exhaust pipe diameter?? - Toyota Nation Forum : Toyota Car and Truck Forums
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#1 Old 02-10-2006, 12:14 AM
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exhaust pipe diameter??

whats a good diameter pipe size for a 22re with a header, high flow cat, and flowmster muffler?? i dont have any of it yet, but i want to get an exhaust system built with that suff , just dont know what size pipe would be best...

are there any good kits out there that come with everything?

or would my best bet be to get the components and have a muffler shop plumb it for me?

btw, this is for a 94 x-cab, 4 banger, 33x12.5 tires, 4.88 gears

TIA!
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#2 Old 02-10-2006, 02:54 AM
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i wouldn't go any bigger than 2.5 inches.

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#3 Old 02-10-2006, 05:13 AM
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Largest inlet/outlet on the Flowmaster muffler for our yodas is 2.25" (50 Series anyway). Intuitively, wouldn't you want the diameter of the pipes and the muffler outlets to be the same? I am in the process of replacing my entire exhaust system in order to pass inspection; I may decide not to go with a Flowmaster/performance muffler because I don't want to incur the additional expense of larger pipe, especially after finding a salvage stock downpipe(1.75") in great shape w/O2 sensor (which I needed) for $50. Is my logic flawed?

'94 Base standard cab, 2wd, 22R-E, 5sp, 2wd, 160k

Last edited by gr8ful; 02-10-2006 at 05:34 AM.
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#4 Old 02-10-2006, 05:51 AM
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naw your right on. i did mine like this header,no cat with 2 1/4 pipe in to a flowmaster 40 series muffler with single 3 inch out pipe to a single 3 inch tip. its pretty loud but it isnt the annoying buzzy sound its actually pretty throaty and deep.not ricey. the trick was moving the muffler as far back as possible. luckily i dont have emissions here in fl. you could probabally i have a few friends that are cops and they said its not too loud but its borderline. i like the sound personally but i dont reccomend it for a daily driver or if your in to quieter sounding mufflers.
my local shop put it on for 150 bux from the header back,if you have the parts they might do it cheaper. iif you use a cat it might be a bit quieter with the setup i have ive thought about putting one on in case i go back to ohio where they smog test.

Last edited by subliminaltrips; 02-10-2006 at 05:54 AM.
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#5 Old 02-10-2006, 04:08 PM
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I wanna hear your exhaust sometime, sub'. Gotta figure out a way to hook up sometime. I'd love a little throatier sound, and I can't stand the "fart can" sound of ricers. That's my biggest fear putting an exhaust system on a 4-banger.

Have a great weekend,

- Arved

'94 Base standard cab 2wd - 22R-E engine, W55 transmission, 149K miles
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#6 Old 02-10-2006, 06:03 PM
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maby ill rig a mic up so i can record it. its not fart canish but it is pretty loud. iyou can tell its a 4 banger but its not the little bumble bee in a pop can sound like the lil ricer cars. if i could do it again id like to try smaller pipe in the front like 2 inch into the muffler and 3 inch out. well im off weekends so if you ever wanna cruise down your more than welcome, i have a buddy up in gainesville and i go over to daytona alot.
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#7 Old 02-10-2006, 07:51 PM
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the best would be either 2 1/4 or 2 1/2


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#8 Old 02-10-2006, 09:35 PM
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whats the stock diameter anyways?? like 1.75"? lol

looks way small...
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#9 Old 02-10-2006, 11:01 PM
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My setup is Header, no cat, 2.25 piping to a super 40 in stock location. Ive actually gone through 3 setups till I found the best combo. my first setup was header to flow 2.25 piping no cat then a tail pipe straight back to the bumper- sounded great from idle to 3800 then sounded ricey at 4000+ 2nd setup was just like the other one but i chopped off the tail pipe but did a bad job so the outlet was angled up ward sound good but resonated at 2000 my final setup was add 1/3 of the tail pipe back now its smooth through out the rpm range and no resonation.

1992 Hilux 4X4 22R-E Manual, LCE Headers, Epn cam, super 40, and revirginized.


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#10 Old 02-11-2006, 08:24 PM
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Quote:
Originally Posted by gr8ful
stock downpipe(1.75")

'94 Base standard cab, 2wd, 22R-E, 5sp, 2wd, 160k
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#11 Old 02-12-2006, 08:24 AM
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4x4Wire.com's TrailTalk Forums: 22R/RE: Simple power tips
you should read this thread, its really a fAQ about this topic and has some specific answers to your question but futher down the page, not at the top

97 T100 140,000 miles. Very clean rustless southern vehicle. The Bilstiens are nice, Pro-Rack cab protector, back to factory air intake-much quieter - selling the K&N FIPK, PM to make offer.
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#12 Old 02-12-2006, 08:52 AM
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Quote:
Originally Posted by trythis
4x4Wire.com's TrailTalk Forums: 22R/RE: Simple power tips
you should read this thread, its really a fAQ about this topic and has some specific answers to your question but futher down the page, not at the top
A good read, but I found myself skipping around the article. For those of you with A-D-D, the following is the snippet of interest with regard to this thread:

Quote:
But now we need to think about the exhaust system. Improving the exhaust system is number one as far as freeing up usuable power, it doesn't "make" any at all. But the factory needed a quiet, smooth, and responsive engine because the driver might be a little old lady going to the store in Hawaii, or a young fellow driving around at 5000 ft altitude in Colorado. So they compensated for this, and for ground clearence on some vehicles.

The best setup cost wise we have found is to use the excellent factory exhaust manifold, then increase the pipe size to 2" all the way to the muffler, yep, the cat, too. Then we increase again to 2 1/4" on exit all the way back.

This creates a bit of directional flow and frees up power, it fairly quiet and smooth.

- Arved

'94 Base standard cab 2wd - 22R-E engine, W55 transmission, 149K miles
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#13 Old 02-12-2006, 09:00 AM
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Quote:
Originally Posted by trythis
4x4Wire.com's TrailTalk Forums: 22R/RE: Simple power tips
you should read this thread, its really a fAQ about this topic and has some specific answers to your question but futher down the page, not at the top
Quite the link for an extensive discussion on boost, thanks!

As for the exhaust, this is what the link says:

"The best setup cost wise we have found is to use the excellent factory exhaust manifold, then increase the pipe size to 2" all the way to the muffler, yep, the cat, too. Then we increase again to 2 1/4" on exit all the way back".

Power is probably more important than sound, but what do our 4 cyl yotas sound like with a performance exhaust system? I am trying to justify not spending the $; spending $ on a cat might just be all the justification I need!

'94 Base standard cab, 2wd, 22R-E, 5sp, 2wd, 160k

Last edited by gr8ful; 02-12-2006 at 09:15 AM.
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#14 Old 02-12-2006, 03:37 PM
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Arved, great minds think alike - I posted minutes after you without having seen your post!

'94 Base standard cab, 2wd, 22R-E, 5sp, 2wd, 160k
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#15 Old 02-12-2006, 03:43 PM
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