Vcoat

I have the dynatech headers with highflow cats along with stock mufflers...sounds great to me!

06GT4RAD

Exactly and this is something that gets overlooked by lots of people. I have read about this in several mags. And most of the dyno results seem to be very consistent with the TQ numbers but like i said they do only show about a 5HP improvement.

Richard

CrazyAl

This is the first that I have seen/heard of this as well. Can you please post a link to one of the articles in question or a dyno chart of an indipendant test?

06GT4RAD

Well i know my current Mustangs Monthly has an article in it and i have also seen it in MM&FF along with 5.0. Let me try and save the article into a file and I will see if i can post it large enough to read with the dyno chart.

Richard

06GT4RAD

oops

CrazyAl

You'll have to upload the file. That site you hosted it on does not allow hotlinking and requires an account for other people to view your images.

06GT4RAD

Really? So your saying that you do not see the picture that i see on page 1? I have never ran into that problem before. I will load it somewhere else. Here try this one.



Richard

CrazyAl

No, earlier it was showing a red X. It worked this secondtime though. Thanks.

That test is pretty intersting. This is the first test that I have seen which demonstrates asignificant benefit to the shorties. Unfortunatley, this testcontradicts the earlier one shown in 5.0 Mustang magazine.

Anyway, this test does show a gain of 10.1 HP and 17.6 ft-lb at 3000 RPM. That's not bad at all. This would not be a bad mod for the budget concious person interested in street performance. 3000 RPM is a very useable spot for the gains to be had.

However, I still belive that longtubes are a better choice:

First of all, the installation labor is the same for either one. 6 hours at $70/hour is $420.

And the parts prices arenot that far apart, if you compare comporable quality. For example, the BBK headers are ceramic coated mild steel and they cost about $375. Ceramic coated longtubes are available fromBBK for $480.

You can have shorties for a total of about $800, or longtubes for about $900. That's about $100 more, for a significantly higher gain in performance....not to mention the LT's dont COST you HP at the upper RPM range: Note that the BBK shorties tested here resulted in an HP LOSS compared to stock exhaust above 5000 RPMs.

06GT4RAD

I agree 100% that the Longtubes are a better choice, but in States such as California which is where i live Shorties are the way to go. So in States that have Emission testing shorties are the answer.

Richard