The Diff will have a tag on it. If it has an L it's a limited slip and if it has a S it's Torsen. Only PP and DH came with torsen. In those, auto had 3.55 and manual had 3.73 gears.
Same here, agree. I first installed Pioneer (4ohm). It installed easier and sounded fine, but didn't realize issue with 8 versus 4ohm. B&O system uses 4ohm speakers everywhere but center. If anybody wants the Pioneer 4ohm, let me know.
The orginal grill has the pins that hold the original trim ring in place. I just used some double sided tape to hold orginal trim ring down over speaker then installed a 4 bar grill over it. The screws for the grill also hold the trim ring in place.
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There was a larger obstruction under the dash that wouldn't allow the Dayton speaker to be centered. A little offset of the speaker to the left requiring the washer on the right screw to fasten.
What 8 ohm Pioneer Speaker did you use for center speaker?
Some of us used Dayton ND95 8ohm. The Dayton holes are too close and the speaker is wider and deeper at the magnet and hits a plastic obstruction in dash on right side. I was able to attach in original holes, but had to slot holes...
When I had dealer install new TPMS sensor in my 24 DH wheel that I brought in, they said I needed to bring the car back once I installed wheel on car to have it recognize the new TPMS. After Install of wheel on car, it automatically recognized TPMS and no need to go back to dealer.
On the street, it's not the 20hp at high rpm that you will feel but the possibility of ~40 ft lbs of torque at low rpm that will be most notable and usable. Then there's the trans tuning for those of us with A10s. Of course that's for those of us that are not going to do other mods.
I just got my Dayton 8 ohm speaker for $28 (resale) and will replace the Infinity 4 ohm. Let us know if you have any issues. Not sure I'll be able to hear a difference, but will try.
If your not going to use the orginal grill, it doesn't matter. You can attach the trim ring using double sided tape and the 4 bar grill will hold it in place. However, if you are going to use the orginal grill, this is the pin (1 of 6) that you need to release. A small flat screw driver and...