OT:Re: Tech'ish question. Inquiring minds want to know.

[julie at menloparkrandd.com (julie@menloparkrandd.com)]

So if I eat a lot of beans, I get low back pressure? Then will Beano work on a car?
(Sorry, infantile humor tonight :)

>-----Original Message-----
>From: John S. Lagnese [mailto:jlagnese@massed.net]
>Sent: Tuesday, May 23, 2006 10:27 PM
>To: 'Scourge', 'Scirocco List'
>Subject: Re: Tech'ish question. Inquiring minds want to know.
>
>Low backpressure.
>John
>----- Original Message ----- 
>From: "Scourge" <scourge@cogeco.ca>
>To: "Scirocco List" <scirocco-l@scirocco.org>
>Sent: Tuesday, May 23, 2006 9:33 PM
>Subject: Tech'ish question. Inquiring minds want to know.
>
>
>So I've been wondering.
>
>What makes a car backfire? Not regular loud single shot backfires, but the 
>awsome little pop pop pop some cars have on heavy downshifting.
> My golf used to do it like mad, I loved it. Made it sound so raw and 
>hardcore, lol. Non of my rocco's have ever done it.
>
>One guy I know once told me it was cause by small holes farther up the 
>exhaust(I guess he meant near the DP) that while leaking a bit would also 
>create a sort of scavenging effect and pull some air back into the exhaust 
>system. That air had oxygen in it and could then act as an accelerant with 
>the bit of unburnt fuel and it would ignite in the exhaust, thus creating 
>the "pop pop pop" when downshifting. I have no idea how accurate this is.
>
>Any thoughts/input??
>
>-George -missing crazy things my golf could do(like shoot flames out the 
>tailpipe!)
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