Turned up Boost! Made no more power..why?
#1
Turned up Boost! Made no more power..why?
As stated turned up boost from 15psi to 20psi only saw 30whp. What could be problem. Left tune the same... Doesn't seem to be blowing out spark because car is not cutting out and graph looks good. I don't think it's back pressure... I run 4" dump about 12" out turbo and that's it! HELP!!!
#3
yeah when your hp per LB drops off like that you might be loosing alot of power from your IAT vs spark table, if you are running a stock computer, also you could be out of turbo.
or both.
or both.
#4
Another thing to consider is an boost leak or knock. If your getting knock that will pull timing and also kill power. As stated above, depending the on size of your motor and turbo, it could be out of turbo as well.
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#8
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As stated turned up boost from 15psi to 20psi only saw 30whp. What could be problem. Left tune the same... Doesn't seem to be blowing out spark because car is not cutting out and graph looks good. I don't think it's back pressure... I run 4" dump about 12" out turbo and that's it! HELP!!!
Last edited by pwrtrip75; 04-16-2012 at 09:19 AM.
#9
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As stated turned up boost from 15psi to 20psi only saw 30whp. What could be problem. Left tune the same... Doesn't seem to be blowing out spark because car is not cutting out and graph looks good. I don't think it's back pressure... I run 4" dump about 12" out turbo and that's it! HELP!!!
If you turn the boost up, you MUST retune for that pressure/airflow.
And a lot will also depend on setup, turbo size etc. More boost does not always = more power.