Would overboost cause bucking?
Aug 30, 2007, 09:17 AM
#1
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Would overboost cause bucking?
Hello guys,
Newbie, with a newbie question. Had some parts laying around, so I installed the buschur filter kit yesterday. Car currently is deadstock besides that. While it made a lot more sound, I got slower. I could feel a good hesitation now at the upper RPM's, and bucking is occuring in 2nd and 3rd gear every now and then. I searched the other threads relating to overboost, and it seems like most got a CEL (which I have none) and not quite sure. The ECU is going to be sent out soon for a re-flash, however wanted to make sure another can of worms was not opened. I used to pull my wife in her 350z real hard, now she walks me.
No boost leaks
did NOT descreen the maf as I showed in a couple of threads
hesitation is only at high RPM and bucking in 2nd and 3rd gears
Thanks.
Edit- should have mentioned, stock boost still being controlled by the ECU.
Newbie, with a newbie question. Had some parts laying around, so I installed the buschur filter kit yesterday. Car currently is deadstock besides that. While it made a lot more sound, I got slower. I could feel a good hesitation now at the upper RPM's, and bucking is occuring in 2nd and 3rd gear every now and then. I searched the other threads relating to overboost, and it seems like most got a CEL (which I have none) and not quite sure. The ECU is going to be sent out soon for a re-flash, however wanted to make sure another can of worms was not opened. I used to pull my wife in her 350z real hard, now she walks me.
No boost leaks
did NOT descreen the maf as I showed in a couple of threads
hesitation is only at high RPM and bucking in 2nd and 3rd gears
Thanks.
Edit- should have mentioned, stock boost still being controlled by the ECU.
Aug 30, 2007, 09:48 AM
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i would check to see if your intake is air tight between the maf and the turbo. it sounds like you probably have a leak there. check your intercooler piping too. you should also install a boost gauge. that would tell you if you are overboosting or not.
Aug 30, 2007, 09:50 AM
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the flash is highly recommended after a cone filter such as buschur intake. and as said if u revert to stock intake box, it will most likely get rid of this issue.
Aug 30, 2007, 09:52 AM
#7
ive recently installed the buschur intake kit and havent gotten a tune yet and i dont have any problems like that, actually i can notice a difference. i added an extra car and a half on a mach 1 my friend has so i dont think its because he doesnt have a tune.. Did u check your MAF to see if you put it on upside down or something? That is my only guess.. and actually i dont know if that would even cause it to run different or not
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Aug 30, 2007, 10:01 AM
#8
you dont need to retune your car when installing an air filter.
i would check to see if your intake is air tight between the maf and the turbo. it sounds like you probably have a leak there. check your intercooler piping too. you should also install a boost gauge. that would tell you if you are overboosting or not.
i would check to see if your intake is air tight between the maf and the turbo. it sounds like you probably have a leak there. check your intercooler piping too. you should also install a boost gauge. that would tell you if you are overboosting or not.
Aug 30, 2007, 10:42 AM
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Thanks for the replies... Woud re-install the old airbox if it wasn't destroyed when pulling it apart from the MAF. did like in some of the FAQ with the sludge to not break the little tabs in the airbox, well it cracked the airbox in half
Aug 30, 2007, 12:00 PM
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you dont need to retune your car when installing an air filter.
i would check to see if your intake is air tight between the maf and the turbo. it sounds like you probably have a leak there. check your intercooler piping too. you should also install a boost gauge. that would tell you if you are overboosting or not.
i would check to see if your intake is air tight between the maf and the turbo. it sounds like you probably have a leak there. check your intercooler piping too. you should also install a boost gauge. that would tell you if you are overboosting or not.
Aug 30, 2007, 01:00 PM
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Yea, you'll need a tune. At high rpm's like around 4k and up thats when you'll start to stall. I had a tune before I installed the filter, but it still happened to me. Gotta adjust the boost higher.
Aug 30, 2007, 10:10 PM
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can someone explain to me how something as simple as a filter, would REQUIRE you to retune your entire car?
some can argue that you now have a bit less restriction, and a bit more air flow going into the motor, but the stock maf still sees that air. there is no need to tune your ecu after such a simple change! if the car is bucking or hesitating, then its because there is an air leak somewhere between the maf and the throttle body.
some can argue that you now have a bit less restriction, and a bit more air flow going into the motor, but the stock maf still sees that air. there is no need to tune your ecu after such a simple change! if the car is bucking or hesitating, then its because there is an air leak somewhere between the maf and the throttle body.