Author Topic: Lost boost  (Read 515 times)

Offline David Knoff

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Lost boost
« on: April 22, 2012, 07:37:23 pm »
So parked the car last night running great. Started up today fine went out for a drive and something is not right some how I lost over 5 pounds of boost....... ??? I have looked at all the lines no leeks at all runs great but just no only making 10 pounds. Any one have a qlue? As I said parked it and was set and making 16 last night all settings are the same.

Offline Paul Pigar

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Re: Lost boost
« Reply #1 on: April 22, 2012, 07:40:13 pm »
Did u do a boost leak test yet? If not i would suggest that, make sure all your couplers are tight.
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Offline David Knoff

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Re: Lost boost
« Reply #2 on: April 22, 2012, 08:00:54 pm »
Did u do a boost leak test yet? If not i would suggest that, make sure all your couplers are tight.
Yes I tried that all is good every thing is tight and no leaks.

Offline Jason Harwood

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Re: Lost boost
« Reply #3 on: April 22, 2012, 08:42:58 pm »
Wastegate
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93' Civic Turbo - 14.7 @ 90MPH (bad tune)
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Offline daniel Dee

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Re: Lost boost
« Reply #4 on: April 23, 2012, 12:10:34 am »
Wastegate
x2
You might as well get use to having boost leaks
Suggest you make your own boost leak tester or try to purchase one from a fellow member.
I disassembled my stock size leak tester long ago so I don't know where the pieces are.
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Offline Jason Harwood

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Re: Lost boost
« Reply #5 on: April 23, 2012, 07:08:44 am »
I don't know if this was the same for everyone else, but as it got warmer out, my car had less boost for some reason.
88' MX6 Turbo - 14.2 @ 97.51MPH
94' MX6 V6 - 13.9 @ 96.7MPH
93' Civic Turbo - 14.7 @ 90MPH (bad tune)
90' Civic SI - Auto-X Machine
97' Eclipse GSX 13.6 @ 105MPH
96' Jeep Grand Cherokee Laredo
97' Acura EL 14.5 @ 98MPH
'02 Lexus IS300 15.125 @ 91MPH
97' CR-V Winter Beater.
04' WRB WRX STI

Offline John Hartman

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Re: Lost boost
« Reply #6 on: April 23, 2012, 05:46:03 pm »
that happens for sure Jason. Normally its only a pound or two tho.

If you have actually done a boost leak test(not looking/pulling on the hoses and clamps, but an actual boost leak test with an air compressor), then I suggest having a look at your catalytic converter.  Often old ones can plug up or become damaged in such a way as to block flow.  Low exhaust flow = low boost.
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Offline Brett Haviland

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Re: Lost boost
« Reply #7 on: April 23, 2012, 07:15:34 pm »
 to start with, what are you using for boost control.

you said 16 psi is what it was at...  Was this on the stock boost control solenoid and lines?

2G right?
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