Advertisement

Money2536's Intake, Long-Tube Headers, Exhaust, & Tune Case Study

Discussion in '5.2L V8 Voodoo Engine Mods & Bolt-Ons' started by Money2536, Apr 16, 2017.

  1. Money2536

    Money2536 Well-Known Member

    Vehicle(s):
    2017 Magnetic Metallic GT350
    Joined:
    Oct 13, 2016
    Location:
    The Villages
    Posts:
    106
    Likes Received:
    125
    0   0   0
    I've done a bunch of these types write ups on my previous cars, so I figured why would it be any different for this one. In the past, I'd done mostly photo journals, but this one has been all video. I started journaling/documenting the process of modifying/playing with my cars as a form of therapy. Putting this stuff down in the way I would want to see it has connected me with so many people and brought me so many places that it's hard to explain. It's changed my life.

    33173008175_cf173196ab_b.jpg

    I've never been one to care much about dyno results, but it always make for more interesting modifying. If you haven't done the dyno thing, keep in mind that they tend to break often, provide sketchy results, and certainly aren't useful unless you stick with the same one. The positive (when the dyno works properly) is the ability to validate or invalidate the inevitable placebo effect you get in the seat of your pants when doing something that changes the car. For instance, on my AP1 S2000 I put on a fancy Spoon Header/Exhaust with a VTEC controller and lost 10 horsepower. Step one of any comparison write-up would be to get a baseline. This is a DynoJet with the car driving the rear wheels only at Titan Motorsports in Orlando.

    [ame]

    Results seem pretty typical for a stock GT350.

    STD
    33223152913_1d201f0b62_o.jpg

    SAE
    33192497604_976385b9cb_o.jpg


    Specifics:
    To be honest, I tried contacting some of these manufacturers to see if they wanted me to do something like this for them. You know the, wink...wink... I'll test and actually take a decent photo/video for you. Just send me the stuff, and I'll show people how it works. I know they get hit up all the time for free stuff, but I like to think I'm a bit different. I know for a fact there is value in a 3rd party providing data like this. It drives me crazy that company after company make these great products and provide virtually no information about them. Just take some decent photos and maybe make a few videos. Is that too much to ask? Well...ARH thought I was nuts and Lund doesn't answer emails or phone calls, so I was on my own. I never actually ask for product, I just explain what I'm planning to do in the form of video, audio, and write-up format. I'm not holding my breath for a check back after they sell bunch of this stuff. I was going to buy it anyway, so maybe they are smart to just let me do this. At least, JLT saved me a few bucks offering dealer pricing. Anyway here are the products in question.

    American Racing Headers Full Exhaust
    http://www.lethalperformance.com/am...m-with-pure-thunder-mufflers-full-system.html

    I chose this for a few reasons. I want the rasp and cracking gone. I know the argument about retaining the "unique" sound of the flat plane Voodoo 5.2L, but I just can't handle the rasp, especially after deleting the resonators on the stock exhaust. I hated the sound that made. This system has long-tube headers that I had no idea how much of a pain the install would be. It also has cats that I decided to retain to help with the rasp and just make my life less smelly and easier. Resonators were important to me too. The Kooks full system will be much louder due to lack of resonators. This was the deciding factor. Also no valves on the mufflers. I don't like valves. Having to open them every time I get in the car annoys me. I never end up using them. This comes with a plug and play resistor to make sure we don't have any error codes. You just lose valve operation. You could choose 2" primaries, but I think that's for forced induction or bigger cams which I won't be doing.

    JLT Intake
    https://www.jlttruecoldair.com/ZenC...ducts_id=863&zenid=9htgns5i3dpir7cetgg4v0p315

    I took a risk here in choosing hydrocarbon rather than black plastic. I've never been a fan of painted stuff under the hood and certainly not in the interior, so that wasn't an option. I'll tell you, the "fake" carbon fiber from JLT looks really, really good. Call it what you want, but it looks great and is super high quality. I chose the blue oiled filter option. The fit is good, but the my filter is hitting the hood. I can't get it to sit lower, but it hasn't caused any issues other than putting a line in the filter. The throttle body opening up is much more audible, but the induction sound hasn't changed.

    33070863251_be37d23fcd_b.jpg

    33041983022_ab7e102237_b.jpg


    Lund Racing Tune
    http://www.lundracing.com/lund-racing-ngauge-with-2016-17-shelby-gt350-custom-tuning/

    I chose to pay the extra $150 for the FlexFuel option just in case I wanted to run E85. I chose this flash tune rather than a custom just, for simplicity and convenience. I've already voice the issues dynos tend to have, but the main reason I don't like them is having my car do 150mph standing still. It scares the crap out of me and really isn't good for the car. Having it tuned on a dyno takes dozens of runs. Lund seems like the Dinan of American Cars, so I gave it a whirl. Hasn't let me down yet.

    Install:
    Intake and Tune were a breeze to install. The headers were a different story. Titan and I decided it would be cool to do it live at their open house, but that didn't work out so well. The plan was to to do the install life, then throw it on the dyno live at the open house with 5,000 people there. It took about 9 hours to install the exhaust and headers, so that didn't happen. It's a brutal process that I would pay someone to do next time.

    [ame]

    [ame]

    Sound:
    Let's be honest, horsepower increases are always secondary to sound improvement from an exhaust. At least they are for me. Lord knows I'm obsessed with the note a car makes. I always have a vision for what I think the car should sound like. Unlike my GT3 where I had 13 different exhaust variants to get it right, I'm pretty sure I got this one nailed on the first try. I guess you can be the judge from the videos below. I'm using a Rode Stereo VideoMic X, so the sound is pretty accurate if you play with decent speakers. Some complain about it sounding like a cross plane 5.0, but I think it still retains all of the flutter from the flat plane but without the rasp. So mission accomplished.

    [ame]

    [ame]

    [ame]

    Power:
    The car felt like it was making more power. Throttle response is a bit better, and I thought the rear end was breaking loose more easily in 2nd and 3rd gear. It took me about a month to get back down to Titan and get it done. They are about an hour and twenty minutes from me. But...I finally got comparison dyno done. The results were as expected.

    32790637840_d3bf3ba8f9_b.jpg

    STD
    33192497944_76b42ef0aa_o.jpg

    SAE
    33994628816_f596ae1c34_o.jpg

    STD Stock vs. Modified
    33223151723_5dd5e384c3_o.jpg

    SAE Stock vs. Modified
    33192494414_66e5cbfd2a_o.jpg

    Conditions
    33192499854_9852d27f9f_o.jpg

    2 Baseline Runs vs. 2 Modified Runs STD
    33994628566_68a1082efb_o.jpg

    Conclusion:
    So the conclusion is pretty simple. Everyone works and sounds like I'd hope. No more rasp, still tons of nasty, but exhaust note is much more organized. The intake is a non-event other than a slightly more audible throttle body. Tune seems to be doing it's job, no CEL or errors. The only issue seems to be the studder/stumble I get for about 2 minutes as the car warms up.

    So I'd call it a success, more horsepower, better sound. It checks the boxes.

    [ame]
     
  2. SoCalTim

    SoCalTim Member

    First Name:
    Tim
    Vehicle(s):
    Sold : 15 GT
    Joined:
    Sep 14, 2015
    Location:
    CA
    Posts:
    3,129
    Likes Received:
    1,600
    Rating:
    100%
    6   0   0
    Nice write up Matt. Love the exhaust note with the full ARH system.

    Photo quality is mind-blowingly crystal clear. What camera set up was used for the above photos?
     
  3. OP
    OP
    Money2536

    Money2536 Well-Known Member

    Vehicle(s):
    2017 Magnetic Metallic GT350
    Joined:
    Oct 13, 2016
    Location:
    The Villages
    Posts:
    106
    Likes Received:
    125
    0   0   0
    I think I shot these with my 80D and 17-55mm f2.8 EFS lens. I normally use 5DMKIII and 24-70 f2.8L II.
     
    SoCalTim likes this.
  4. NotBlake

    NotBlake Well-Known Member

    Vehicle(s):
    2015 Mustang GT (Base)
    Joined:
    Jun 12, 2015
    Location:
    ATL
    Posts:
    151
    Likes Received:
    117
    0   0   0
    Sounds great matt. Surprised by the gain as I'd figure Ford had these pretty dialed in with all their development on the Voodoo
     
  5. JN66

    JN66 Well-Known Member

    Vehicle(s):
    2017 GT350R, 1966 Couple (347 Stroker)
    Joined:
    Feb 28, 2016
    Location:
    British Columbia
    Posts:
    1,095
    Likes Received:
    413
    0   0   0
    Much appreciated Sir
     
  6. spiller

    spiller Well-Known Member

    Vehicle(s):
    Porsche GT3
    Joined:
    Mar 23, 2017
    Location:
    Adelaide, Australia
    Posts:
    513
    Likes Received:
    123
    0   0   0
    Enjoyed this little series on the GT350. Keep it up, I hope that's not the end of videos on this car given that it's now basically "done", right?
     
  7. dron_jones

    dron_jones Well-Known Member

    Vehicle(s):
    Me crazy, and I can't help myself
    Joined:
    Mar 31, 2016
    Location:
    Fell into a pot hole in Michigan and can't get bac
    Posts:
    1,182
    Likes Received:
    906
    0   0   0
    "MHT" shifter still to come!

    My fear is that the GT350 will start taking a back seat now that the S2000 is on the way.... once the 991.2 GT3 comes we will probably never hear the FPC again!
     
  8. jvandy50

    jvandy50 H3249

    First Name:
    jason
    Vehicle(s):
    10 JKU, 18 ZL1-1LE
    Joined:
    Jul 8, 2015
    Location:
    AR
    Posts:
    2,095
    Likes Received:
    935
    Rating:
    100%
    1   0   0
    Sounds great! Headers really clean up the sound, but the install requires new, unheard of curse words lol.

    Have you used e85 yet? I may have missed what fuel the runs were made on. I loved the lund FF tune on my GT, and am thinking about it with the 350 now...just not a bunch of info out there
     
  9. Voodooo

    Voodooo Banned

    First Name:
    Scott
    Vehicle(s):
    Carroll Shelbys Soul Lives Under My GT350 Hood
    Joined:
    Nov 2, 2015
    Location:
    SE Michigan
    Posts:
    5,822
    Likes Received:
    2,385
    0   0   0
    When I dynoed the ARH's with only headers and catless x pipe, I also dynoed before and after JLT. The JLT gained me 1rwhp. That was most likely a fluke or the 10 minutes of cool down between swaps. I put the stock one back on because I prefer the oem fit and look better.
     
  10. Sammy

    Sammy Well-Known Member

    Vehicle(s):
    2017 GT350
    Joined:
    Jul 4, 2016
    Location:
    Walnut Creek, CA
    Posts:
    181
    Likes Received:
    88
    Rating:
    100%
    1   0   0
    Thanks for taking the time to document this.

    Many of us here would like to have the exhaust valves stay open. Your system came with plug and play resistors to fool the computer into not throwing a warning light. Can you give us a lead on who makes them and where we might be able to buy them?


    Sammy
     
  11. Voodooo

    Voodooo Banned

    First Name:
    Scott
    Vehicle(s):
    Carroll Shelbys Soul Lives Under My GT350 Hood
    Joined:
    Nov 2, 2015
    Location:
    SE Michigan
    Posts:
    5,822
    Likes Received:
    2,385
    0   0   0
    They are only available with the ARH system and not available separately.
     
  12. Bull Run

    Bull Run Well-Known Member

    Vehicle(s):
    2015 Mustang EB Prem PP
    Joined:
    Feb 24, 2017
    Location:
    AZ
    Posts:
    861
    Likes Received:
    565
    Rating:
    100%
    3   0   0
    Awesome writeup for an awesome car! One of the best exhaust I heard so far.
     
  13. Cfirekirch

    Cfirekirch Well-Known Member

    Vehicle(s):
    2017 GT350
    Joined:
    Feb 19, 2017
    Location:
    Columbus, OH
    Posts:
    114
    Likes Received:
    50
    0   0   0
    Looking fwd to your MGW shifter install
     
  14. sublime1996525

    sublime1996525 Well-Known Member

    Vehicle(s):
    2017 Race Red GT350
    Joined:
    Sep 17, 2016
    Location:
    Ricers make baby Jesus cry, Utah
    Posts:
    879
    Likes Received:
    415
    0   0   0
    Great write-up. Can't wait to see what happens on the e85 tune.
     
  15. PencilGeek

    PencilGeek Well-Known Member

    First Name:
    Robert
    Vehicle(s):
    2017 GT350R HR278, 2008 BMW M3
    Joined:
    Feb 17, 2017
    Location:
    Northern California
    Posts:
    225
    Likes Received:
    192
    Rating:
    100%
    1   0   0
    Great write up. I just ran your weather conditions through a dyno correction calculator and came up with the following density altitude numbers.

    Runfile_008: 80.94 deg-F, 30.04 in-Hg, 44% humidity, 96 ft altitude (Titan Motorsports):
    DA: 1593

    Runfile_001: 82.40 deg-F, 30.16 in-Hg, 63% humidity, 96 ft altitude (Titan Motorsports):
    DA: 1649

    http://www.bigdynodatabase.com/DynoCF.php
     
Loading...

Share This Page