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Clarity on common mods - Seeking advice

Similar demographics... 93 or E85?


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WG2

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Hello all, new member here but a long time follower of Mustang forums.

Just a little background on myself in hopes that it will help you all understand my situation to best advice me as to what mods to do vs. hold off on. In 2014, I purchased my first Mustang... a 2014 Ruby Red GT Premium with Track Pack 6M. I've recently traded in after that being my daily for the last 5 years into a new 2019 Shadow Black GT Premium PP2 6M as my daily. My daily round trips usually consist of approximately 20 miles, which is usually city speed limits but when opportunities permit, I do enjoy spirited driving on the highways and county roads. I do rely on my car for my sole means of transportation, so keeping it healthy is my top priority but come on... I do want to do some tasteful modding to enhance the overall driving experience.

As of now, I have only done one mod which was a res delete to straight pipe... admittedly, I jumped the gun because I will be going with an x pipe. Aside from that, despite having leached the forums for the past several weeks, I am still on the fence about a couple of issues. As of now, I have no plans of FI in the immediate future... I would like to keep the car NA. So with that said, in essentially looking at doing the main bolt on mods.

So here we go...
1.) I've read speculation, if you will, that the factory exhaust headers are as free flowing as aftermarket headers... is there any truth to this? Would I be better suited running high flow cats or a cat delete, or is there any comparison out there of catted OEM headers vs catted aftermarket headers for the 2019s?

2.) The trivial one here... OEM intake with drop in filter vs aftermarket intake. Rumor has it that the OEM cylinder tube is as large as any aftermarket intake, but is there value to gain in the cone vs. panel? Do note that any intake I do, it will have to be a closed box due to heat soak in the Texas heat. Also, is the stock throttle body inlet diameter a choke point for these Gen 3s at all?

3.) Lastly, the tune. I will likely go with Lund but my indecisiveness comes down to the type of tune I would prefer, given the pros and cons of each... each being, 93 vs. E85. I should also note that I do not track the car in any fashion, simply because I rely on this car for means of transportation. So I am aware of some of the benefits and downfalls of each tune and fuel type, but do need a little clarity as I am more so leaning towards E85. Given the overall situation, regarding driving habits and the dependency of maintaining my daily, would going the E85 route be a wise decision? For reference, ~20 mile round trips in Texas heat and high humidity, city driving, E85 at stations near me, etc.

Thanks for the advice!
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Schwerin

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1) Cats and mid-pipes are the main restriction headers help but not as much as they used to on older engines. If I remember there was a VMP dyno vid where they moved from hi-flow cars to hi-flow cats and headers and it was about 15whp difference. not a lot for how much headers+ install are.

2) Intakes are not worth any real power, at least not while mostly stock. They can have some gain's but nothing crazy, fro reference HotRod got about 13 HP from a JLT intake on an engine dyno, thats maybe 8HP at the wheels.

3) Type of tune wont matter at all. It should be about the quality of the tuner, and your local to them. Do you want a tuner you can drive to and deal with in person, or are you comfortable having to possible do a few back and forth emails wit logging sessions to potentially get dialed in fully? Any good tuner will be able to give you a 93, e85 or flex tune. You'll have to look around online for if there is much e85 around your area. I cant speak to MPG as with no e85 near me I've never run it. That said I'd still run a Flextune so I could run it if I found it.

That said intake + headers with hi-flow cats + a tune in combination will give more gains than any individual part or the two without a tune.
 

Zelek

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For a 2018+, a cat delete, tune, and a drop in filter with a flex or E85 tune is pretty solid bang for the buck performance. Headers if you want to squeeze out a few more ponies but that comes with a lot of noise too.

93 octane tunes don't do much either in the performance area.
 
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WG2

WG2

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Appreciate the useful information guys!
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