I forgot who but someone said that there's a cheap way to fix this...anyone have some more info?

also, other than that bottleneck, the stock exhaust is fine right? i'm notgonna be running any thing really heavy duty.....

 

cut it off, and have a new part rewelded back on that's larger.

 

And then get a high flow cat.....that will be the last bottleneck.

 

thyanks

 

get a high flow cat,or test pipe..run a 2.5" inch custom exhaust piping, and get a stragiht thru free flow muffler like a apexi n1 or the 2.5" outlet/inlet magna flow which i have on mines and love it..and get a good set of headers

 

https://honda-tech.com/zerothread?id=47625

 

Too bad that's not the only bottleneck in a stock exhaust.... 2 more...

 

Really the stock ITR exhaust is good for keeping things quiet but for performance it lacks. There are a total of 3 bottle necks, the tubing diameter varies in 2 or 3 places and the tailpipe is only about 2-1/16" OD! If anyone plans on just going with the standard USDM DC, etc. 4-2-1 or 4-1 and no cams you should upgrade your cat to 2-1/4" and get a good 2-1/4" cat back system, i.e. Magnaflow. If you're more serious and get a JDM (65mm collector) or one of the US Custom built headers with a 2-1/2" collector, cams, etc.. you should be running the 2-1/2" test pipe or cat and 2-1/2" exhaust or you can get by with a 60mm exhaust with the B pipe modified for a smooth transition from the 2-1/2" ID cat outlet to the 60mm (2-3/8") OD cat back tubing.

FYI- I hope to be testing a new hi flow cat assembly in the next month (depends on how much time is lost in moving the shop) in which I'll be shooting for a 20% flow increase over the standard 2-1/2" 94006 Carsound cat. I'm just not sure if folks will be willing to pay for the extra performance to stay legal???

 

Yeah, I was shocked when I took my muffler off last week. I could not believe my eyes.

 

sigh, well next thing on my list are spoon 4-2-1s...then i guess i'll have to replace the rest of my exhaust system.

any suggestions? i dont want a loud exhaust that attracts attention...so i was thinking of the mugen twin loop but mugen's frigging$$$$$$$$


[Modified by NBP ITR 01-622, 6:46 PM 8/8/2001]

 

I almost bought the Twin Loop! I was so close, but I couldn't pay that much money for an exhaut system.

 

The Mugen is 60mm and then I believe necks down to approx 2-1/4 for the muffler from what I've read.

 

SMSP - when ya movin so you can start testin out the exhaust system? my r's waitin have you seen the RSR/Skunk one? straight back, 1 bend, under axle system? any input on that?

 

Does it go under the gas tank? Or does it make 2 bends and go under the area where the stock small resonator is? For a street car I like sticking with the stock location of the tubing.

Trying to move family, house and shop this month. Plus getting some headers out. It's been crazy to say the least.

 

yeah, under the tank, i got apic here somewhere.
http://www.geocities.com/gtssport/parts/rsrexhasut.jpg - copy and paste to see

hangs kinda low, but has to flow well


[Modified by xjohnx, 10:40 PM 8/8/2001]

 

Maybe for race but that layout is not for me.