Mods for LaCrosse Super, and Super owner roll call
OK Super owners - post here to say hi!
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Well I've come up with the first modification for the Super. It may work in the V6 as well. It is removal of the intake tube in the air box that makes the intake too quiet and chokes out that great V8 intake burble.
The intake for the Super opens up to a high pressure point just forward of the airbox, behind the headlight assembly. As a side note it means it is possible that as with the Regal GS, removing the driver's headlight assembly at the track will have a ram air effect, improving times in the 1/4 mile by at least .1 second and probably improving trap speed. But since it looks like the engine computer is in there, it would not be good for general driving or anywhere that might allow water in. We need some track slips to confirm if it helps, hurts or is neutral to performance.
The air horn sticks out less than an inch forward of the air box, but the tube extends far inside. To remove it I:
-Removed the two bolts from the forward end of the brace that bolts to the strut tower, and loosen the bolt that holds the bar on the strut tower. Then I rotated it forward off the airbox.
-Removed the air filter and flipped the cover up out of the way, away from the air box.
-Released the 4 clips at the base of the airbox that hold it onto the bottom. 2 are visible, and 2 more are on the other side.
-Wrestled with the box until it came free. There is a hose that runs along the top front of the airbox that I pulled a bit out of the way to make more room.
-With the box top out, I slid the tube assembly out of the side of the air box.
-I reinstalled the airbox, filter and cover in the reverse order. The airbox can be tugged a bit to line up better with the opening behind the headlight than it was from the factory.
That's it. Ideally the part external to the airbox would include the small lip the same extension distance as the factory part, but larger dameter openin. The internal tube may also laminarize the airflow better than just a hole in the airbox. A little dyno time would reveal if the changes affect the power curve at all.
One thing's sure - the car SOUNDS a lot better with the v8 unmuzzled a bit. Sure seems like a candidate for an engineered CAI and some flowmaster or other more open mufflers (but I think you'd have to do the cat too - car is too quiet even wth a muffler off).
OK Super owners - post here to say hi!
-----
Well I've come up with the first modification for the Super. It may work in the V6 as well. It is removal of the intake tube in the air box that makes the intake too quiet and chokes out that great V8 intake burble.
The intake for the Super opens up to a high pressure point just forward of the airbox, behind the headlight assembly. As a side note it means it is possible that as with the Regal GS, removing the driver's headlight assembly at the track will have a ram air effect, improving times in the 1/4 mile by at least .1 second and probably improving trap speed. But since it looks like the engine computer is in there, it would not be good for general driving or anywhere that might allow water in. We need some track slips to confirm if it helps, hurts or is neutral to performance.
The air horn sticks out less than an inch forward of the air box, but the tube extends far inside. To remove it I:
-Removed the two bolts from the forward end of the brace that bolts to the strut tower, and loosen the bolt that holds the bar on the strut tower. Then I rotated it forward off the airbox.
-Removed the air filter and flipped the cover up out of the way, away from the air box.
-Released the 4 clips at the base of the airbox that hold it onto the bottom. 2 are visible, and 2 more are on the other side.
-Wrestled with the box until it came free. There is a hose that runs along the top front of the airbox that I pulled a bit out of the way to make more room.
-With the box top out, I slid the tube assembly out of the side of the air box.
-I reinstalled the airbox, filter and cover in the reverse order. The airbox can be tugged a bit to line up better with the opening behind the headlight than it was from the factory.
That's it. Ideally the part external to the airbox would include the small lip the same extension distance as the factory part, but larger dameter openin. The internal tube may also laminarize the airflow better than just a hole in the airbox. A little dyno time would reveal if the changes affect the power curve at all.
One thing's sure - the car SOUNDS a lot better with the v8 unmuzzled a bit. Sure seems like a candidate for an engineered CAI and some flowmaster or other more open mufflers (but I think you'd have to do the cat too - car is too quiet even wth a muffler off).
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