New Tuned ECU, some questions about bucking. - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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New Tuned ECU, some questions about bucking.
Posted by DArcey (more from DArcey) on Mon, 2 Jul 2012 08:15:56
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'98 900 SE 5-speed.
Ok, some of you may remember i was asking questions about a stall at idle. I havent sorted it yet, but have a new O2 sensor on the way, that will hopefully solve it. I dont have high hopes though.
Question is...i installed the new Stage 3 ECU i bought and this car goes like stink...but there are one or two issues:
1. I now hear some strong hissing coming from under the car when i give it gas. At first i thought i blew a hose from the intercoooler or turbo on the compressor side, but they all appear ok....and it happens even NOT under load. As in...before the turbo spools. Could this be a bad seal btw the cat and mid flex pipe?
2. Sometimes under hard boost, the power will totally cut out and the car will thunk loudly. At first i assumed this was the fuel cut...but it seems to happen all over the rev range...just rarely. After i let off and give it gas again...it spools right back up and pulls hard.
Any thoughts?
posted by 63.119.67...
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