Originally Posted by JerrytheJeep

I like how they were saying a 91-95 was faster than later models. I'd like to see them try my mostly stock 2000.

Originally Posted by BNJeepsta

You didn't actually read the article did you?

Originally Posted by Programbo

LOL. I laugh everytime I see this "magazine" article posted. So a couple of dudes in a garage somewhere put ONE intake on ONE XJ and it didn't work out like people say and thus they claim they scientifically "busted" the intake manifold "myth". To be scientifically valid this "ACTUAL testing" should have included many vehicles and been performed on a variety of test equipment. If they had ANY pre-test opinion on the validity of the intake manifold swap their entire process and results can not be taken at face value as even trust worthy. But man those are some smart fellas. They know more than the automotive engineers at Daimler who redesigned the intake manifold to restore power lost over the years due to modern emissions additions and the engineers at Edelbrok who use the same techiques and testing to design higher flowing intakes to increase power for race cars. Shame they are wasting their vast knowledge working at some webazine when the entire world wide automotive industry has it's head in the sand and doesn't know what it's doing.

Originally Posted by Programbo

LOL. I laugh everytime I see this "magazine" article posted. So a couple of dudes in a garage somewhere put ONE intake on ONE XJ and it didn't work out like people say and thus they claim they scientifically "busted" the intake manifold "myth". To be scientifically valid this "ACTUAL testing" should have included many vehicles and been performed on a variety of test equipment. If they had ANY pre-test opinion on the validity of the intake manifold swap their entire process and results can not be taken at face value as even trust worthy. But man those are some smart fellas. They know more than the automotive engineers at Daimler who redesigned the intake manifold to restore power lost over the years due to modern emissions additions and the engineers at Edelbrok who use the same techiques and testing to design higher flowing intakes to increase power for race cars. Shame they are wasting their vast knowledge working at some webazine when the entire world wide automotive industry has it's head in the sand and doesn't know what it's doing.

Originally Posted by BNJeepsta

http://www.fourwheeler.com/how-to/en...67087#cxrecs_s

Pretty cool article with ACTUAL testing results. Honestly, my main reason for posting this is so all you guys that are switching your intake manifolds out for the 99+ manifolds will see how stupid it is. Enjoy

Originally Posted by Demonoid369

Problem that I saw was the 99' intake isn't meant for hp BUT for tq gains which they do not show. The theory is the curved smooth, slightly narrower passage allows for better low end torque, not hp.

Originally Posted by BNJeepsta

, I would almost guarantee that it made the curve considerably larger.

Originally Posted by mentalbreakdown00

actually forced induction cares less about some smaller restrictions, the reason being an N/A motor is relying on air pressure 14.7 psi at sea level to force itself into the engine on the intake stroke. When you have boost though, lets say 10 lbs+ atmospheric= 24.7 lbs pushing air into the cylinder. Now im not saying getting rid of those restrictions wont help, i'm saying it doesnt matter as much as an N/A motor... When my engine goes south (hopefully no time soon since I just got it going again after 2 years downtime) I will do a 4.2 and cam and propane all at once with an HEI distributor, and will probably go for the intake then

Originally Posted by mentalbreakdown00

Because I can get propane free, and have worked on more propane powered vehicles than I can remember. I want to go propane for a few reasons, but you could call me a "prepper". Propane does not go bad, no electronics other than the HEI distributor unless I went with an elctric cut off solenoid, instead of a vacuum. You can upgrade the diaphrams in the card and vaporizer to silicone where they don't rot after 5-7 years. No more fuel pumps,nor electronics other than hei module, and coil, which I will have spares inside of a microwave with an oxygen eater pack. I have 2 forklift tanks already and can take the fuel tank out and raise them into the rear compartment to be totally protected. Cleaner burning and longer lasting motor also....