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Very good info. Makes sense to me. From other info. I have gathered the stock air filter housing isn't restrictive,it is just the necked down silencer/inlet. I have greatly enlarged the opening to accept a 5 inch dia. inlet pipe. This should give the benefit of additional cooler air,but be able to keep the MAF in it's stock position.
 

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Mark, you emailed me about this but I hadn't actually seen the project. I'm always looking for ways to improve the system and could send a customer both pipes (rotated and non-rotated) for dyno comparison. With the forthcoming TB pipes it would also be nice to see how the whole setup is affected.
With my customer feedback and my own dyno sessions and independant sessions the A/F ratio has been on the money, unlike the A/F ratio shown with the MAC in this session. Part of the difference might be how hot the engine side of the metal tube gets compared to the thicker, cooler, plastic.

<font size=-1>[ This Message was edited by: JP DEMOLET on 2001-11-23 04:54 ]</font>
 

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The idea seems sound given a rich condition to begin with and our stock Bullitts do run a little rich.

Anther aproach to achieve the same result would be to modify the intake portion of the sampling tube, a restricter plate of sorts.

Now, how to do it and test it.

Better have a stock replacement on hand.
 

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just dyno'd my stock Bullitt 2 runs with the MAF turned and one with out, I will be keeping mine in the stock position.
 

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Discussion Starter #6
<TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font size=-1>Quote:</font><HR></TD></TR><TR><TD><FONT SIZE=-1><BLOCKQUOTE>
On 2001-11-24 20:27, cmezip wrote:
just dyno'd my stock Bullitt 2 runs with the MAF turned and one with out, I will be keeping mine in the stock position.
</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR></TD></TR></TABLE>

Dude,

Read the title of this post AND the web page about the mod. This *trick* only pertains to Cold Air Intakes that attach a curved 90-deg duct in front of the MAF sensor. You wasted your time.

Mark
 
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