megan header issues - Toyota Yaris Forums

whooppee777 · 07-23-2007, 10:21 PM

has anyone had trouble installing their megan header or and weird vibration noises afterwards? what happened to the thread that had the dyno results for the header?

brickhardmeat · 07-23-2007, 10:24 PM

if I'm not mistakin' in chris's diy you need to re-torque them there bolts shortly there after but I ain't no certified mechanic, it could be a cat hung up in there or somethin'

pop the hood

whooppee777 · 07-23-2007, 10:54 PM

his exact words were "retorque to specs" and i couldnt find any specs so i just tightened the bolts. theres a brace on the lower en of the header that i was unable to put back on because the stock bolt didnt fit the megan header. the wonders of aftermarket parts. i think the lack of the brace is whats making it make the vibrating noise. maybe i dunno

Shijima · 07-23-2007, 11:38 PM

Personally, after seeing the thread about the 'gains' from this header I opted out of it, but If I recall someone said megan sends the wrong size bolts, and they had to get some other size.

*Chris07LB* · 07-24-2007, 07:03 AM

Quote:

Originally Posted by whooppee777

his exact words were "retorque to specs" and i couldnt find any specs so i just tightened the bolts. theres a brace on the lower en of the header that i was unable to put back on because the stock bolt didnt fit the megan header. the wonders of aftermarket parts. i think the lack of the brace is whats making it make the vibrating noise. maybe i dunno

You should have gotten all the correct hardware for the install, if purchased from Megan. Seems all the "other" Megan sales people have been getting elsewhere, have had these issues with the hardware.
This may or not be the problem in your case, as I dont know where you got yours from.

The vibration is coming from the heat shield "shell" just above and around the collector area... take your finger and "flick" on edge of the shield, you will make the noise, and see how very flimsy it is.

whooppee777 · 07-24-2007, 12:16 PM

now i see what you're talking about. should i just take that off or what. my friend says i really dont need it. but he is retarded.

Shijima · 07-24-2007, 07:54 PM

Alotof people take it off, basically its just there to say, DONT TOUCH ME IM HOT, to prevent people who dont know how hot the exhaust gets from touching it.

*Chris07LB* · 07-24-2007, 08:56 PM

Quote:

Originally Posted by Shijima

Alotof people take it off, basically its just there to say, DONT TOUCH ME IM HOT, to prevent people who dont know how hot the exhaust gets from touching it.

Thats not the part I am talking about. You are refering to the heat shield bolted to the stock header. Re-read my post, I am talking about the reflective heat shield (attached inside the tunnel) at the collector area. This keeps the floor board from transfering heat from the exhaust, into the car.

The heat shield on the stock header will not, and is not, designed to fit the Megan Header.

cali yaris · 07-24-2007, 09:14 PM

my Megan header did not come with the correct bolts. Fortunately, my friend at the shop had the correct size.

whooppee777 · 07-25-2007, 01:04 AM

Quote:

Originally Posted by cali yaris

my Megan header did not come with the correct bolts. Fortunately, my friend at the shop had the correct size.

hells yea. high five. thats what i had to do and since we were in my friends shop we did the same thing. i'm probably going to take off that heat shield thats above the collector area. wont hurt anything i suppose.

while looking at the engine in my friends place today the shop manager said my engine was shaking too much and that it looked like my engine was miss firring. but it looked normal to me and if it was miss firring wouldnt it set a code, or wouldnt i feel or hear something as a result of it miss firring?

eTiMaGo · 07-25-2007, 01:51 PM

It would be unusual for it to misfire, and yes, it would throw a CEL if it did it. Toyota's intelligent tester tool would be able to tell you exactly if that is the problem, so if in doubt, go to your toyota service center and ask them to check it out. My guess is, because of the low idle of the engine, it could look like it's shaking, once it's warmed up. You could always invest in a torque damper, that will keep things in place

ROCKLAND TOYOTA · 07-25-2007, 03:48 PM

Quote:

Originally Posted by cali yaris

my Megan header did not come with the correct bolts. Fortunately, my friend at the shop had the correct size.

NOR DID JERKRATT'S....

*Chris07LB* · 07-25-2007, 05:28 PM

Those with hardware issues.. were did you order yours from?

I know of knowone from the original Megan GB way back when, reporting any issues. Wondering what's going on over at Megan, or whoever builds these for them. Sucks.

Jerkratt · 07-26-2007, 04:48 AM

actually my friend was an idiot and thought the studs went somewhere else i have since gotten the studs installed still gotta find where the heat shield is being hit

whooppee777 · 07-26-2007, 08:37 AM

do you have a link to the c-one torque damper?

Jerkratt · 07-26-2007, 08:40 AM

of course i think i posted one earlier... let me find it and update this post

EDIT: bulletproofautomotive has them... here

ask c2auto he might be able to order them also

ima go get dressed and try and find that heat shield problem.... be back later

whooppee777 · 07-26-2007, 10:19 AM

it says its for the NCP91 model yaris. would that fit our yaris'? let me know how searching for that noise works out. so i know whether or not to take off my heat collector under there.

Jerkratt · 07-26-2007, 12:31 PM

ok so i went to the dealer today and they said its most likly the donut gasket thingy inbetween the header and the j pipe...... dam i dont got money to buy another donut/gasket.....

07-23-2007, 10:21 PM	#1
whooppee777 I used to have 1700 posts View User's Garage Drives: 2008 Yaris Hatch Join Date: Apr 2007 Location: Maryland Posts: 808	megan header issues has anyone had trouble installing their megan header or and weird vibration noises afterwards? what happened to the thread that had the dyno results for the header? __________________ *First Boosted Yaris On The East Coast*

07-23-2007, 10:24 PM	#2
brickhardmeat Lonesome Cowboy View User's Garage Drives: 2007 WHITE HATCHBACK Join Date: Feb 2007 Location: Inner City, Dallas Posts: 2,995	if I'm not mistakin' in chris's diy you need to re-torque them there bolts shortly there after but I ain't no certified mechanic, it could be a cat hung up in there or somethin' pop the hood __________________ SPONSORED BY

07-23-2007, 10:54 PM	#3
whooppee777 I used to have 1700 posts View User's Garage Drives: 2008 Yaris Hatch Join Date: Apr 2007 Location: Maryland Posts: 808	his exact words were "retorque to specs" and i couldnt find any specs so i just tightened the bolts. theres a brace on the lower en of the header that i was unable to put back on because the stock bolt didnt fit the megan header. the wonders of aftermarket parts. i think the lack of the brace is whats making it make the vibrating noise. maybe i dunno __________________ *First Boosted Yaris On The East Coast*

07-24-2007, 12:16 PM	#6
whooppee777 I used to have 1700 posts View User's Garage Drives: 2008 Yaris Hatch Join Date: Apr 2007 Location: Maryland Posts: 808	now i see what you're talking about. should i just take that off or what. my friend says i really dont need it. but he is retarded. __________________ *First Boosted Yaris On The East Coast* Last edited by whooppee777; 07-24-2007 at 12:56 PM.

07-24-2007, 09:14 PM	#9
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	my Megan header did not come with the correct bolts. Fortunately, my friend at the shop had the correct size. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

07-23-2007, 11:38 PM	#4
Shijima Drives: 07 HB Join Date: Apr 2007 Location: Canada Posts: 110	Personally, after seeing the thread about the 'gains' from this header I opted out of it, but If I recall someone said megan sends the wrong size bolts, and they had to get some other size.

07-24-2007, 07:54 PM	#7
Shijima Drives: 07 HB Join Date: Apr 2007 Location: Canada Posts: 110	Alotof people take it off, basically its just there to say, DONT TOUCH ME IM HOT, to prevent people who dont know how hot the exhaust gets from touching it.

07-25-2007, 01:51 PM	#11
eTiMaGo vroom vroom View User's Garage Drives: lil red 5-door Join Date: Sep 2006 Location: Bangkok, Thailand Posts: 7,744	It would be unusual for it to misfire, and yes, it would throw a CEL if it did it. Toyota's intelligent tester tool would be able to tell you exactly if that is the problem, so if in doubt, go to your toyota service center and ask them to check it out. My guess is, because of the low idle of the engine, it could look like it's shaking, once it's warmed up. You could always invest in a torque damper, that will keep things in place __________________ The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ...

07-25-2007, 05:28 PM	#13
Chris07LB Super Moderator View User's Garage Drives: Yaris Liftback Join Date: Jun 2006 Location: New Jersey Posts: 3,174	Those with hardware issues.. were did you order yours from? I know of knowone from the original Megan GB way back when, reporting any issues. Wondering what's going on over at Megan, or whoever builds these for them. Sucks.

07-26-2007, 04:48 AM	#14
Jerkratt View User's Garage Drives: 08 Yaris Liftback S (RIP 07) Join Date: Apr 2007 Location: Fair Lawn, NJ Posts: 1,378	actually my friend was an idiot and thought the studs went somewhere else i have since gotten the studs installed still gotta find where the heat shield is being hit __________________ "It hurts more when its wet"

07-26-2007, 08:37 AM	#15
whooppee777 I used to have 1700 posts View User's Garage Drives: 2008 Yaris Hatch Join Date: Apr 2007 Location: Maryland Posts: 808	do you have a link to the c-one torque damper? __________________ *First Boosted Yaris On The East Coast*

07-26-2007, 08:40 AM	#16
Jerkratt View User's Garage Drives: 08 Yaris Liftback S (RIP 07) Join Date: Apr 2007 Location: Fair Lawn, NJ Posts: 1,378	of course i think i posted one earlier... let me find it and update this post EDIT: bulletproofautomotive has them... here ask c2auto he might be able to order them also ima go get dressed and try and find that heat shield problem.... be back later __________________ "It hurts more when its wet"

07-26-2007, 10:19 AM	#17
whooppee777 I used to have 1700 posts View User's Garage Drives: 2008 Yaris Hatch Join Date: Apr 2007 Location: Maryland Posts: 808	it says its for the NCP91 model yaris. would that fit our yaris'? let me know how searching for that noise works out. so i know whether or not to take off my heat collector under there. __________________ *First Boosted Yaris On The East Coast*

07-26-2007, 12:31 PM	#18
Jerkratt View User's Garage Drives: 08 Yaris Liftback S (RIP 07) Join Date: Apr 2007 Location: Fair Lawn, NJ Posts: 1,378	ok so i went to the dealer today and they said its most likly the donut gasket thingy inbetween the header and the j pipe...... dam i dont got money to buy another donut/gasket..... __________________ "It hurts more when its wet"

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Megan Header Install [pics]	Chris07LB	Performance Modifications	132	09-29-2010 03:41 PM
Are We Still Stuck With the 4-1 Headers?	Sabretooth	Performance Modifications	31	02-20-2009 08:57 PM
Megan Header Advice	jamal1984	Cosmetic Modifications (Exterior/Interior)	1	02-20-2007 07:22 PM
Weapon-R Header (4-2-1)	CASTREX	Performance Modifications	28	02-19-2007 01:57 PM
GROUP BUY - Megan Racing 4-1 Header...	riceboy	Items for Sale by private party	489	01-10-2007 06:45 PM