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Power FC boost and fuel cut off help!

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Old Jul 24, 2002 | 12:07 PM
  #1  
ZeroBanger's Avatar
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From: Buckhead
Power FC boost and fuel cut off help!

Ok, I will try to detail as closely as possible. On my Power FC under boost settings it has program 1 and 2. Lets use program 2.

It has a line for primary turbo and secondary turbo. next to that is a number you can set which is a pct? it ranges from like 80 to 95 and increments in 5's. then to the right is another number than increments in 2's. I was told that the one that increments in 5's is the fuel cut off and the other is boost.

Now with that said, lets pretend the above is correct and I have my boost set at .72, does that not mean .72 * 14.7=10.58 lbs of boost that should be running? It doesn't seem to coorespond to my boost gauge. Also, I can have my pimary and secondary set the exact same and my secondary turbo seems to always have higher boost according to my gauge. The other thing is, If I want to cut my fuel at 12.5 so I am safe if it spikes past that, how do I do that?

I know this must sound stupid, but I am going to the track tonite and dont want to pop my motor! Thanks so much!
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Old Jul 26, 2002 | 04:07 AM
  #2  
jspecracer7's Avatar
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From: Where there's only two seasons, hot and wet! I love Okinawa
Re: Power FC boost and fuel cut off help!

Originally posted by ZeroBanger
Ok, I will try to detail as closely as possible. On my Power FC under boost settings it has program 1 and 2. Lets use program 2.

It has a line for primary turbo and secondary turbo. next to that is a number you can set which is a pct? it ranges from like 80 to 95 and increments in 5's. then to the right is another number than increments in 2's. I was told that the one that increments in 5's is the fuel cut off and the other is boost.

Now with that said, lets pretend the above is correct and I have my boost set at .72, does that not mean .72 * 14.7=10.58 lbs of boost that should be running? It doesn't seem to coorespond to my boost gauge. Also, I can have my pimary and secondary set the exact same and my secondary turbo seems to always have higher boost according to my gauge. The other thing is, If I want to cut my fuel at 12.5 so I am safe if it spikes past that, how do I do that?

I know this must sound stupid, but I am going to the track tonite and dont want to pop my motor! Thanks so much!
The .72 is 72%. It means that the boost controller will hold down the wastegate actuator more. Higher on this means higher boost. If you up this and do not up your boost cut off, you will hit boost cut.

What I would do is set your boost cut to the desired amount. Then start turning your % up until you get the desired boost(remember, this is sometimes dependent on load...3rd gear runs is what I use, but you should try 4th gear runs since you have more road than us guys in Okinawa).

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