I was reading http://audirevolution.net/forum/index.php?topic=3227.0 on how to crack open the intake manifold and there’s some good discussion there on the importance of the flaps.
Knowing that they’re prone to failure, is there a consensus on the best course of action for original manifolds?
I thought I’d start a separate thread to make it easier for search purposes.
Hi there I have posted a thread up about my experience with a dodgy manifold. I went through a broken one then gutted mine, then purchased an updated one. Have a quick search on here. Think it was titled inlet manifold and spacers review or similar.
The only thing I didn’t do was epoxy parts in. I ran a gutted one for about 6 months. My post goes into details, I researched all the tuning companies also to see if I could tune around it.
Simply put. Nothing is as good as a genuine manifold.
From everything I have read, if you want max torque and hp at all RPM’s and driving conditions, you need a properly working manifold with all flaps intact and working.
So replacing the manifold is the best option.
The best working solution is the newest intake manifolds. JHM Gets the latest part numbers. The issues with some people getting intake manifolds and them not working for long is they come from part houses that store parts for years then off load them.
If not a new intake manifold The next best is to remove the motor arms and lock the flaps in the log position.
The next option after that is to just pull the flaps all together but you will loose a ton of TQ in the driving range.
http://i1289.photobucket.com/albums/b505/winceenzo/torque_zpsbojwblea.png
What is the graph showing Justin?
Sorry the ref line is long runner green line is short runner only
After my intake grenaded, I gutted it as it was missing 3 flaps. No point epoxying the remianing ones in as then you have cyl filling imbalance, so I took them all out.
IMO this was ok. Car still drove fine, no misfires, it was down approx 35% torque under 4500 rpm. but top end felt just as good as always as that is when you are on short runner anyway.
I did keep it in sport mode though to have it shift up higher, in Drive if you werent over 50% pedal it woudl upshift quick and it felt very doggy.
Nice always good to see this kinda data
Here is my review and experience with failed manifold
http://audirevolution.net/forum/index.php?topic=4793.0
I agree either the below. And it’s 100% drivable if your doing more motorway driving. During my time with the failed manifold one of the motors then burnt out. Tripping check engine lights and putting it in a limp mode. So moved to the new one.