Cold air feed on a diesel?

[mrannikk0]

Sorry off topic!!

2)The "bigger is better" syndrome. Factors that affect the resistance of a duct include changes in cross-sectional area, changes in direction, length and the surface roughness of the duct. Comparing your duct to the standard arrangement, yours is longer, has more bends in it, is squashed and is corrugated. None of this is going to help.

This pipe patent was actually Seat Motorsport stuff. My old Cordy had many of this kind stuff bolted on. So I little wonder why those modifications made if that don't work?? Please just read my RR

 

[BenG]

http://autospeed.com/cms/title_PoweringUp-the-19-litre-TDI-Part-1/A_112210/article.html

I'd read the article previously.

Given that the engine uses a variable geometry turbo, would it be correct to assume that the ECU adjusts the turbo to compensate for any variations in inlet restrictions / pressure drops to give the required boost pressure and that, if inlet flow restrictions were reduced, the turbo vanes would simply be adjusted to maintain the demanded boost level?

Julian Edgar certainly achieved worthwhile results from previous free flow inlet projects on naturally aspirated and turbocharged petrol engines, but they were older turbo cars with wastegates where sticking a freeflow exhaust on would achieve an increase in boost pressure and power.

 

[cheshire cat]

yeaa pretty much- if you have a boost guage and cruise set it at approx 50mph and watch the boost gauge while going along on gentle rise or fall in road surface, so gentle it's an impressive demo' of modern technology