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Discussion Starter · #1 ·























One of my friends was gracious enough to have bunch of people over for a mod day. Seafoam/viynlwrap/etc. You'll see like three black mustangs in the picture, mine is the one in the garage haha.

The installation took 12 hours. No exaggeration. The bolts are just too tight and not having air tools sucked BIG TIME. My arms are full of scratches/cuts/burns. This is no ordinary one person job.

If you are on the fence about getting headers, get it done professionally. I can't stress this enough. I really did it with friends for experience and man it was quite an experience.


Quick review: StainlessWorks headers/xpipe

The quality of these pipes are amazing. You can look inside and you KNOW it's made for more air flow. It's just pure sex.





A quick shoutout to Jayman, he owns HyperMotive Performance and man he is straightforward/best price/good communication.

I noticed this on my exhaust and I actually saw them on other mustangs as well, why is this part of the exhaust bent?

 

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Awesome brother, glad you like. Those are the resonators, just more restriction ford puts in their exhaust.
 

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Resonators, they are shaped that way for a reason, just some sound wave management I would guess. Every mustang's resonators look like that.
Great job on the install man!
Did you guys lower the k member?
What was the process you used?
Share some knowledge man :D And MOST OF ALL, Where are the before and after clips?! :D
 

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Discussion Starter · #4 ·
Awesome brother, glad you like. Those are the resonators, just more restriction ford puts in their exhaust.
Ohh I see. Thank you Jason!


Resonators, they are shaped that way for a reason, just some sound wave management I would guess. Every mustang's resonators look like that.
Great job on the install man!
Did you guys lower the k member?
What was the process you used?
Share some knowledge man And MOST OF ALL, Where are the before and after clips?!
Haha sorry about that. I didn't know if anyone would bother to read the write-up.

After jacking up the car, we disconnected the negative terminal battery and the strut tower brace. I was so dumb to disconnect all four of them so my struts came loose. It was PITA putting it back on but we managed.
I took off the plastic cover on the engine and basically took out the stock intake.

At this point, just go ahead and take off the battery. It's pointless to do this step later! And take the plastic battery holder thing under the battery too.

We took off the midpipes. We took off the steering linkage. We took off the engine mounts. We took off the heat shields.
Lots of taking off things. You will need all the room you can get. If you are going to get tired/frustrated and are gonna stop in the middle, DON'T even think about doing it yourself. Get it professionally done.

It may sound easy when I say you just take certain things off but finding and taking all the bolts off is the hardest part of the installation. Some of the nuts may be partially rusted or let's just say...Ford likes to overtorque their nuts. Also some of the bolts are SO long. It just takes forever taking the nut out and in.

*I apologize if some of these steps are in mixed order, I am typing them as I remember.

We used a floor jack to lift the engine. We put a phonebook in between.

Starting with the drivers side,

man, good luck getting your tools in there to reach the header bolts. Only thing I can say is make sure you have a variety of extensions/adapters/wrenches/ratchet. You will need it if you want to be able to reach.

I saw in a BBK headers installation video, they were using hand-held air tool and made it look really easy. I was tempted to get one myself during the installation but what got me thinking was will I be able to even fit the tool when I already have a hard time working with hand tools.

There are like 8 (I don't remember exactly) header bolts. Some you will have to get it from underneath, some from the engine bay.

BEFORE you take off the header on the passenger side, make sure you take off the bolts on the starter and let it hang. This will seriously free up some space for you to reach the bolts. We did it the other way. We took off the header but we couldn't get it out because the starter was in the way. Use the installation guide!

My friend was very insecure about using stock manifold gaskets. Last thing you don't want happening is having a leak and having to do the installation all over again. But most people use stock ones and so did I. No leak so far.

From here on, it's just following the instructions. To speed things up, I was putting the headers back on while my friend worked on the midpipes.

Just make sure you put all your nuts in a safe place. We ended up going to Home Depot to buy 2-3 header nuts.
Just make sure you put back whatever you took out.
If you are using a floor jack, the jack might start giving out so just watch out for that. What helped us was raising/lowering the engine as we need the room. Just make sure you don't drop it too hard.

12 hours and we were in a hurry (at least towards the end). We were all doing different tasks and my car ran funny because my friend plugged in the MAF air flow sensor after I turned on the car or something. It ran like crap and the rev wouldn't even go up higher than 1.5k. I reset the ECU by disconnecting the battery once more and putting it back on. Then it worked fine.

I am getting my cai/tune tomorrow so I am not going to be driving the car until then. I did drive it home (keep it low rpm, being very gentle) but everything else was fine. You will get a check engine light. You can clear it if you already have a tuner or if you are planning on getting one.

I will post a before/after video after I get my intake/tune.

Several things I am remembering now*

-Make sure you are super careful with the sensors. They are expensive to replace and they can easily break. Make sure you know which is for which.
-You are gonna see some smoke when you first start the car. It's just the stuff in the headers and x pipe come out. But I think for me, it was partially from the car running rich. Or lean. I forget the difference haha.
 

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I sure did. Drooled a little and had to change my shirt :p
What do you have for mufflers?

How do you like the exhaust setup after the headers?
 

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i dont think i will ever go with LTs, but if i do, i want it to sound like that
 

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Did u do the cat back as well??
 

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Discussion Starter · #11 ·
Okay so for my mufflers..I got it custom done like 2-3 months after getting the car. I think it was Flowmasters. I liked the sound and all but wanted it louder. Like a month ago, I decided to get straight pipes (just at the tip, so I still pass emission). It was ok....I felt like a lot of you guys didn't really "dig" the raw and obnoxious sound of the straight pipes..

Anyway, after headers and x pipe, it was just WAY too loud. I mean I like loud...but straight pipe just killed the good tone of the exhaust. So I put the Flowmaster mufflers back on. So now it's very deep, not crazy loud but loud enough, and it sounds like a muscle car.

I got it dynoed today. This is my stock dyno:



This is what I put down today (5th gear),




I am very satisfied with the gain. Lots of people were expecting 410-420 but the thing is I dynoed on the low side stock...and I know every car is different. I am happy with my baby and I am happy with where it is now. I do occasionally hang with the local mustang group and man...lots of fast people.

I guess I could have juiced out like 3 more horsepower if I put some Royal purple LOL! but I still had 1k till next oil change (change every 3k) and I use mobil 1 so eh...didn't feel like spending the extra money.

I saw other mustangs dyno in 4th but mine just got just a better number in 5th...could it be my gear ratio? I have 3.31 and I like them as is now..I know lots of people go for 3.55 and 3.73 for more tq and all but this is my DD and I think it's perfect the way they are.


*I have JLT cai/bama tune/headers and xpipe
 

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Don't BAAAAH 'Til Goatsday
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Good numbers! With a bama tune. That's right on the money. With a AED or Lund tune you would even pick up more.

I know what you mean with exhaust tone quality. O/r x changes the hole sound.

These cars have a ton of sound dampening insulation.

If you have not man, have some one drive your car. And hear it from the outside. I can almost Guarantee you'll love it :)
 

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Your pulls are right where they should be.
Alot of them dyno in 4th because they think it's 1:1 or have to since these cars are limited(you'll top out 5th easily with those gears w/o a tune). Our 5th gear is our 1:1.
If you are planning on adding any type of FI, I would leave the 3.31's in.
 

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Discussion Starter · #15 ·
Thanks a lot guys... really appreciate all the input.

Have a few friends with 5.0s in the area and we are all pushing slightly over 400. A friend of mine said he's doing throttle body and under pulley....will these really help?
 

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Thanks a lot guys... really appreciate all the input.

Have a few friends with 5.0s in the area and we are all pushing slightly over 400. A friend of mine said he's doing throttle body and under pulley....will these really help?
a throttle body is one of the last modifications i usually recommend to customers.

i am making 1000rwhp through the stock tb still
 

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Discussion Starter · #17 ·
a throttle body is one of the last modifications i usually recommend to customers.

i am making 1000rwhp through the stock tb still
Wow, why do you recommend it last? I am just wondering.

Also what are other good bolt ons for these 5.0s to make decent power without going FI?
 

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I cut the res out of my car the other day with the gt500 axle back and couldnt believe how much those things weigh,felt like around ten pounds each.
 
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