Strangest Boost Issue ever.......
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From: Man in the Sun
Update!!!! SOLVED!!!!!
It was decided to pull off the cat that came with the t-netics kit and see if anything was going on with that side of things....maybe an exhaust restriction that was stopping exhaust flow and the building of boost.
BINGO!!! Just downstream from the catalytic converter was a huge chunk of the honeycomb insides that had blown apart and wedged itself sideways in the exhaust. Additional fragments had jammed up on top of that main chunk and almost completely blocked the exhaust. I am actually surprised the car ran at all with such a backpressure problem. Almost like sticking a banana in the exhaust pipe like back in the old days.
It was decided to pull off the cat that came with the t-netics kit and see if anything was going on with that side of things....maybe an exhaust restriction that was stopping exhaust flow and the building of boost.
BINGO!!! Just downstream from the catalytic converter was a huge chunk of the honeycomb insides that had blown apart and wedged itself sideways in the exhaust. Additional fragments had jammed up on top of that main chunk and almost completely blocked the exhaust. I am actually surprised the car ran at all with such a backpressure problem. Almost like sticking a banana in the exhaust pipe like back in the old days.
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From: Man in the Sun
Originally Posted by QuadCam
didn't you notice that your exhaust sounded different?
hm.. ok now i am thinking about getting a new DP without the cat.. i paid 300 dollars extra for the catted version.. knowing its highflow cat but still a cat .. which might cause some backpressure... hm.. my orignal dyno was only 300 at wheel .. i really think the cat is holding me back by alot.
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From: Man in the Sun
Originally Posted by LODOSS
hm.. ok now i am thinking about getting a new DP without the cat.. i paid 300 dollars extra for the catted version.. knowing its highflow cat but still a cat .. which might cause some backpressure... hm.. my orignal dyno was only 300 at wheel .. i really think the cat is holding me back by alot.
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From: Man in the Sun
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From: Man in the Sun
A big thanks to "Underpressure" and his ideas about the cat problem and his experience with this common problem with Evo 8's. Thanks again.!! The owner is veeeeery appreciative. Car was back together last night and making full boost after the rest of that cat was gutted and the exhaust system was blown out.
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