boost not steady

[MIVEC95]

keeps on moving from 13 to 12.5,then back to 13 , whats causing this , car has a new wastegate already

[GEAR_HEAD]

faulty wastegate.......

[janfar]

Faulty recirc aswell.

[Honda_Roach]

check yuh wastegate or line from the wastegate to the BOV!

[7143]

check yuh wastegate...

[MIVEC95]

yep wastegate was the problem , now i have another *read first post*

[GEAR_HEAD]

What type of boost control are you using?

If its controlled by the ECU then -
it may be the ecu trying to correct for an overboost condition.....so what happens is the ecu will pull WGDC (solenoid duty cycle) to correct for this condition and then add back some to achieve the correct boost. if you can get into the ecu try removing any error corrections (not failsafe or boost cuts!) and see if that helps...

or you may have a boost leak somewhere.....

[cinco]

faulty gauge?

[MIVEC95]

na not gauge , its showing on the datalogger also , and no boost leak either , i using a turbo xs manual boost controller

[donnie brasco]

na not gauge , its showing on the datalogger also , and no boost leak either , i using a turbo xs manual boost controller

that MBC may just be your problem right there...
I have one and i'm experiencing the same problem..Have you ever checked the reviews on them? Most people who use them report the same symptoms as yourself. The remedy? An EBC.

[dry]

Move the wastegate feed line closer to the turbo. Having it near the throttle body will encourage boost spikes and wavering, especially with an MBC.

[Jonathan]

^^ Yup, good advice here.. It should quicken the response time of the boost controller.

[MIVEC95]

moving the line tommorow , will let u all know

[tr1ad]

having the same problem with my ride....could it also be the Electronic Boost Solenoid?

checked for leaks, boost was fine up until a few weeks ago when it started

from standstill full boost, then by 2nd gear it starts to fluctuate