boost gauge problems
#1
boost gauge problems
I just installed my Stewart Warner boost gauge today. I dont know if the boost gauge is broken or its my car but when i am at WOT the gauge would spike to 20psi and then drop back down and stay at 15-16psi. I checked all my connections for leaks and can not find any. Another member on the board has the same problem and we cannot figure this out. Any help would be appreciated. thanks
btw the gauge reads 19-20 psi vaccume.
btw the gauge reads 19-20 psi vaccume.
#7
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Yea all of them will do that if you dont have a boost controller other than the stock solenoid. And even then they'll still do it just not as bad. Its simply your turbo not being able to keep up at the high rpms combined with the ecu tapering it anyway to keep it safer at higher rpms. Nothin to worry about. I miss the days of 19 vaccuum. Wait till you do cams. i get 11 now(revolvers)
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#8
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sounds like it is reading right... if you are tapering that much with a MBC something is not happy, should check it out... what type of MBC ... did you lube it before installing it ?
#9
i always thought stock evo's boost 19psi-20psi. 15psi seems very low to me and i am always reading people boosting 20psi and tapering down to 19psi.
look,
look,
Originally Posted by Warrtalon
20.3psi at 3500rpm
17.xpsi at 6500rpm
This is common knowledge and has been stated countless times on this board. Please learn to search.
03redtype-s, please don't answer Newbie questions.
17.xpsi at 6500rpm
This is common knowledge and has been stated countless times on this board. Please learn to search.
03redtype-s, please don't answer Newbie questions.
Last edited by daisaw1219; Jul 5, 2006 at 07:39 PM.
#10
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Originally Posted by daisaw1219
i always thought stock evo's boost 19psi-20psi. 15psi seems very low to me and i am always reading people boosting 20psi and tapering down to 19psi.
look,
look,
Find a long road, get in fourth gear @ 2500RPM, got WOT and you'll probably see the boost curve (taper) you want.
#12
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Originally Posted by Evo_Kid
I used to have a 05 VIII and now have a IX. I used the same boost gauge on both and the IX seems like it likes to taper more and some times I have seen it taper as low as 15lbs.
Find a long road, get in fourth gear @ 2500RPM, got WOT and you'll probably see the boost curve (taper) you want.
Find a long road, get in fourth gear @ 2500RPM, got WOT and you'll probably see the boost curve (taper) you want.
Aside from pressurizing the system, is there any other way to know you have leaks? I mean, I recently took it to a dyno and it made good power (300whp/310wtq and on stock exhaust) and thats where it was still tapering down to 16psi...
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Dec 13, 2009 08:32 PM