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Hey guys,

I picked up my 2011 Mustang GT 5.0 at the end of last summer. I'm about to pull the trigger on:

1) Kooks Long tube headers with catted H Pipes.

(Question 1) -I've been reading that the X-Pipe gets better gains but it's negligible, and I want the deep muscle car sound rather than rasp. Do you guys agree?
(Question 1a) -Also what are the differences vs getting these option catted or not?

2) JTL CAI

(Question 2) -I was looking at other CAIs, and I asked the shop what they thought about the K&Ns ... he told me they were too small and I need a bigger one for the setup I want, and JTL is the way to go. Do you guys agree?

3) Borla S-Type axleback exaust

(Question 3) -I bought the car with flowmasters installed, but I want something with less drone and deeper. He said this was the way to go. I've heard some people have a similar setup to me, but they have the Borla Type S Catbacks instead of the axlebacks....what would the difference be if I changed this setup to that?

4) Then obv getting it tuned. I'm going dyno tune it rather than an emailed canned tune.


..So aside from the questions I had above, a few more questions:

(Question 4) What kind of gains in HP and torque do you guys expect from the above set up?

(Question 5) What would you next upgrade be after this? Which power upgrade (Manifold Intake? Cams?)? .. Which driveability upgrade (Tires, Gears, Clutch Suspension Etc?)

Thanks guys!
 

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Hey guys,

I picked up my 2011 Mustang GT 5.0 at the end of last summer. I'm about to pull the trigger on:

1) Kooks Long tube headers with catted H Pipes.

(Question 1) -I've been reading that the X-Pipe gets better gains but it's negligible, and I want the deep muscle car sound rather than rasp. Do you guys agree?
(Question 1a) -Also what are the differences vs getting these option catted or not?

The stock exhaust has an H-pipe and it doesnt have a deep muscle car sound, so... X-pipe is better IMO. Catted keeps you legal

2) JTL CAI

(Question 2) -I was looking at other CAIs, and I asked the shop what they thought about the K&Ns ... he told me they were too small and I need a bigger one for the setup I want, and JTL is the way to go. Do you guys agree?

Dont waste your time unless you never plan on modding anything else on the engine

3) Borla S-Type axleback exaust

(Question 3) -I bought the car with flowmasters installed, but I want something with less drone and deeper. He said this was the way to go. I've heard some people have a similar setup to me, but they have the Borla Type S Catbacks instead of the axlebacks....what would the difference be if I changed this setup to that?

Listen to lots of sound clips on youtube, and not just of Borla. Borla will do one thing for sure, lighten up your wallet a lot more then any other exhaust.

4) Then obv getting it tuned. I'm going dyno tune it rather than an emailed canned tune.


..So aside from the questions I had above, a few more questions:

(Question 4) What kind of gains in HP and torque do you guys expect from the above set up?

Exhaust stuff will get you around 25-40 hp with tune. intake basically nothing, it's just the tunes making power

(Question 5) What would you next upgrade be after this? Which power upgrade (Manifold Intake? Cams?)? .. Which driveability upgrade (Tires, Gears, Clutch Suspension Etc?)

And this question is why you shouldnt get a CAI. You''re going to take that thing off and throw it in the trash if you cant re-sell it. Any NA power adders are going to take low end power and shift them above 5k rpm. You can get around 80 hp from a manifold and stage 3 cams (at the crank). Most people wouldnt recommend cams. A supercharger is the easiest way to make great power.

Rear suspension upgrades are a big deal on these cars, upper and lower control arms, adjustable panhard bar. Springs and shocks/struts are always something I would do. Wheels and tires are a must. At the minimum you need a 9.5" rear wheel with 275 summer tires just to take advantage of the stock power in my opinion. Adding power will just highlight the need for more grip.

Thanks guys!
See the bolded above
 

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Hey guys,

I picked up my 2011 Mustang GT 5.0 at the end of last summer. I'm about to pull the trigger on:

1) Kooks Long tube headers with catted H Pipes.

(Question 1) -I've been reading that the X-Pipe gets better gains but it's negligible, and I want the deep muscle car sound rather than rasp. Do you guys agree?
Aftermarket H-pipe will give you a more deep muscle sound but you won't get as much HP - again, negligible.

(Question 1a) -Also what are the differences vs getting these option catted or not?
Catted keeps you legal like fourdegrees11 indicates, but you'll get a bit more HP w/ then not catted. Not sure how much though; maybe 5-10HP?

2) JTL CAI

(Question 2) -I was looking at other CAIs, and I asked the shop what they thought about the K&Ns ... he told me they were too small and I need a bigger one for the setup I want, and JTL is the way to go. Do you guys agree?
Haven't heard this before. I'm indifferent on which is the best CAI; probably what just looks the best. I don't believe there's differences in HP between each one and their filters (differences would be negligible).

3) Borla S-Type axleback exaust

(Question 3) -I bought the car with flowmasters installed, but I want something with less drone and deeper. He said this was the way to go. I've heard some people have a similar setup to me, but they have the Borla Type S Catbacks instead of the axlebacks....what would the difference be if I changed this setup to that?
This I don't know - not sure what exhaust systems don't have drones.

4) Then obv getting it tuned. I'm going dyno tune it rather than an emailed canned tune.
IMO, I would get it dyno'd on a Dynojet with SAE measurements, vice STD, it's the strictest and will either be right on, or will show you a bit less than what you actually have. Always better to think you potentially have more HP, not less. :)

..So aside from the questions I had above, a few more questions:

(Question 4) What kind of gains in HP and torque do you guys expect from the above set up?
This question depends on many things, but if you're in relatively hot and humid weather, on a dynojet w/ SAE, I would guess somewhere between 30-35 RWHP gains.

(Question 5) What would you next upgrade be after this? Which power upgrade (Manifold Intake? Cams?)? .. Which driveability upgrade (Tires, Gears, Clutch Suspension Etc?)
If you do get a manifold, I would recommend the Cobra Jet Intake, but you'll spend about $2400 with all the things you would get w/ it (look at lethalperformance.com). You'll need the install kit, T/B, and CAI (and you're about to buy one.) If you buy one now, you would have to change this out for the one that is made for the CJ intake - consider that. If you look at my signature, I got all that done at once and I gained 62 RWHP & 10 RWTQ, in 90 degree weather, which I hear aren't bad numbers at all, despite the fact I thought I was going to get more like 75. Take a moment and read my post (http://www.allfordmustangs.com/foru...rd-performance-cobra-jet-intake-manifold.html) and this should give you a really good idea of what to expect with a Cobra Jet intake manifold.

Thanks guys!
Enjoy your car! I bet you're excited! How many miles do you have on her now?
 

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Hey fourdegrees11, the intake will provide you HP, it's proven on the dyno (about 30-45). There's no way I could have gotten that much HP with just an exhaust and tune. Look at my post and you'll see my numbers before and after. :):wink:
 

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See the bolded above
Thank you very much for the reply. I've been hearing that the rear suspension upgrades are very important. What do you figure I'd be looking at $ wise to do the upper and lower control arms (should they be fixed or adjustable?), adjustable panhard bar, Springs and shocks/struts?

Enjoy your car! I bet you're excited! How many miles do you have on her now?
Thanks, I'm super excited! :D I picked her up at the end of last summer and she has 85,000KM or about 53,000 Miles. I want to do a lot of performance mods first and then I'll be looking to do some aesthetics mods maybe next summer.

As I said, the previous owner installed an aftermarket axleback (flowmaster). The list of mods I'm looking to do in my OP, would you recommend going that route, or skip the Borla exhaust and have a manifold intake installed instead? I won't have enough to do both at the same time, so it's one or the other for now, and then I'll do the other thing probably next summer.
 

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Hey fourdegrees11, the intake will provide you HP, it's proven on the dyno (about 30-45). There's no way I could have gotten that much HP with just an exhaust and tune. Look at my post and you'll see my numbers before and after. :):wink:

Intake manifold yes, very good performance for the money. CAI, no.
 
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As I said, the previous owner installed an aftermarket axleback (flowmaster). The list of mods I'm looking to do in my OP, would you recommend going that route, or skip the Borla exhaust and have a manifold intake installed instead? I won't have enough to do both at the same time, so it's one or the other for now, and then I'll do the other thing probably next summer.
I don't think it'll make much difference because the entire exhaust, or the intake manifold with its required accessories will yield you approximately the same results, albeit the intake route is going to be more money. I would go do your exhaust first, and save the money until you're ready for the intake manifold route.
 

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Oh, you're talking about intake manifold, not CAI. :) Wholeheartedly agree that the CAI won't give you anything, unless you get a tune of course. Then the vast majority of the gains are a direct result of the tune. Probably very little, if any, are to the CAI.
 

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What about a 3.73 final drive?

Sent from my VS987 using Tapatalk
Yes, that's definitely the biggest bang for your buck; despite the fact it doesn't add TQ or HP; just gets you in the powerband faster!
 
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