[Shotimes] con't exhaust question

[Carl Prochilo]

Here's a datapoint.  My 95 MTX has the original SS exhaust offering,
Y-pipe and stainless cat back.  The car was sold to me with the Ford 80mm
MAF and some custom plumbing to create an air duct to the fenderwell using
the smaller oval K&N filter, however the PO must have sold the chip since
it ain't there and the car was running on the original 55mm MAF.  I can
tell you that the car does not feel anywhere near as quick as my 92, but
that is not an entirely fair comparison.  Suffice it to say that I know
the 55mm MAF is a bottleneck to performance since the exhaust is not a
restriction in the system.  As soon as the time comes, the MAF will be
addressed but there are other priorities to take care of on the car first.

As a separate scenario, I also had an opportunity to replace the 77mm with
the 55mm on my 3.2L 92 and the performance degradation was noticeable.

So the real conclusion I draw from all this is that you need to view the
entire breathing aparatus as a system and that's where you really get the
performance benefit, intake and exhaust being opened up together.  You can
do the intake or one of the exhaust items separately, but you won't
realize the true potential of what can be attained until you do them all
together.
-- 
Cheers,
Carl Prochilo
92 Ultra Red Crimson

On Tue, June 8, 2004 11:13 am, Ian Fisher said:
> replacing the mufflers alone won't do much unless you
> replace the entire catback. What other mods do you
> have on your car besides the Pro-M 80mm MAF?
>
> Most people do the Y pipe first and a catback later
> (if at all). I followed this route on my MTX and
> noticed that both were beneficial. I suppose I am now
> going to be asked to qualify that comment in one way
> or another but all I can say is that it feels
> stronger, seems to pull harder and is a bit smoother.
>
> Ian
>
> --- ROBERT SCHIRMER <1surferbum@msn.com> wrote:
>> Gentlemen (and Ladies)
>>
>> Some of the comments have come back on the exhaust
>> system talking about the
>> catback systems. I was under the impression that on
>> the SHOs, the greatest
>> restriction is from the Cats forward, and not behind
>> the cats. Therefore, I
>> was thinking about replacing the cats and forward,
>> which means I can update
>> the cats, and fix the Y pipe restriction.
>>
>> However, some have commented that the Y pipe does
>> not provide as bad as a
>> restriction on a ATX, versus the MTX. Some have also
>> commented that the Cats
>> were bad cause the fuel mileage dropped. As far as I
>> know, my SHO has never
>> really gotten that good of gas mileage, but with a
>> trip planned on Wednesday,
>> I am going to be checking the MPG.
>>
>> I recently upgraded to a 80 MAF from Proflow. So for
>> additional HP, should I
>> change the Y pipe and cats, or just the mufflers??
>> Which replacement (Cats/Y
>> pipe or mufflers) would give me an increase in
>> Torque??
>>
>> Thanks
>> Bob
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>
>
>
>
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