As I save for my Duals, I'm wondering....

[Glen]

$200 cats to the back, H pipe and turbo mufflers, installed. That was 2 years ago.

[1987cp]

No, we all know Flowmasters don't flow as much as other performance mufflers of the same inlet and outlet size, it's the way the angled deflectors handle the individual exhaust pulses that they claim nets a gain, allegedly creating a momentary low-pressure zone (lower than atmospheric pressure) between pulses that actually helps scavenge the next pulse from the cylinder. While I don't claim that this has any relevance during real-world street driving, I don't think it's fair to assume that Flowmaster's performance claim has much if anything to do with the sizing of the exhaust system. (Obviously, a poor-flowing muffler on a larger system, say 2.25" duals, will let the engine breathe better than no muffler on a system, say 2" single, that's definitely too small!)

[andymac0035]

This apparently got lost in the problems we had here sunday...but I still had the e-mail notification.

in regards to glass packs , i have 2 ,31 inch thrushpacks on my linc sounds good,aaand wait for it ..actually improved my performance...even more noticeable whan i sealed the pipes where i clamped them together, sounds good an not to mention cheap.lol how loud itll go depends on how long the glasspack is, i got the long ones cuase i like a nice rumble , but i also like a nice bark when i put the hammer down. Best of all there isnt any drone issue that tends to plague a lot of performance mufflers out there.the womans ,brother ha sa 01 stang sitting in the back seat it drones so bad @70 mph youll go deaf for a few min, his also has what i like to call "canned" muscle sound to it,never really liked it.My mufflers are a perforated straight through design, but to each his own. i just happen to like the sounds of thrush mufflers, had one on my cordoba, but i like my glasspacks better lol not to mention cheap .

I find this interesting because like I said, I had some glasspack duals on a 78' marquis.
They were long also, like almost 3 feet long, but they did sound good. I did not notice a perfomance increase in the car, going from a single to duals, but it didn't have an H-pipe either. I really liked that car though. I always hear negative about the 400, but that car really like to move out. My dissapointment was that it didn't like to spin the tires, even with an open diff. All it wanted to do when you tromped it was squat and take right off.....which I suppose is what you ideally want.....but at the time I was more interested in smoke-shows.

[1987cp]

I'd also missed that about the 31" glasspacks ... those were probably the exact same ones I ran for a while when the wagon was mostly stock (straight inlet/outlet, 2.25" in/out). Sounded decent, and until recently I had them stuffed on the end of the 2.5" system that used to be under the wagon, just to help keep sound under control.

My mom's '74 Cougar had the 400-2V. I never drove it, as it was wrecked when I was 3 and like good suburbanites, they let the insurance company take it afterward, but I was told it had gobs and gobs of low-end for the pathetic cam and compression it was assembled with.

Oh, and lack of H pipe is bad for low end, but I'm sure we've mentioned that already. :p

[dragginwaggin]

i dont kinow exactaly where in nh your are located but the monro muffler in danvers could do something all custom 4 alot less tell them bill sent u. and it is illegal to remove a cat period ( unless it is damaged and being replaced) if the car came with it it needs to be there its a federal thing. unless u convince the inspiction guy to not look under the car. btw cats suck a "x' pipe is better thain a "h" pipe and no cross over kinda hurts bottom end but when its cold u can watch the exhaust go back and forth .

[70torino429]

and it is illegal to remove a cat period ( unless it is damaged and being replaced) if the car came with it it needs to be there its a federal thing. .

its not illegal in new hampshire or massachussetts.

[P72Ford]

In CT it is unlawful to remove a properly functioning catalytic converter. When I had my front pipes made, the guy working on it mentioned this. Thats why I removed the front pipes prior to bringing the car to them.

[zoomie]

This apparently got lost in the problems we had here sunday...but I still had the e-mail notification.



I find this interesting because like I said, I had some glasspack duals on a 78' marquis.
They were long also, like almost 3 feet long, but they did sound good. I did not notice a perfomance increase in the car, going from a single to duals, but it didn't have an H-pipe either. I really liked that car though. I always hear negative about the 400, but that car really like to move out. My dissapointment was that it didn't like to spin the tires, even with an open diff. All it wanted to do when you tromped it was squat and take right off.....which I suppose is what you ideally want.....but at the time I was more interested in smoke-shows.

that would have been me lol i also have some vids up crusin around and a few standstill revs server crashed i take it?

[andymac0035]

Not sure, there is a thread on somewhere.....I'm just too lazy to go find it.

and yes! vids would be nice.

[andymac0035]

its not illegal in new hampshire or massachussetts.

Technically he may be right. A shop (in NH) can't just rip emmissions stuff off on 86+, but like mentioned.....if it's already gone when they inspect it....

Interesting about mass......this car was originally from there. It still had a few emmision certificates in the glove box too. And according to those....they checked to make sure ALL equipment was present......not that it was working......just that it was there.

I already was told by my garage (in NH) that 86-95 was a gray area.....does not need emissions....but they can't tamper with then either.

.......but they can make pipes up for you and sell them too you. ...they just can't install them.

Personally, as long as my emissions stuff is okay, I'm going to leave it be. But it's nice to know I won't have to pay $$$ down the road if things wear out.

[andymac0035]

i dont kinow exactaly where in nh your are located but the monro muffler in danvers could do something all custom 4 alot less tell them bill sent u. and it is illegal to remove a cat period ( unless it is damaged and being replaced) if the car came with it it needs to be there its a federal thing. unless u convince the inspiction guy to not look under the car. btw cats suck a "x' pipe is better thain a "h" pipe and no cross over kinda hurts bottom end but when its cold u can watch the exhaust go back and forth .

Grafton, NH is like an hour north of Concord. I'm not sure where Danvers is (but thanks).
I think I know where I think I'm getting my system, I just need to get my but over there. They are on RT-11 going from Claremont to Charlestown, "Morningside Service Station". They do good work and since they specialize in exhaust they are pretty fast at it. Usually one maybe two hours tops and they are done. I just need to get a day off and get over there to talk to them.

[gadget73]

The not allowing removal of converters is a federal thing, not state. Its purely up to the states to enforce it, but no shop is allowed to just remove them unless its for a replacement. Its apparently spelled out somewhere in the Clean Air Act of 1990, but I'm not digging through the legalese BS to find it.

COnverters that are not clogged don't really harm performance, especially on a stock motor. If you're concerned about it, a high flow converter will do the job nicely without affecting the blistering 130 or so horsepower a stock lopo puts to the wheels.

[packman]

.......but hi-flo cats or better yet no cats sound better; if you like the constant smell of unburnt hydrocarbons.



Packman

[88Vic]

a "x' pipe is better thain a "h" pipe and no cross over kinda hurts bottom end but when its cold u can watch the exhaust go back and forth .

Actually an X-pipe is only better for high end power, an H-pipe is better for low end torque.

[1987cp]

X pipes are actually great at low RPM; their big advantage is that they still work at high RPM where the H crossover tends to be bypassed entirely. The downside is obviously that they're pricier and somewhat more challenging to (and I don't know if there is an off-the-shelf catted X that really fits).