Another great Forced Air article and neat DIY manometer

cool too bad only wants you to read part of it without paying.

I can see all 5?

Blue it asks you to pay for the article and sign up. Sounds like it might be interesting but I doubt anyone here is going to pay for it.

I would love to view this cause I need forced air in my car and im trying to find the perfect place. I think I narrowed it down a little.

Here are the other parts (truncated)

<http://f2.autospeed.com/cms/article.html?&A=0637>

<http://f2.autospeed.com/cms/article.html?&A=0646>

<http://f2.autospeed.com/cms/article.html?&A=0652>

<http://f2.autospeed.com/cms/article.html?&A=0663>

Some mods resolved the loss but then their turbo got messed up and the thing started to detonate and perform poorly... seems like the restriction was built in by Audi!!!

-------

More likely they didn't have a way or know how to compensate for the extra air. I seriously think when people say they installed a 60mm TB and a bigger AFM on a Z and didn't see any difference, that's what is going on. The extra air will lower performance if you don't add some fuel to go with it.

shouldnt the ECU Computer regster to add more gas? or unless the injectors are maxed out...

Not always. I sure wouldn't count on it doing it for you "automatically". If the AFM is already at it's max reading at the stock WOT, more air isn't going to register anything. You need to have a way to monitor AF ratios or you're just guessing at what's going on when you start modding with EFI. Many systems have a WOT map in the ECU they use and assume the engine is stock. Unless you jack up the fuel pressure, it's going to go lean with more air.

This is a HUGE mistake the Honda (and the gen 3 RX-7 turbo..) guys do. Their cars have a digitally programed fuel map and when you add a CIA etc, it just leans the engine out. On the honda, it just slows them down, on the RX-7 turbo, it spits the apex seals into the front converter. ;-)

good info to know!