Anyone bought a Full Spectrum Performance exhaust system?

They've got a 5" system available for $355 shipped to my door. I sent them an email regarding if there would be a loss of power with stock to minor mods and this is how they responded:

"No, Diesels do not react to big exhaust like a gas engine. The turbo reacts (spools up) due to a pressure differential across the exhaust turbine. The higher the manifold (turbine drive) pressure and the lower the exhaust back pressure the better for a quicker spool up that equals low end power. That being said, you should go with the best flowing exhaust that you can in order to gain power and lower EGT. The only folks that will tell you that a turbo needs back pressure are uneducated in the realities of turbocharger performance. A gas engine needs a tuned exhaust system to help scavenge and regulate the exhaust pulse from the exhaust port going too big or too small in this case will dramatically affect power. With a diesel exhaust bigger really is better. unless you have a GM variable vein turbo but I leave those to the Chevy folks.

Thanks,
Tom
FSP"
I was quite impressed by the response, so I'm interested in buying the system. Before I take the plunge, does anyone have any input about this particular system?

 

where did you find it?

 

Here!

 

Companies that sell products NEVER cover up the truth or tell little white lies.....do they?


If anything Piper, the 5" is WAY cool....I want one BAD....

 

this is where i got mine
http://cgi.ebay.com/ebaymotors/Dodge...QQcmdZViewItem

good price and works well. 3 other guys from my town bought from these people and had good luck. thats why i went with them.

i have since bought a dual 4" system i'm goin to mate up with this exhaust system i have on.

 

this place is less than 10 miles from my house....i went by there to buy a system, and i didn't want to pay freight....
the liar says in his ebay ad that he has 10 of them in stock......well it turns out he doesn't have any, and you have to pay the $65.00 freight even if you pick it up at his door..... pissed me off...

 

Saddly many of the ***** with the best prices on ebay are dropship wonders

 

i bought a turbo back to tail pipe section from the same above guy.....it's 4 inch with the performance muffler.....i didn't need a 4 inch tail pipe my truck already has one so my system only cost $175.00 delivered......

 

i think i paid just over $300 for a full system delivered..
best price and good service!