Toby@ToyTuning.com
Banned - DO NOT BUY FROM TOYTUNING
It won't be the exhaust, if the exhaust was restricted it would cause boost creep, if their was a leak in the exhaust manifold you would get lag and slower response and a leak in the rest of the system would slow the flow rates. Don't forget in this point of time the air has already been compressed so your looking at the wrong side of things.
As mentioned I would look at the actuator first, the springs can become weak over time which means as you boost the spring is too weak to hold the w/gate shut and it slowly opens a tad, hence you loost boost. Again as mentioned the other possibility is the w/gate, if the crack is big enough then you will loose some pressure through there but most of the time it effects response times, even with small cracks they still hold boost fine but worth checking none the less.
Leaks in intercooler piping would cause more of a loss, if it was a big leak then you would loose all boost, small leaks could be highlighted at higher boost levels as there would be more pressurized air which could open coupler joinings on your FMIC or TMIC whichever you have. Again always worth checking but I would pretty much say it was your actuator. One of ours or a HKS would certainly cure it like Toddi mentioned but look at the different factors above first
T
As mentioned I would look at the actuator first, the springs can become weak over time which means as you boost the spring is too weak to hold the w/gate shut and it slowly opens a tad, hence you loost boost. Again as mentioned the other possibility is the w/gate, if the crack is big enough then you will loose some pressure through there but most of the time it effects response times, even with small cracks they still hold boost fine but worth checking none the less.
Leaks in intercooler piping would cause more of a loss, if it was a big leak then you would loose all boost, small leaks could be highlighted at higher boost levels as there would be more pressurized air which could open coupler joinings on your FMIC or TMIC whichever you have. Again always worth checking but I would pretty much say it was your actuator. One of ours or a HKS would certainly cure it like Toddi mentioned but look at the different factors above first
T