Hey hotrod I just had a though...
between my 2 cats is 3" piping...uhm, is it legal to just run the front cat and then run new 3" pipe back? Is it possible to increase the inlet/outlet holes on flowmaster mufflers? I think mine now has a 2 1/4" or 2 1/2" pipe going after the 2nd cat...

1995 F-150XL SC/SB
http://members.sounddomain.com/blind
5-Star Rated F-150 (Big Stereo)

 

To tell you the truth I don't rightly know. I know mine is all the same as it was. I did have to do some very creative thinking on mine to use the Flowmaster y-collector though. But mine is all the same as stock. So I have no idea.
If I could figure out some way to get an audio file of the way my truck sounds and send it to you, I would. I'll try that when I get back though. I have to leave in the morning for Arizona, to pick up that 65 F-100 that's on my website.




[link:www.geocities.com/hotrodford_88/|Hotrodford_88's Webpage]

[link:www.geocities.com/hotrodford_88/1965_F100.html|Hotrodford_88's 1965 F-100!]

[link:www.westlakevfd.org|Westlake VFD Website]

 

Hey, KevinT, you live in Cali and you're wondering If you can remove a cat? Are you high or just joking? I hope just joking.

I've looked at the 3" pipe between the convertors, too, But what I've just thought of doing Is buying a cat that is made to replace the front and rear cats with 3" inlet and outlet and just having the local Muffler guy mend up the Y pipe.

Right now I have 3" pipe after the convertor, but it still is choked by that damned second convertor. Gonna fix that with my tax refund...

Hope my rambling helped...

 

Sounds like you're planning teh same type of setup I did.

I have the High Flow cat, but I ut mine where the original second convertor was. In place of the front convertor I put in a Flowmaster Y-Collector. (picture below) And then installed the Flowmaster system that I had built at the local muffler shop.

The only downside to my system? A muffler shop won't touch my convertor with a 10 ft pole! Mainly because everything was done with driveway engineering. But if you only gave the exhaust a quick glance you wouldn't even notice the Y-collector.

http://www.flowmastermufflers.com/fmtest/IMPTS/y-collector.gif


[link:www.geocities.com/hotrodford_88/|Hotrodford_88's Webpage]

[link:www.geocities.com/hotrodford_88/1965_F100.html|Hotrodford_88's 1965 F-100!]

[link:www.westlakevfd.org|Westlake VFD Website]

 

Whoa $120?!
Thats about how much I've spent on my exhaust so far...do you really think a single high-flow cat will sound any different? I say different because I'm sure it will be louder with 3" pipe, but I want the lopey idle, heh. My LAST OPTION is to get a new cam, something that runs in the 2k-> area so that it would idle rough and be nice and lopey...but then I might have starting problems and such right?

1995 F-150XL SC/SB
http://members.sounddomain.com/blind
5-Star Rated F-150 (Big Stereo)

 

I went to a muffler shop just now (extremely trustworthy, called muffler time) and the owner of the place said that he could indeed punch the flowmaster out to 3" and I could go 3" cat back with ease, for $60. Any thoughts on how that would sound hotrod?

1995 F-150XL SC/SB
http://members.sounddomain.com/blind
5-Star Rated F-150 (Big Stereo)

 

We get them up here in Abilene Texas also Hotrod, I have nicknamed them "fart cans" for the noise they make on a 4 or 6 cyl. vehicle lol.

Brad Godkin
1986 F350 CC/SRW
6.9liter/C6

 

Hey look fellas,I have a '93 F-150 with 5.0 and E4OD tranny.I have bassini equal length shorty headers,a bassini 3" y pipe going into an ultra high flow cat and then out to a flowmaster 3" cat back exhaust system.I've noticed a loss in low rpm torque.After talking with several ford mechanics,motorheads and the like,they've all told me pretty much the same thing and that is with the 3" exhaust after the cat and all the way back I have too much flow and not enough back pressure.That's why I've lost some of my low end torque.They all said that unless a small block is very heavily modified{like a race motor} or you have a big block don't go with 3" exhaust.I was told the ideal set up would be what I have with headers,Y-pipe and high flow cat but then go to 3" inlet on the muffler and out dual 2.25".This way I would have high flowing exhaust but,with enough back pressure so that I wouldn't lose my low end torque.So soon I'll be getting rid of the 3" flowmaster and go to a 3" in and dual 2.25" out to 3.5" or 4" echo tubes behind each rear tire to have that dual exhaust look and sound.Hope this helps fellas.3" is just a little too big for the most part.Later,Cleve

 

KevinT: could you find a smoglegal cam with that kind of profile? if you can, lemme know, but for all I've seen there's nothin that would give you a serious lope. remember: computer controled, OBD.

ckb2steelers: Did your engine ever make any low RPM torque? My 302 doesn't get moving until I get over 2500RPM, and I've come to grip with it. question about the Bassani y pipe...are the tubes running from the headers to the Y 3"? or just when they meet at the Y in goes to three? I'm not messing with the pipes from cat to manifold, and Like it as been noted, there is that 3" pipe after the first cat in stock form. Clearing up the bottle neck there would be too much flow? explain...


1989 F-150 : 5.0, shorty headers, Flowmaster cat-back, K&N filtercharger intake, March pulleys, "Multi-brand" performance ignition, soon to be Mass-Air...doesn't know she's not a Mustang

 

What I did was cut the back cat off (leaving the 3 inch pipe). Put on a reducer down to 2.5 inch, put on a 2.5 in/out turbo muffler and then dumped it in front of the rear tire. Works pretty good but I think the cat I left in is clogged.
Cost me a total of $40 in parts.

Roger Lane
Test Analyst
Sr. Automated Test Engineer
IBP, Inc.

 

Regarding the 3" piping...thats EXACTLY what the muffler shop guy told me...so right now my setup is done, and I'm happy with it (just brought the new lopey, loud, beast home)

Stock headers, down to the first convertor, to 3" pipe, second converter, to 2.5" pipe (gotta have backpressure somewhere) 40 series flowmaster 2.5" in 3" out, 3" turn down...so Basically I had my turndown pipe size increased to 3". IT SOUNDS AMAZING!

Before my geuss is the engine was being choked by the bend in the turn down, 2.5" pipe bent down and it was about 1 3/4" at the bend because it was press bent. Now with the 3" tailpipe I got tons of engine sound, and LOUD! I will be putting a wav file on my website soon

Hotrod, to put wav file on web:
Camcorder or tape recorder, whichever you have, get a friend to hold it about 5' away from tailpipe, start engine, rev to 3k then stop the tape (so we can have a comparison in sound ok?)
Take camcorder or tape player into computer, get a RCA cable with a stereo jack on one and, and red/white composite connector on the other to go to camcorder or tape player, if you tape recorder has a wacky connecter just go to radioshack, might be $5 for one, just tell them you want to hook to recorder up to a PC and their know. Now just plug it in, open up sound recorder on the PC and hit play on recorder, and click record on the program, record till its done and click stop, play it back and see what it sounds like, when you quit the program it should prompt you if you want to save the file, click yes and save it somewhere, then upload just like you would a jpg to your website, and add a link to it like a URL link ( A HREF=exhaust.wav> click here to here my exhaust!</A> for example)

Yah yah I know I'm a computer geek, so I hope you can understand all that (I work for DTS by the way...Digital Theatre Sound, or the DTS Surround sound systems in houses and stuff? I am the assembler and tester of the DTS-6 channel (5.1) decoder for movie theaters, only 8 people have ever built them, so chances are if you go to the theater and it says DTS on the screen, you're listening to something I had the pleasure of building and testing)

1995 F-150XL SC/SB
http://members.sounddomain.com/blind
5-Star Rated F-150 (Big Stereo)

 

[font size="1" color="#FF0000"]LAST EDITED ON 20-Jan-01 AT 07:04&nbsp;PM (EST)[/font][p][font size="1" color="#FF0000"]LAST EDITED ON 20-Jan-01 AT 07:00 PM (EST)[/font]

Hotrodmex,to answer your question as to whether my truck ever had torque down low.Yes ,it seemed like it had better low end torque before.Hell my truck came with 3.55 gears and 31's stock and I didn't have any problem lighting the tires up.I now have 33's,I know big difference;but I also have regeared to 4.10's.Now it won't even chirp em.It wouldn't turn em over with the other gears and 31's after putting on the 3" flowmaster catback.It does seem to pull harder in the mid to upper RPM range though.As for the bassini y-pipe.It is 3" from the headers to and thru the y into the cat and then out to the muffler.What I like about the Bassini headers and y-pipe are that they are stainless.Headers are ceramic coated also.Y-pipe is 304 stainless.The headers and y-pipe have helped when I pull my boat.It just takes a little to get up to speed.Once there I can cruise 75 to 80 mph with no problem.That's pulling right at 2 tons of boat.But ,as I said before I just want to get some more low end torque.Maybe I'll have to go to a different cam.We'll see.By the way what kind of intake do you have and what's the size of your flowmaster exhaust?Talk to me some about this switch over to the MAF setup.How's that help with the mods?I mean I know that it's better for recognizing mods but,tell me more.

 

I have dummy dual's w/o muffler and 2.25" pipes with the same echo tips as that truck. That truck is identical to a "t" except mine's twotone brown instead. My tips are rusting terribly. I'm planning for another setup this spring. I've gotten quotes for around $250 with a Flowmaster 40 and just duals.

It really doesn't matter what size pipe you go with, the convertor let's out the same amount of oxygen either way. Of course bigger is better, but just remember that. Generally larger pipes push the torque peak up the graph, which is a no-no with a truck. I have the same header's as hotrod_88. I noticed a tad more low-end torque with mine.

My 1989 F-150 4x4 302 has true duals with a 2" pipe and no convertor with turbo's. It has better low-end but less top-end with the same gearing. The only problem I've encountered so far is during WOT the check engine light blinks. I'm lost there.



Pastmaster's 1993 XLT 5.0 E40d 3.55LS Normal Cab/Long bed Loaded from the factory with aid of...MSd 6a ign/s.p. wires, blaster coil, Hypertech Chip, K&N filtercharger, Cat-back dual exhuast w/o mufflers, 3.5", echo tips, Accel distributor cap, Dark Mocha over light mocha. 5% Dark tint, Alpine Cd player/remote, Pioneer speakers.

toydestroyer1(No Email Addresses In Posts!)

 

Kevin,

I'm sorry about not answering you man, I've been out of touch for the last four days. Mainly because I've been enroute to and from Arizona! I know, a fun-filled four day whirlwind trip to Arizona?

Yeah, I went to go pick up the 65 F-100 I just bought! I love it, even though I'm not really comfortable driving it right now. But that will be fixed tomorrow, with the help of my Father, and a little backyard, shadetree mechanical engineering!

Sounds like a good deal on your truck man, I'll probably work on that Monday at the latest. I have a little work to do on this other truck this weekend before I go start the title & registration paperwork on Monday.


[link:www.geocities.com/hotrodford_88/|Hotrodford_88's Webpage]

[link:www.geocities.com/hotrodford_88/1965_F100.html|Hotrodford_88's 1965 F-100!]

[link:www.westlakevfd.org|Westlake VFD Website]

 

That `65 Looks more like a cruisor than anything, hehe
Yah grand total for the bigger pipe on my truck to fix the sound was $20...so I'm pretty damn happy, I would have just cut off the turn down and run straight out of the muffler, but it aims almost directly at the axle and the rear gas tank...big no no to aim super heated gas's around axle bearings and fuel...

1995 F-150XL SC/SB
http://members.sounddomain.com/blind
5-Star Rated F-150 (Big Stereo)