I'm looking at DC AHC6511 and it says it's only for '00-'01 GSR. It should fit on all other Integras except for '94-'99 GSRs right? Just making sure that it'll fit on my '96 RS that has stock exhaust right now.

 

dc sports are junk, save your money

 

Do you have any other recommendations? I'm putting this on a bone stock B18B right now that I was just looking to get a little more mid-range power out of with a few bolt-ons. The reason I was looking at this one is because while it's a 4-2-1 header, it's still one piece so I don't have to mess with gaskets in the middle like other 4-2-1 headers.

 

DC isn't junk, it is decent quality, but don't think of them as a performance header, they are more of a good looking oe replacement for some added bling. I would be surprised if the dyno showed any noteworthy gains. I will tell you that the 1 piece will be a pain in the *** to install compared to the two piece. I am not sure where you got the idea that 2 piece DC headers required messing with.

If you are just wanting to clean up your engine bay, DC would be a good route.
If you are wanting actual performance, a more dedicated full length header from PLM or 1320 etc and a full custom exhaust would probably be a better idea.
Any of these "bolt on" headers aren't going to do a whole lot.

A header like this one is more likely to improve performance:
https://www.privatelabelmfg.com/prod...b18-header.htm

Because it has a long tube design that allows the primaries and secondaries to reach a more optimal length before merging, due to this, they are too long to bolt on to the factory exhaust and would require a custom length exhaust/test pipe etc....

 

I do not think it will fit. The 00-01 GSR has a unique angle for the exhaust-cat flange. That being said, I paid about $20 to have a downpipe cut and welded back on at the correct angle. I think you would need AHC6606 for that model. If you're not in CA, you have plenty of options.
I've had 2 DC sport headers crack at the collector, but in general they are decent products. I have not have any trouble installing a 1 piece header. Slides right in, even with AC.

 

Agreed, it's basically just a lighter and cheaper OEM replacement header. While CAI will make a noticeable difference in sound and power, I could never tell the difference with just a header.

 

I have installed both the 1 piece and 2 piece DC sports headers. The 1 piece definitely takes longer than the 2 piece.

 

Yea I plan on also putting in the Comptech CAI as well when I do the header. For the DC header I mentioned, the dimensions are the same between 00-01 GSR and my 96 RS so I would just need to cut and rotate that flange at the end but if it's really not going to gain any performance than I think I'll go with a better option. That Private Label header that CandyRed linked seems like a really nice one and it's not too expensive either. I'm not too worried about using a CAT as I'll always have the stock exhaust handy whenever I need to pass emissions. But theoretically, if I got a 2.5" CAT and cut the B-pipe shorter to fit, and got an extension for the secondary O2 sensor wire then couldn't I still use that Private Label one with a Cat?

 

Do you already have a full 2.5" mandrel bent cat back exhaust on your car?

 

In my bedroom yes I do lol. I have the JDM ITR B-pipe and muffler.

 

I could be wrong on the mandrel bent part, I'm not sure how the ITR exhaust was constructed but I'm sure it's free flowing enough for my stock B18B

 

https://www.google.com/search?q=honda+dc+sports+cracked&oq=honda+dc+sport s+cracked&aqs=chrome..69i57j69i64.3646j0j7&sourcei d=chrome&ie=UTF-8

And when I received the one I previously ordered, the oxygen sensor bung had a hole in it and they wouldn't warrant it. I had to have it welded. I wound up just going oem.

 

Weird, I have over 100k miles on a dc sports 4-1 one piece gsr header and another 20k miles on a 4-2-1 two piece LS header. zero quality issues.

 

I am pretty sure that that exhaust is 2.36 outer diameter and 2.25 inner diameter, it is mandrel bent though.

 

yes the header for usdm 00-01 GSR should fit usdm 96 RS.

All USDM integra 94-01 LS/RS/GS/ITR and USDM 00-01 GSR have the same exhaust fitment. Only 94-99 USDM GSR have different fitment.

94-01 gsr and 94-01 ls gs exhaust ??? - Team Integra Forums - Team Integra

Greddy Sp2 On 00 GSR - Team Integra Forums - Team Integra

 

I just measured it and ID was just a bit over 2" but that's because of the bottle neck on the ITR b pipes. I'm sure if I was able to measure the ID past that initial bit it would be 2.25"

 

My 2000 Integra LS hatch w/auto:
In 2002 I installed a DC AHC 6504 (4-2-1 ceramic) header on my Integra.
The box that the header came in said that it was for a 97 - 98 Type R.
My Integra, at that time, had its OEM B18B1 engine. I noticed an improvement. Perfect fit and no issues.

In 2012, when that engine started burning oil, I replaced it with a JDM B18B and used the same header. No issues and perfect fit.



A good rule of thumb: if you spend $100 expect to gain 1 HP.

 

Well yeah, thats what i said.