Dohcgarage Header Test
#81
Team Owner
Originally Posted by jpt
I bet cars that have heavy cosmetic mods get a lot more attention than stock-looking ones, though.
#82
Former Sponsor
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Before everyone jumps on the bandwagon you guys should make sure of the quality of this header and that the hp gains are verifiable. Someone should repeat this by buying the header, doing a dyno beforehand, and the one after the header is installed. I'm not saying the original poster is lying but you have to be careful b/c it could be a marketing ploy. Let someone verify the gains first and see if they are reliable.
#84
Drives With Hands
Originally Posted by jpt
Never underestimate the stupidity of bureaucracy
I moved from CA to MA right around when MA adopted CARB's methodologies. indeed.
#85
Burning Brakes
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Originally Posted by Excelerate
Before everyone jumps on the bandwagon you guys should make sure of the quality of this header and that the hp gains are verifiable. Someone should repeat this by buying the header, doing a dyno beforehand, and the one after the header is installed. I'm not saying the original poster is lying but you have to be careful b/c it could be a marketing ploy. Let someone verify the gains first and see if they are reliable.
#86
Burning Brakes
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Originally Posted by rmpage
Hah, that's really all you need to say to explain CARB to out-of-staters. While there is probably at least some meritorious intent, like most everything else (firearms), the laws are written by complete idiots without even a basic understanding of the technology they're trying to legislate. The result is a bloated bureaucratic nightmare that accomplishes absolutely nothing other than aggravating consumers and costing taxpayers a ton of money.
#88
Former Sponsor
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Originally Posted by jpt
This is exactly why I ordered it and will be doing a before/after dyno at a reputable shop that did not sell me the part. I'll post results soon -- if it's good, you might want to consider getting this part in stock, as it's significantly cheaper than the DC header and looks to be of nicer stainless construction. I'm sure lots of AZers would be much happier to buy it from a trusted AZ vendor than some random ebay store
Thanks for thinking about me though!! I appreciate it. I will try and help where I can.
#89
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Originally Posted by Excelerate
Well we will have to see how well they hold up and if anyone has fitment issues. I have had some experiences with new header(s) before and they started out all well and good and then ended up in disaster.
eh, screw it, if it breaks i'll suck it up and buy the comptech one. anybody want to buy a nearly-new stock header?
#90
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Originally Posted by jiggaman
got my comptech header installed today and am very please, nice compilment to the hondata reflash
I love the comptech headers, I first got rmatic's fujitsubo exhaust and had fun with the consistent powerband, and response. Then added headers and got more reving power and now im just waiting for hondata...
darn AT05
Personally I stuck with comptech becasue only one person on this forum had issues with their headers and got it fixed.
#92
Originally Posted by jdmturtleracin
First Dyno (Saturday Night)
First Dyno Numbers
And Final Numbers Over the First. Enjoy!
First Dyno Numbers
And Final Numbers Over the First. Enjoy!
I'd have to admit I'm a bit skeptical as well. 14 whp is nearing 20 hp at the crank, which is in race header territory.
What was the temp/humidity on run 1 compared to run 2? I think we've seen from JTso's dynos that simply doing a run on a cooler day can result in significant differences.
Either way, good find.
#93
What was the temp/humidity on run 1 compared to run 2?
Tuesday (today): Went back to the same dyno, same tank of gas, same everything besides it was 3 degrees hotter and a little less humid. Strapped her down again and she spun the rollers at a tune of 171.6 HP.. my opinion was, that impossible!! but we rolled it again and 170.6 HP.. Still not a believer, 170.4 HP... okay... three runs, same dyno, same everything. I'm amazed. Well folks, i knew the car felt faster, but damn.
#96
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Originally Posted by MrHeeltoe
China special.....they work and fit, but overally quality is a little bit of a crap-shoot.
#97
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Originally Posted by curls
Looks like delzubo parts jacked the price of this header on eBay already! $189 flat, or $199 for Buy-It-Now
Argh.
Argh.
edit: ktlperformanceparts has a similar-looking header for $150+shipping. However their description states that "A header supplies the fuel/air mixture to the cylinders from the engine." so I don't know if i'd want to buy anything from them
#98
Someone stole "My Garage"
Originally Posted by jpt
The vendor of this particular part (the one I got, which we suspect but are not sure is the same as the one jdmturtleracin got) is in Texas, and the manufacturer he claims to have got it from is in Texas too We'll see!
#99
Former Sponsor
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Originally Posted by jpt
The vendor of this particular part (the one I got, which we suspect but are not sure is the same as the one jdmturtleracin got) is in Texas, and the manufacturer he claims to have got it from is in Texas too We'll see!
Sorry man, I am not buying it.....you can't get a piece like that made in the USA for that much $$ retail to the public. You could not even wholesale it for that much and make money.
#102
Former Sponsor
iTrader: (1)
Originally Posted by jiggaman
texas is pretty close to mexico, maybe its made in mexico?
Haha, that's a good theory.
Does the exhaust smell like bean-farts, rather than burned rice?
Honestly, I have seen a lot of this tier of product out there and they certainly perform well and the $ fits the pocket. But is like a Mustang. Faster than a TSX, for less money....but I still would not buy one.
Marcus
#103
Originally Posted by MrHeeltoe
Sorry man, I am not buying it.....you can't get a piece like that made in the USA for that much $$ retail to the public. You could not even wholesale it for that much and make money.
To the thread starter: Can you check if a magnet will stick to the header?
#104
Flex pipe
whoever gets the next one of these, please compare the
flexibility to the stock part.
This is DC's downfall, without the flexible flange joint, the
flex pipe section at the cat flange has to be flexible like
the stock part.
flexibility to the stock part.
This is DC's downfall, without the flexible flange joint, the
flex pipe section at the cat flange has to be flexible like
the stock part.
#106
Matell
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Originally Posted by TSXTuner
whoever gets the next one of these, please compare the
flexibility to the stock part.
This is DC's downfall, without the flexible flange joint, the
flex pipe section at the cat flange has to be flexible like
the stock part.
flexibility to the stock part.
This is DC's downfall, without the flexible flange joint, the
flex pipe section at the cat flange has to be flexible like
the stock part.
I can only assume I drive harder than most to be on my third section of flex, or I have some strange torque monster!
#107
Senior Moderator
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Originally Posted by Matell
I agree. I've gone through two sections of flexpipe, and am on my third. The lack of 'give' in the flex section is the real weakness of the DC design, and any that copies it without improving the flexibility.
I can only assume I drive harder than most to be on my third section of flex, or I have some strange torque monster!
I can only assume I drive harder than most to be on my third section of flex, or I have some strange torque monster!
#108
Drives With Hands
Originally Posted by chuson
Guys, should I ditch my DC header and get this??? The result looks promising, just not sure the quality. But SS should still be better than Ceramic??
In any case, I'd also wait and see if these results can be repeated, and then for a few months at least to see if any longevity issues develop. Then, and only then, would I consider spending a sizeable portion of money to upgrade your car by a tiny amount that you likely won't notice in terms of palpable performance.
#110
Matell
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Originally Posted by JTso
What kind of flex pipe did you use as replacement? Any pics?
It's dual inner and outer wire braid over the flex section, but is a little shorter than the DC original making it a little stiffer, even though the flex itself is easier to bend.
I've discussed pre-emptively with them doing something similar to what you've done JTso with your FI mod DC . The plan will be for them to cut out the section from the flange forward to the 2-1 merge, weld in a new larger diameter pipe (probably a little smaller than the Honda OEM diameter)with a larger diameter+longer section of flex, and reposition the Primary A/F.
Hopefully this will yield an increase in durability, plus a low rpm torque gain.
#111
Drives With Hands
Originally Posted by jiggaman
thanks for reccomending that shop rmpage, those guys did a good job
#112
Matell
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Originally Posted by JTso
What kind of flex pipe did you use as replacement? Any pics?
First Fix
They applied protective paint on this first fix.
Second Fix
No protective paint. Will have to fix that up.
#113
T.DoT P.I.M.P. lol
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Originally Posted by rmpage
No, don't. You already have a good header in there that you've paid for, and to have installed. The DC header probably got you another ~10whp, which is so close to what this gave the OP that it within the margin of different dyno methods, auto trans temperature, air temp, humidity, etc.
In any case, I'd also wait and see if these results can be repeated, and then for a few months at least to see if any longevity issues develop. Then, and only then, would I consider spending a sizeable portion of money to upgrade your car by a tiny amount that you likely won't notice in terms of palpable performance.
In any case, I'd also wait and see if these results can be repeated, and then for a few months at least to see if any longevity issues develop. Then, and only then, would I consider spending a sizeable portion of money to upgrade your car by a tiny amount that you likely won't notice in terms of palpable performance.
Also my CEL came on for 4 days, and disappear today??? (On and off twice today) why? I didn't reset the battery. I'm guessing it's from the High-Flow Cat.
#114
Matell
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Originally Posted by chuson
Thanks for your good advise~!!! Temps dropped about 15C compared to last week. The car seems to pull alot harder.
Also my CEL came on for 4 days, and disappear today??? (On and off twice today) why? I didn't reset the battery. I'm guessing it's from the High-Flow Cat.
Also my CEL came on for 4 days, and disappear today??? (On and off twice today) why? I didn't reset the battery. I'm guessing it's from the High-Flow Cat.
My first DC failed flex was just like that. It seemed to pull harder (though in your case temp will also contribute) and then I had sporadic CEL's before after about a week it was on permanently.
#115
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wow so what is this problem with the dc headers....it seems serious. so are you guys saying the dc headers has to be fixed before use? ive never heard of this before. please give me some more info of this issue because i was really close to ordering it . liek today. lucky i got a hold of this. thanks
#116
Matell
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Originally Posted by WlcTL
wow so what is this problem with the dc headers....it seems serious. so are you guys saying the dc headers has to be fixed before use? ive never heard of this before. please give me some more info of this issue because i was really close to ordering it . liek today. lucky i got a hold of this. thanks
The second generation is the type I have. It corrected the problem the first had. I'm not sure how many others have had problems with the flex as I have on the second gen, where the corrugation of the flex has actually cracked through.
My problems may be due to the fact I drive my car hard most of the time, it gets driven long distances daily, and occasionally see's track use.
Use the search function and you'll see several lengthy threads on the problems people have had with DC, but also note that there are people who've never had a problem.
Value for money based on the gains and what they cost, they're brilliant. If you only ever drove on the weekends they'll probably be fine, however based on my own experience I personally wouldn't ever buy another DC product or recommend them.
#117
Matell
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Better get back on topic, and not hi-jack the thread to be another analysis of the failings of the DC design for which most companies have copied. (ie. OBX - Stainless DC copy, and this new one which looks to be a better quality than OBX - stainless copy of the DC)
#118
Driver/Detailer
Originally Posted by Black_6spd
Good point. Makes me wonder about which stainless alloy they're using.
To the thread starter: Can you check if a magnet will stick to the header?
To the thread starter: Can you check if a magnet will stick to the header?
#119
Team Owner
Originally Posted by jpt
However their description states that "A header supplies the fuel/air mixture to the cylinders from the engine." so I don't know if i'd want to buy anything from them
#120
Drives With Hands
Originally Posted by chuson
Thanks for your good advise~!!! Temps dropped about 15C compared to last week. The car seems to pull alot harder.
Also my CEL came on for 4 days, and disappear today??? (On and off twice today) why? I didn't reset the battery. I'm guessing it's from the High-Flow Cat.
Also my CEL came on for 4 days, and disappear today??? (On and off twice today) why? I didn't reset the battery. I'm guessing it's from the High-Flow Cat.