2003 Porsche 996 C4S, LS3 Conversion
#302
The Porsche throttle pedal is very similar to the GM. I did some ohm readings and found which wires are from which sensor (2 sensors ). The Porsche pedal seems just a little mushy and not quite as sensitive as the GM. But I haven't had access to a tune scanner to make sure the throttle body is opening all the way or correctly. I've been driving the car just fine, but I feel it needs some fine tuning. Also the Porsche pedal has a cable that goes to a sensor under the dash and this could be where my sloppiness comes from, I just hate getting under there to check it out.
#306
On my ta do list. Weather has sucked lately, been working too much and had some problems with lowering the front end. Exhaust is a little too loud for MY taste, wouldn't want to drive on long trips. I still need to remove and wrap the pipes, will probably try some different mufflers also. Will try and post sound video soon.
#307
Updates: Haven't driven for about 2 weeks.
1. Had a weak battery, tried to start, starter would turn over fine for 5 seconds, 3 attempts, starter got weak, like it had no spark, checked battery voltage 11.3v. charged battery for full charge, car started fine, was told this is normal on computer controlled cars.
Removed exhaust, in process of wrapping, don't like the fact that it is not symmetrical, will have to do, painted with high heat ceramic header paint.
SLP loudmouth 2, a little loud for MY taste
Exhaust hanger
Still need to make some AC hoses.
1. Had a weak battery, tried to start, starter would turn over fine for 5 seconds, 3 attempts, starter got weak, like it had no spark, checked battery voltage 11.3v. charged battery for full charge, car started fine, was told this is normal on computer controlled cars.
Removed exhaust, in process of wrapping, don't like the fact that it is not symmetrical, will have to do, painted with high heat ceramic header paint.
SLP loudmouth 2, a little loud for MY taste
Exhaust hanger
Still need to make some AC hoses.
#308
Looking good man! I'm so jealous of how clean your undercarriage is. Mine has 170,000 (yea.. dont judge). Well, First start was a few days ago. I have a few small wire issues to sort out and then I will be welding the exhaust much like you are. I think I'm going to make plates that mount to where the engine mounts would bolt off that have some angle bracket welded to them. Then I will take and attach exhaust hangers to the angle bracket to support the system. I'm keeping the camaro cats I have.. just have to bend them up.
#309
Looking good man! I'm so jealous of how clean your undercarriage is. Mine has 170,000 (yea.. dont judge). Well, First start was a few days ago. I have a few small wire issues to sort out and then I will be welding the exhaust much like you are. I think I'm going to make plates that mount to where the engine mounts would bolt off that have some angle bracket welded to them. Then I will take and attach exhaust hangers to the angle bracket to support the system. I'm keeping the camaro cats I have.. just have to bend them up.
The Before Picture
Last edited by Fierofly; 03-21-2015 at 11:14 PM.
#310
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Join Date: Nov 2014
Location: Las Vegas, NV
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My 996 came without an engine and I have looked in the Bentley Manual and really have no clear direction of what the lines in the attached photo need to connect too. You input would be appreciated.
#312
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Thanks, I had the fuel supply and return figured out. It was the other two lines that I needed to know about. So, I would guess you hooked the lower hose in the picture to the intake manifold vacuum point on the rear of the manifold, right. And the fuel tank vent to the air intake to the TB? Mine also has another vent line that is just stubbed out under the car around the transmission, on the right side.