what is this noise at high speeds?!?!?
Dec 17, 2005, 09:18 PM
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what is this noise at high speeds?!?!?
So I was driving on the open freeway at night and decided to open up the throttle a little, lol. I start climbing in speed and when I get to about 110 mph, You can here a thud every three seconds and bump. This is when the gas pedal is all the way down. Now I tried it and looked at my boost gauge and it stays at 25 psi when it's up there! When I gradually press the gas, there is no thud or anything. I got the hallman manual pro boost controller with the cockpit cable. Is there a problem with this? I doubt it's a boost leak. I don't loose any power, but I do hear a high pitch noise which is the bleed off hole.
Dec 17, 2005, 09:43 PM
#4
why on earth are you running 25psi with those mods? turn your boost down to 20psi and go get some more mods...
do you know why mitsu designed the US spec evo's so rich? ...cause anyone can get their hands on them and not know what psi is and think...oh more boost...more power...and run 25/26psi with no other mods and end up blowing their engine and blaming mitsu... jdm evo's run waay leaner than the us evo's....japs arent' stupid....for the most part they know what they are doing ...
...sorry for the rant...just had to vent a little
do you know why mitsu designed the US spec evo's so rich? ...cause anyone can get their hands on them and not know what psi is and think...oh more boost...more power...and run 25/26psi with no other mods and end up blowing their engine and blaming mitsu... jdm evo's run waay leaner than the us evo's....japs arent' stupid....for the most part they know what they are doing ...
...sorry for the rant...just had to vent a little
Dec 17, 2005, 09:48 PM
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Yeah, i would turn the boost down to 20 asap. I really hope for your sake, under the load of 5th gear and 25 psi you arent predetonating. I would be more careful
Dec 17, 2005, 10:01 PM
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Originally Posted by Dero
Yeah, i would turn the boost down to 20 asap. I really hope for your sake, under the load of 5th gear and 25 psi you arent predetonating. I would be more careful
Dec 17, 2005, 10:08 PM
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Originally Posted by Lancer 4 Me
wouldn't that be the "thud" sound he is hearing?
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Dec 17, 2005, 10:08 PM
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Originally Posted by phatman2600
So I was driving on the open freeway at night and decided to open up the throttle a little, lol. I start climbing in speed and when I get to about 110 mph, You can here a thud every three seconds and bump. This is when the gas pedal is all the way down. Now I tried it and looked at my boost gauge and it stays at 25 psi when it's up there! When I gradually press the gas, there is no thud or anything. I got the hallman manual pro boost controller with the cockpit cable. Is there a problem with this? I doubt it's a boost leak. I don't loose any power, but I do hear a high pitch noise which is the bleed off hole.
Dec 17, 2005, 10:54 PM
#9
First keep those speeds at the track!
You had you mods installed at a shop. Take it to someone and have it checked out. Add the exhaust you were going to get and fix any thing you may have damaged.
Get the car tuned/flash and dt.
I think you had some prior stuff going on, like fluttering ect.This should have told you to have it looked at (unless you know what you are doing) by a shop that works on evos and has a good rep. My a shop on here is close to you.Have to towed via a flat bed.
Good luck!
You had you mods installed at a shop. Take it to someone and have it checked out. Add the exhaust you were going to get and fix any thing you may have damaged.
Get the car tuned/flash and dt.
I think you had some prior stuff going on, like fluttering ect.This should have told you to have it looked at (unless you know what you are doing) by a shop that works on evos and has a good rep. My a shop on here is close to you.Have to towed via a flat bed.
Good luck!
Dec 18, 2005, 12:59 AM
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I have always kept the boost controller all the way counter clockwise and move it half a turn so the word boost is in the normal way it is turned. I have never turned it more than half a turn. The boost gauge reads 25 psi, but i am running close to stock boost. Why does my boost gauge say i am running at 25 psi?
Dec 18, 2005, 07:08 AM
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Originally Posted by phatman2600
I have always kept the boost controller all the way counter clockwise and move it half a turn so the word boost is in the normal way it is turned. I have never turned it more than half a turn. The boost gauge reads 25 psi, but i am running close to stock boost. Why does my boost gauge say i am running at 25 psi?
Does your boost gauge ever move? Will read vacuum at idle?
Dec 18, 2005, 07:12 AM
#15
Originally Posted by phatman2600
I have always kept the boost controller all the way counter clockwise and move it half a turn so the word boost is in the normal way it is turned. I have never turned it more than half a turn. The boost gauge reads 25 psi, but i am running close to stock boost. Why does my boost gauge say i am running at 25 psi?
Why did you say make the declarative statement that you are "running close to stock boost" when the gauge reads 25psi? What makes you think that?