NPI Exhaust sound

[1987stangman]

I have decided to put some mods on my car. I have almost collected everything i need for a PI swap but that wont be done for a while. I want to ditch the stock mid pipe with a O/R H-pipe. The car only has a set of flowmaster 3 chambers and I want to see if removing the stock mid pipe will make the car sound a little better cuz right now it sounds weak. I know when I went to a O/R H-pipe on my Fox it sure made a difference even before the headers went on. Anyone got any sound clips?

 

[jomull55]

try these
youtube.com

streetfire.net

mustangexhaust.com

 

[04fullitgt]

mustangexhaust.com

+1 tons of sound clips on here.

 

[cobra2798]

NPI cars may be down on power but they sound better than the PI cars, IMO.

 

[CobraRed_96_GT]

NPI cars may be down on power but they sound better than the PI cars, IMO.

This is quite possible depending on your preference. When i put ported PI heads on + cams, it smoothed out a lot and got a little deeper in tone. Smooth as in downshifting to a stop with foot off gas before would crackle and burble, now just is a declining exhaust tone.

 

[bhuff30]

I've got an offroad H on stock mufflers and it sounds great. It will be quite a bit louder. In fact, with my stock mufflers, it is about perfect and any louder would be too loud.
I do enjoy the way my 97 gurgles when decelerating in gear. I'm not sure if the PI engines do that or not.

 

[1987stangman]

Ok, I will check the sound clips out. I like the input but I have an auto, so that will make a diff in sound I bet. PI cars have slightly more aggressive cams so i figured the better stock sound was natural for them, I guess I am just used to my Fox's full exhaust on ported heads and cam sound!!!

Anyone know what the easiest O/R H to install is? I know on Fox Mustangs the Mac's were the best but I heard 4.6's were a little more of a challenge!

 

[bhuff30]

They should all be about equal on installation. The hardest part of the job is always getting the stocker off. The header bolts are at a funny angle, so a swivel extension is helpful, though I did mine without.

 

[squeak93]

Soak the bolts/nuts in pb blaster before you ever touch them just to make sure u don't snap a header stud off. 30 mins will do just fine.

 

[1987stangman]

Soak the bolts/nuts in pb blaster before you ever touch them just to make sure u don't snap a header stud off. 30 mins will do just fine.

Will do. I got a great assortment of air tools so I do not think getting the old one off will be a problem.