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post #1 of 5 Old 06-22-2009, 12:23 PM Thread Starter
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tuning question with boost

I have been monkeying with the tune in my car for the past couple of weeks. The WOT tune is dead on and some of the low loads/ part throttle tuning.

Now when I am in part throttle and hit 10psi @3500rpm (my max boost) I am seeing 14.5-14.7 is this safe? Again, at wide open throttle hitting max boost I am showing 11.5 so that is pretty much dead on.

The car doesn't ping or anything. I am probably just over thinking this.

But I am assuming 10psi is 10psi right?

Any Ideas?


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post #2 of 5 Old 06-22-2009, 12:37 PM
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Originally Posted by forbanger View Post
I have been monkeying with the tune in my car for the past couple of weeks. The WOT tune is dead on and some of the low loads/ part throttle tuning.

Now when I am in part throttle and hit 10psi @3500rpm (my max boost) I am seeing 14.5-14.7 is this safe? Again, at wide open throttle hitting max boost I am showing 11.5 so that is pretty much dead on.

The car doesn't ping or anything. I am probably just over thinking this.

But I am assuming 10psi is 10psi right?

Any Ideas?
Hell no it's not safe...especially considering it's likely in an area that runs far more timing than at the same boost levels during WOT.


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post #3 of 5 Old 06-22-2009, 12:46 PM Thread Starter
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What a/f should I shoot for?

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post #4 of 5 Old 06-22-2009, 01:18 PM
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It looks like your computer is recognizing those conditions as part throttle and staying in closed loop. On tweecer I would fix the problem by changing my target AF table for the lower load and going into scalars and turing down WOT TPS breakpoint voltage to 2.1 volts and OL throttle breakpoint to around 2.5 volts. I would probably shoot for around 12.0-12.5 in those load conditions.

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post #5 of 5 Old 06-22-2009, 07:03 PM
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Could also tweak the "minimum Loadx required for OL" function.

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