Air flow restrictions?

[BlackVert]

Ok, guys, let's try tro come to a concensus about the order of the air flow restrictions in our engines.

From reading, here is the list I have come up with (1 is the most restrictive):

1. Intake, specifically the lower intake, but upper and lower usually go together.
2. Mass air meter housing
3. Throttle body
4. Exhaust headers
5. Cylinder heads
6. Cam (not really a "restriction", but changing it allows better air flow)

Let's hear everyone's 2 cents ...

- Chris

 

[DFG 5OH]

sounds like a good list. Would the exhaust headers include the rest of the exhaust? My o/r h greatly improved airflow

 

[SWYZ721]

While I wouldn't say that the headers are more than TB and MAF, it's damn near close, if not slightly above, the kinks in each tube is just unsightly.

 

[squall9393]

Exhaust I wouldn't really put on the list if we are talking a mostly stock engine because of course like with a bigger anything (i.e. intake and exhaust) on stock may give you extra horsies but be a drag on low end torque. Of course I guess if we're just stictly talking airflow, then you could say anything dealing with air is better over stock- from the stock restrictive air filter and silencer all the way out the tiny stock tailpipes and catted stock H-pipe. The stock headers aren't to bad on the 94/95s compared to the Fox's but were a little choppy due to the fact header bolt location took presidence over header pipe design.

 

[super302]

1. Intake Manifold
2. Throttle Body
3. Crappy cylinder heads
4. Exhaust system
5. Mass air sensor (alot bigger than the 89-93's had)

 

[type911]

why is the intake port on the #5 cyl so much smaller then the rest? ever look downyour lower intake at the #5 cyl intk port? you can see almost a 1/4 inch of head. when the intake is off you can see it is smaller then the rest. at least on my gt-40x heads.