hey i got questions on headers so anyone with headers could you let me know which kind you got and do they really work?

DC sport.
Yea you can definitely feel the diffrence.

Anyone got any metrics for HP gain?

I have the DC Sports header also. While I don't know how much if any gains in HP, there is defintely a noticable difference above 3,500 rpm.

I'm sure someone with more knowledge will chime in.

never got around to goin gto my buddy's dyno like i said i would - but never really needed to, it was an obvious small increase in throttle response/hp/torque - whatever wat you want to put it, as soon as it was installed. I've since replaced the entire system from filter to tip and have also driven a bone stock xB since doing that - and I'd forgetting what gains had been made. The 5spd (like mine) I took down the road was a total slug compared to mine. So yeah, there is a definate improvement

i love my megan racing header. gr8 product. gr8 increase especially for the money

i love my megan racing header. gr8 product. gr8 increase especially for the money

How much was the Megan header? Easy mount?

they were like 120 or 130 shipped. but can be found for as cheap as 115 shipped. they are stainless steel and was easy only 1 minor problem. i had to buy longer bolts to attache the header to teh exhaust.

I just bought a Megan Racing Header (Stainless steel) and should be coming in early next week. Be sure to post how installation goes as well as the different. I plan on recording an audio file of before the header install and after header install.

DC Header, like squirrel said above. The lag / bogg at 3500 is gone.

DC header love-n it!!!!!

Has anyone dyno'd their xB with headers and exhaust on yet? I'm curious to see what kind of gains you're getting. Also, anyone seen any dyno sheets from xB's with the Blitz supercharger kit yet? I'm a total xB nooB here, but not new to modifying cars by any means.

Zach

Has anyone dyno'd their xB with headers and exhaust on yet? I'm curious to see what kind of gains you're getting. Also, anyone seen any dyno sheets from xB's with the Blitz supercharger kit yet? I'm a total xB nooB here, but not new to modifying cars by any means.

Zach

Zach, I haven't dyno'd my xB since the header, but the change is noticable for the good. I know someone who has dyno'd an xB w/ Blitz SC, and the only gain was in torque. Why? Cuz the gain in horsepower was eatin' by the engine turning the pulley for the SC. Sorry to be the bearer of bad news. BUT, I will have something shortly that should be just as good.

Has anyone dyno'd their xB with headers and exhaust on yet? I'm curious to see what kind of gains you're getting. Also, anyone seen any dyno sheets from xB's with the Blitz supercharger kit yet? I'm a total xB nooB here, but not new to modifying cars by any means.

ZachAs soon as I get my new clutch in I am going directly to dyno, and I know that windowtint and rodney ray have no lag what so ever in their exhaust systems. :twisted: Must be the limited edition exhaust systems they have. Nice!! DC all the way, I got it too and could not be happier.

really quick question guys, do you reset the ecu when you install performance parts? i didn't, but i was wondering if i should, so that the eninge could re-learn with the new part installed.

really quick question guys, do you reset the ecu when you install performance parts? i didn't, but i was wondering if i should, so that the eninge could re-learn with the new part installed.
It's aways good to reset the computer when you add mods to the car 8)

Thanks for the input guys. Squirrel, he didn't get any gains in hp at all with the Blitz? If not then it looks like I'll just have to go turbo. I would rather go that way anyway. I have about 4 years experience working with turbo cars so I am decent with them. :) So out of the two companies that are mentioned in here with headers which one is favored, DC or Megan racing? Thanks in advance.

Zach

really quick question guys, do you reset the ecu when you install performance parts? i didn't, but i was wondering if i should, so that the eninge could re-learn with the new part installed.
It's aways good to reset the computer when you add mods to the car 8)

^ And how do you go about doing that??

I learned that when installing my ground wires, I reset my stereo settings...lol, and reset my trip meter.. :cry: (there goes my 2862mile jaunt from Sacramento-Atlanta)

But, what do you do?? just unplug the neg. batt. wire for like 10min and re-attach??

I may sound like a dumbass asking that.. but its a plausible question for others who want to know the answers as well :D

Thanks!

-Tylor

And I present to you... A FAQ!

http://www.scionlife.com/forums/viewtopic.php?t=33062

:D

So, nobody has an answer yet as to which header is preferred? The DC or the Megan Racing??

Zach

I'm sure both designs could be improved upon and both offer average gains.

Considering they are CARB legal headers, I wouldn't expect big gains.

yeah they are about the exact same design so. only difference is the coating. and price.

So, nobody has an answer yet as to which header is preferred? The DC or the Megan Racing??

ZachDC hands down, you don't have to buy any other bolts. Just installs with no problems and its DC. no discoloration in the finish after driving for a while. :D

yeah they are about the exact same design so. only difference is the coating. and price.

So let me get this straight & I'm not trying to be an a$$...

The Megan Racing header is stainless steel & $120

While the DC Sports header is ceramic coated & $230

Yet they're both the same design? Um, I'm no rocket scientist but isn't the Megan Racing header the better of the two based on material (Stainless steel) & cost? :?: I already know DC Sports has good fit/finish but how's the fit/finish on the Megan Racing version? Also, what gains can be expected? Peak only or throughout the whole rpm band? Dyno graph? Thx!

FWIW:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7936208324&category=33631

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7936364313&category=33631

DC hands down, you don't have to buy any other bolts. Just installs with no problems and its DC. no discoloration in the finish after driving for a while. :D

I thought the discoloration (Finger/hand prints during install) for a stainless steel header can be avoided by wiping it down w/a liquid (Such as rubbing alchohol of some sort) before turning on the engne for the 1st time after install? Thx! :)

it'll discolor eventually. as will the dc after a long time. either way it's pretty hidden so i don't care too much about looks. as long as it's stainless it wont rust. neither will the ceramic. both will produce power just about the entire power band. the fit and finish is fine except for the two extra bolts needed. they might have only been needed cuz of my early early header. it may be fixed now dont know. either way all i needed was two bolts and two new nuts. cost about 2.00 or so max. thjey fit the head perfectly it's just that the flange between the header and the exhaust downpipe is thicker so you need to buy new bolts and new nuts. i re-used the springs.

Thx for the info! 8) Do you or anyone else know how much of a gain througout the whole rpm band and also peak hp/tq gains? Dyno graph? Thx!

for some info, the DC ceramic coated header will rust over time. The header is just mild steel, and the ceramic coating will come off after a while. I have a mild DC on my civic and after about a year and a half of use I have rust spots coming through it.

Though it can be sanded and recoated.

Thanks for the info waffles. That's why I think I'll go with the Megan Racing headers. I prefer SS manifolds/headers versus mild steel that has been ceramic coated. I will offer up some advice for everyone. If you order the Megan Racing headers then send them off to JetHot to get coated. You'll be glad you did. It will keep TONS of heat out of your engine bay. It won't look as good. But to me longevity of the header and the wire harness in the engine bay is more important than having a shiny header. Just my .02

Zach

If you order the Megan Racing headers then send them off to JetHot to get coated. You'll be glad you did. It will keep TONS of heat out of your engine bay.

How much will that cost?

A good friend of mine just sent the headers for his V10 off and it was like $150 or $200 for those. I'm sure it would be MUCH cheaper than that for our headers. I don't have their number right now but you can find it easily on the web. JetHot is the company name.

Zach

eh.... for these weak slow not heat generating motors i wouldnt be so worried. well yeah i mean they get hot but nowhere near so hot as to mess with the wiring. just my .02

hotbos05, you are probably right. You have to remember I'm used to dealing with RX-7's. They get hot enough to bake a wiring harness in 6 months. I would rather error on the side of caution than anything else.

Zach

will exhaust checking stations for emissions fail the car then?

Does anyone have any views on the exhaust valve wear after the header is installed? I suppose the ECU will richen the mixture to make up for the better breathing, but will that deteriorate the mpg significantly? Back in the "old" days we had to rejet the carb in order not to burn the exhaust valves after installing headers. Or, are the valves and seats made of more durable materials now?

I wouldn't worry about burning valves. Even if the ECU doesn't compensate and add fuel, I don't see the header taking the a/f past high 13:1s.

Also, a note on Jethot Coatings. They will still flake off over time. But they are well worth it. A good coating is not only external but internal too. These coatings speed up exhaust velocity, which is the name of the game. They also cool engine bay temps, which nomatter what anyone says, does make a difference. You may not see that on a dyno, but driving around with the hood closed, your temps will be lower. Engines still put out heat, and the more you can reduce that heat the better and more efficient you can become.

why do you reset it and what is the negative if you dont?

only negative if you dont reset it is that the ecu will take longer to "learn" the new mod aznd how to run optimially with it installed.

After I had my header installed, I let it idle again for 15 minutes, then drove it 20 miles, then shut it off. I then started it up, and had no problems whatsoever.

A Toyota Tech whom I highly repsect also agreed w/ me about letting the engine idle for 15 minutes after any engine mod, whether it was intake or header.