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Post by andystl on Apr 7, 2014 10:40:41 GMT -6
Last week i put on an invidia down pipe & reflashed to the appropriate Cobb map via access port. The past two days I noticed at idle my rpms were dropping low. Now when at a stop light my car will die. It runs great besides that, any guesses? Would data logging help to point out anything?
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Post by xti on Apr 7, 2014 12:42:58 GMT -6
Have you gone WOT since the upgrade?
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Post by andystl on Apr 7, 2014 12:58:29 GMT -6
Yes, many times ;-) I did a little research... I am pretty sure I did not damage the mass airflow sensor when removing or installing it nor do I think there is any exhaust leak, all bolts were tightened down well. I am wondering if I bumped a vacume hose loose, but am not 100% sure where to find them. I really need to get me a manual for this car. Any suggestions to the best one?
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Post by xti on Apr 7, 2014 16:33:42 GMT -6
It sounds like an intake tract leak. I've had many, lol.
The most notorious of all hoses to pop off is the one behind the intake manifold underneath the TMIC. Mine popped off under increased boost when I went stage 3. I had to zip tie it.
The other trouble spot is the coupler between the throttle body and the intercooler. There are these stupid little rubber ends on each side of the coupler and they come loose, creating a less than ideal seal on both ends.
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Post by dkdekes on Apr 8, 2014 7:50:10 GMT -6
All the oem service manuals are digital now and you need to pay for a membership to access and download them. The prices are pretty high. So go on ebay and search for your cars service manual. Somebody has paid for the membership and downloaded a ton of the service manuals for different Subarus. They run around $10. Not too sure if it's legal or not lawl but I got one and do recommend it
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Post by memmek2k on Apr 8, 2014 8:27:08 GMT -6
<.< you can find the 2008 FSM for free, I know that for sure. If you have trouble, PM me and I'll send it to you.
Otherwise, you can see if you have a vacuum leak by logging A/F Correction and A/F Learning. Just do 5-10 min of easy driving after the car's warmed up, then look at the values for those parameters (I use a conditional formatting color gradient in excel to make them easier to look at). If you're seeing more than 10%-15% correction consistently, you probably have a leak.
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Post by andystl on Apr 15, 2014 7:28:13 GMT -6
After 2 days of the car dying at every stop light it seemed to work itself out. It was running much more smoothly, I logged the A/F Correct & Learning on a short drive & everything looks good, thanks for the heads up.
While that was going on I decided to get a Torqued Performance Stage 2 tune. I got that installed last night & I am very happily surprised at the difference it made. I need to log some pulls & send the data in for a more custom map but for the initial OTS map this thing is great. So much more top end torque compared to the COBB map! I have never had a pro tune, but I can say that this TP tune is much better than the COBB Stage 2 tune I had on it.... according to my butt dyno anyway.
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