was long so i adjusted and am hittin 20 psi now. im at stage 4 wit b16g and 3 port BCS. my question is i wanna save gas so im just gonna lengthen the arm again. will i need to keep gettin retuned eveytime i lower(save gas) and up(race, lol) the pressure?

quick question, also will a fuel pressure regulator let me spit less fuel ### im runnin 800cc+ injectors and they spit soooooooooooooo much gas out.
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post #2 of 8 Old 10-14-2009, 11:37 AM
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Leave your wastegate actuator alone. That is not how you adjust the boost levels on these cars. And your 800cc injectors are not "spitting out" any more gas than the stock 440cc ones when your cruising. Your right foot controls the gas mileage. Try running more tire pressure.

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post #3 of 8 Old 10-15-2009, 11:11 AM Thread Starter
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ok i feel stupid, thanks a lot man. almost bought an adjustable fuel reg.

btw i heard about nitrogen in tires, how is that better
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post #4 of 8 Old 10-15-2009, 04:36 PM
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Nitrogen gas does not expand and contract as much as ordinary air (which is 80% nitrogen and 20% oxygen).

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post #5 of 8 Old 10-15-2009, 05:42 PM
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So unless the tires are completely purged before putting the nitrogen in, you are wasting time and money.

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post #6 of 8 Old 10-16-2009, 10:07 AM Thread Starter
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o ok, guess ill hav to deflate them. just got new tires all around and i rather throw some some nitrogen in them. thanks guys
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post #7 of 8 Old 10-16-2009, 12:21 PM
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Maybe this is the same thing as expand and contract, but also aren't the nitrogen atoms bigger so they are less likely to escape out of the tire?
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post #8 of 8 Old 10-16-2009, 01:45 PM
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Yes, very true. At my work we have a nitrogen concentrator to fill ambulance tires. I've since filled every friend or family's tires with it, for over a year now and nobody has had to add air cause it doesn't leak as easily as O2. I had a 96 Cougar with the cheapest tires Firestone could provide and they would squeal at 40 mph on a clover leaf. After adding nitrogen at the same pressure and same clover leaf entrance they would squeal at 53 mph. That was enough for me to always put nitrogen in my tires.
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