Direct fit H-pipe for 1988 Thunderbird Sport ? Reply #15 – September 22, 2013, 12:26:08 PM I am exempt from emissions in CT being that's a 25 year old car. Same in NY state. If the noise is too much I would just add tail pipes, but I think that will choke the sound being that they go up and over the rear axle...maybe not ? Quote Selected
Direct fit H-pipe for 1988 Thunderbird Sport ? Reply #16 – September 22, 2013, 11:01:50 PM Good tails are how you're going to tune the sound you want. Dumps, aside from being a cop-out, are really just uncontrolled and sound obnoxious, I promise that you WILL tire of them quickly. Beside that, flowmasters, being a chambered ler, require a minimum length tail for the chambers to work correctly. But if you're going to keep the y-pipe, you might as well just do a single flowmaster, because when you y-pipe out to two, you lose so much velocity that you'll have great torque until about 1800rpm, and then she's going to fall flat on her face wheezing for breath. Making an exhaust bigger after it's run smaller (y-pipe) ends up a big loud mess. 2 y-pipes equal a more expensive single exhaust, because face it, you can't flow any more that the narrowest part of the system (single section between the y's). Quote Selected
Direct fit H-pipe for 1988 Thunderbird Sport ? Reply #17 – September 23, 2013, 01:09:17 PM Tbird tail pipes go up and over the rear axle....and then out the rear of the car. That is a lot of length to kill the sound of the exhaust Quote Selected
Direct fit H-pipe for 1988 Thunderbird Sport ? Reply #18 – September 23, 2013, 02:01:53 PM http://www.youtube.com/watch?v=UJS_X3r0eWUThat was my old Sport with b303 cam, stock Mustang headers, stock t-bird y-pipe with gutted cats, ler deleted, and turndowns on the rear y-pipe... SO it was headers and then 2 into 1 into 2. all factory sized except the piece were the ler was deleted and it was the same size as the ler inlet/outlet. It sounded better in person, didn't really change much going to a 2.5" h-pipe and glasspacks Quote Selected
Direct fit H-pipe for 1988 Thunderbird Sport ? Reply #19 – September 23, 2013, 02:18:54 PM The tails are going to MAKE the sound of the exhaust. lers don't determine the sound, they reduce the volume and determine the velocity drop, the tails will determine the shape and tone of the exhaust note. How much sound volume do you think you're going to lose? What are you intending to do; break people's windows or something? Also, if I'm not much mistaken, being emission exempt doesn't make you exempt from your safety inspection, and pretty much everywhere I'm aware of, they require the exhaust to exit at the perimeter of the vehicle to prevent gas pooling and entrance of exhaust into the cabin. Doubly important if you have hollowed your cats out. Quote Selected
Direct fit H-pipe for 1988 Thunderbird Sport ? Reply #20 – September 23, 2013, 03:32:53 PM re: Dougy Fresh: How did you get the headers to fit the Y pipe on the cat ? Usually the collector size on mustang or racing headers is over 2", and the stock y pipe is 2" diameter, at least I believe mine is Quote Selected
Direct fit H-pipe for 1988 Thunderbird Sport ? Reply #21 – September 23, 2013, 03:44:34 PM You're emotionally attached to this y-pipe for some reason I am unable to understand. Quote Selected
Direct fit H-pipe for 1988 Thunderbird Sport ? Reply #22 – September 23, 2013, 04:16:15 PM No...I. just want to get an H pipe and find out it doesn't reach the lers.....money and time wasted Quote Selected
Direct fit H-pipe for 1988 Thunderbird Sport ? Reply #23 – September 23, 2013, 04:50:40 PM Of course it's not going to reach the lers, it's not supposed to. You need the ler inlet pipes for mustang, and you'll need to extend them about 5 inches, but the h-pipe need not be altered in any way, the only alterations you need to make are to the inlet pipes and the the tail pipes. Both need to be extended with straight bits of pipe. Quote Selected
Direct fit H-pipe for 1988 Thunderbird Sport ? Reply #24 – September 23, 2013, 05:24:38 PM Quote from: Gary3072;422228re: Dougy Fresh: How did you get the headers to fit the Y pipe on the cat ? Usually the collector size on mustang or racing headers is over 2", and the stock y pipe is 2" diameter, at least I believe mine isi'm not sure, it was done when I bought the car, BUT, I know they slotted the holes in the y-pipe so that the studs would work and other than that I saw no modifications Quote Selected
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