[DML] Re: Exhaust Back pressure

["David Teitelbaum" <jtrealty@xxxxxxxxxxx>]

In just about all internal combustion engines there is a "magic"
amount of backpressure required. It changes as loads change,
atmospheric pressure, temerature, etc. Straight pipes usually do not
give an increase in power. If they are too short they can allow
ambient air to get near the exhaust valves causing them to fail from
thermal shock. In any case straight pipes are NOISY. In most states if
you do not have a muffler or a cat you cannot pass inspection. I would
at least replace the muffler. You will not get much improvement by
modifying the exhaust unless you also modify the intake.
David Teitelbaum
vin 10757


-- In dmcnews@xxxxxxxxxxxxxxx, "Dani B" <5n-@xxxx> wrote:
> I am wondering if there is any back pressure specifications the PRV-6
> requires? I've been running a straight pipe (no cat or muffler) for
> quie some time and don't really see that much of a performance gain.
> Am I doing damage? Thanks -Dani B. 5003




To address comments privately to the moderating team, please address:
moderators@xxxxxxxxxxx

For more info on the list, tech articles, cars for sale see www.dmcnews.com

To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/dmcnews/

<*> To unsubscribe from this group, send an email to:
    dmcnews-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/