2.5inch header to 2.36 exhaust

adamhoud · 03-10-2007, 04:56 AM

Would I see much loss in this? I am considering running an evo2 with my ssr header. I guess this would create a little backpressure.

Razor4ever · 03-10-2007, 05:09 AM

SSR? I thought they werent available yet.

Anyway, I highly recomend 2.5+2.5 setup. 2.36 may cause engine chocking on top end and You'll loose power.

adamhoud · 03-10-2007, 01:28 PM

Yeah, I cant seem to find a decent 2.5 though, most people that advertise 2.5 are actually 60mm or 2.36, and I want one thats not too loud.

reaper702 · 03-10-2007, 04:25 PM

Quote:

Originally Posted by adamhoud

Yeah, I cant seem to find a decent 2.5 though, most people that advertise 2.5 are actually 60mm or 2.36, and I want one thats not too loud.

think the only 2.5" catbacks are the comptech (which i don't think you can find) and the vibrant. correct me if i'm wrong.

adamhoud · 03-10-2007, 04:32 PM

And i hear the vibrant is pretty loud, and comptech is tolerable which sucks because you cant get it anymore.

nofd1977 · 03-10-2007, 08:17 PM

Isnt the other greddy exhaust 2.5. The d2s I think

civic si hb · 03-10-2007, 08:24 PM

The EVO 2 starts off at the flange of the cat at 2.36 and works past that point at 2.76

reaper702 · 03-11-2007, 01:09 AM

Quote:

Originally Posted by civic si hb

The EVO 2 starts off at the flange of the cat at 2.36 and works past that point at 2.76

yes and the sp2 is 60mm all the way (2.36"). they also have the ti-c coming out but is 60mm too.

cappykd · 03-11-2007, 01:54 AM

Quote:

Originally Posted by adamhoud

Would I see much loss in this? I am considering running an evo2 with my ssr header. I guess this would create a little backpressure.

Ask Reliant K20z3 He has the ssr wi an EVo 2 now.. He and I just traded exhausts today. He got my EVO2 and I got his Skunk Mega Loud R.

cappykd · 03-11-2007, 01:56 AM

Quote:

Originally Posted by civic si hb

The EVO 2 starts off at the flange of the cat at 2.36 and works past that point at 2.76

Nope it doesn't. I just took mine off today. It's straight gauge all the way to the muffler. I wanted to believe what people on here had posted but it's not accurate.

fastertyper · 03-11-2007, 04:08 AM

Quote:

Originally Posted by cappykd

Nope it doesn't. I just took mine off today. It's straight gauge all the way to the muffler. I wanted to believe what people on here had posted but it's not accurate.

so its 2.36 the whole way to the muffler?

civic si hb · 03-11-2007, 08:21 AM

Quote:

Originally Posted by cappykd

Nope it doesn't. I just took mine off today. It's straight gauge all the way to the muffler. I wanted to believe what people on here had posted but it's not accurate.

Then i have been fed the wrong info from quite a few websites. Many of them say 60mm-70mm and after emailing them they all said the same thing. That is starts off at 60mm at the flange where that cat is and works it's way up to 70mm the further down the midpipe. If your info is true that very dissapointing. I was looking into getting the EVO2, but want a good size mid pipe where the stock midpipe is 2.0 inches in the bends and 2.25 in the straights.

Dwn4nythng · 03-11-2007, 09:20 AM

I heard the same thing. 2.36, towards the end, right before the bend going over the rear axle is 2.76

Quote:

Originally Posted by civic si hb

Then i have been fed the wrong info from quite a few websites. Many of them say 60mm-70mm and after emailing them they all said the same thing. That is starts off at 60mm at the flange where that cat is and works it's way up to 70mm the further down the midpipe. If your info is true that very dissapointing. I was looking into getting the EVO2, but want a good size mid pipe where the stock midpipe is 2.0 inches in the bends and 2.25 in the straights.

cappykd · 03-11-2007, 09:56 AM

Quote:

Originally Posted by fastertyper

so its 2.36 the whole way to the muffler?

I didn't break out the micrometer but yes Reliant K20Z3 and I both agree it looks straight gauge.. I can see the 70mm difference vs the 60 mm.. we had both the Skunk2 and the Mega Louder r laying next to each other on the ground and the EVO is 60mm.

cappykd · 03-11-2007, 10:03 AM

Quote:

Originally Posted by civic si hb

Then i have been fed the wrong info from quite a few websites. Many of them say 60mm-70mm and after emailing them they all said the same thing. That is starts off at 60mm at the flange where that cat is and works it's way up to 70mm the further down the midpipe. If your info is true that very dissapointing. I was looking into getting the EVO2, but want a good size mid pipe where the stock midpipe is 2.0 inches in the bends and 2.25 in the straights.

Go Skunk2 with the insert.. With the factory CAT and header and insert it's not too loud.. If I wanna Auto-x or 1/4 mile I can just remove the silencer for more power and Mega Loud R...

Razor4ever · 03-11-2007, 01:54 PM

Can someone post a link to the ssr company? or whatever site that sells ssr headers. Sorry for jacking the thread.

Reliant K20Z3 · 03-11-2007, 04:32 PM

yes, there is a definite power loss felt between the skunk2 70mm and the evo2. In fact Cappy and I removed the cat yesterday and put the test pipe back on, and the skunk2 feels better in vtec WITH the cat on, then the evo2 without the cat on. the difference isn't night and day, but is noticeable.

in summary, skunk2 70mm is mega power and mega louder.

however, the evo2 is SUPER quiet compared to the skunk2. this is what i wanted.

maybe i just gotta wait for my car to get used to the evo2 a/f or something, i dunno.

cappykd · 03-11-2007, 04:34 PM

Quote:

Originally Posted by Reliant K20Z3

yes, there is a definite power loss felt between the skunk2 70mm and the evo2. In fact Cappy and I removed the cat yesterday and put the test pipe back on, and the skunk2 feels better in vtec WITH the cat on, then the evo2 without the cat on. the difference isn't night and day, but is noticeable.

in summary, skunk2 70mm is mega power and mega louder.

however, the evo2 is SUPER quiet compared to the skunk2. this is what i wanted.

maybe i just gotta wait for my car to get used to the evo2 a/f or something, i dunno.

Yeah an ECU reset wouldn't hurt...

Reliant K20Z3 · 03-11-2007, 04:41 PM

Quote:

Originally Posted by cappykd

Yeah an ECU reset wouldn't hurt...

yeah, i was gonna do that last night when i got home, but i crashed out cuz i hadn't slept in oh... 36 hours.

just woke up about 1pm today, but feel alot better.

we'll see after I reset it today.

cappykd · 03-11-2007, 04:43 PM

Quote:

Originally Posted by Reliant K20Z3

yeah, i was gonna do that last night when i got home, but i crashed out cuz i hadn't slept in oh... 36 hours.

just woke up about 1pm today, but feel alot better.

we'll see after I reset it today.

find yourself some 100 octane and fillup before you reset.. I have done that a few times and it helps..

03-10-2007, 04:56 AM	#1 (permalink)
adamhoud Senior Member Join Date: Sep 2006 Location: Bay Area, CA Posts: 1,030 Adam iTrader: 3 / 100%	2.5inch header to 2.36 exhaust Would I see much loss in this? I am considering running an evo2 with my ssr header. I guess this would create a little backpressure.

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03-10-2007, 05:09 AM	#2 (permalink)
Razor4ever Senior Member Join Date: Jan 2007 Location: ILL/Europe Posts: 293 iTrader: 0 / 0%	SSR? I thought they werent available yet. Anyway, I highly recomend 2.5+2.5 setup. 2.36 may cause engine chocking on top end and You'll loose power.

03-10-2007, 01:28 PM	#3 (permalink)
adamhoud Senior Member Join Date: Sep 2006 Location: Bay Area, CA Posts: 1,030 Adam iTrader: 3 / 100%	Yeah, I cant seem to find a decent 2.5 though, most people that advertise 2.5 are actually 60mm or 2.36, and I want one thats not too loud.

03-10-2007, 04:32 PM	#5 (permalink)
adamhoud Senior Member Join Date: Sep 2006 Location: Bay Area, CA Posts: 1,030 Adam iTrader: 3 / 100%	And i hear the vibrant is pretty loud, and comptech is tolerable which sucks because you cant get it anymore.

03-10-2007, 08:17 PM	#6 (permalink)
nofd1977 Senior Member Join Date: May 2006 Location: The N.O.L.A. BaBy! Posts: 206 iTrader: 3 / 100%	Isnt the other greddy exhaust 2.5. The d2s I think

03-10-2007, 08:24 PM	#7 (permalink)
civic si hb Senior Member Join Date: Oct 2006 Location: NH Age: 33 Posts: 1,047 iTrader: 3 / 100%	The EVO 2 starts off at the flange of the cat at 2.36 and works past that point at 2.76

03-11-2007, 01:54 PM	#16 (permalink)
Razor4ever Senior Member Join Date: Jan 2007 Location: ILL/Europe Posts: 293 iTrader: 0 / 0%	Can someone post a link to the ssr company? or whatever site that sells ssr headers. Sorry for jacking the thread.

03-11-2007, 04:32 PM	#17 (permalink)
Reliant K20Z3 Senior Member Join Date: Jun 2006 Posts: 417 iTrader: 4 / 100%	yes, there is a definite power loss felt between the skunk2 70mm and the evo2. In fact Cappy and I removed the cat yesterday and put the test pipe back on, and the skunk2 feels better in vtec WITH the cat on, then the evo2 without the cat on. the difference isn't night and day, but is noticeable. in summary, skunk2 70mm is mega power and mega louder. however, the evo2 is SUPER quiet compared to the skunk2. this is what i wanted. maybe i just gotta wait for my car to get used to the evo2 a/f or something, i dunno.