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The stock turbos max out at 43-44 lb/min with a tune, so the stock cats/piping aren't a restriction. I wouldn't use the paddles to up-shift because it is a lot slower than letting the ECU do its thing. This isn't a twin-clutch automated manual tuned by Michael Schumacher. It's a transmission designed for soccer mom Traverses and Explorers also doing double duty on some performance models.


The aftermarket FMIC is about the only mod I'd recommend, as the stock FMIC has a temp rise of about 100F over ambient at full boost. Any reduction would help as cooler air is more dense. It's not just about the timing, as I can still run about 17* advance at WOT with a lot of boost using the right fuel.



To me, the aftermarket exhaust systems for GTDI/Ecoboost sound like a ricer fart can mod with a diesel pickup truck turbo wind-down, something a high schooler would be interested in. The stock exhaust system is just quiet from the outside. The fake engine noise isn't my favorite but there's no drone and it is quiet. I've messed with catbacks and downpipes for over 20 years and the lesson I learned is to just stick with stock, especially as I got older.
Straight line auto is better. On the track or spirited street driving the paddles are a HUGE gain. It's not even close. It did take me a little while to learn it as it's different then a real manual.
With your silent motor and lack of practice it would be pointless.

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Don't get me wrong im sure there are still some gains to be had installing the aftermarket Downpipes on our stock turbos after tune and FMIC - while the peak to peak gains will be small, im sure the "area under the curve" gains are more substantial. In some situations it will also help your turbos spool to build boost quicker. The only question is it worth the cost to you??

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The down pipes and turbos aren't worth it to me, but I've done just about everything else. I'm not looking to beat everyone at the drag strip just have a fun &fast car.

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If you look at twinforce_fusion's videos, the boost/hp came in 5-700 rpm sooner. I think he was at full boost by 2k rpms. That quicker reaction is awesome and great for autocross.

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If you look at twinforce_fusion's videos, the boost/hp came in 5-700 rpm sooner. I think he was at full boost by 2k rpms. That quicker reaction is awesome and great for autocross.

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Not to mention better launches for drag strip

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As far as taking orders Im ready but I will not be able to get these built and shipped out before probably mid January as I still need to build a fixture to copy the downpipes.


BTW removing the stock downpipes is a HUGE PITA!!!!! I would not even attempt to do these without a lift and lots of special mechanics tools. I would highly recommend having a shop do the install.
Are these still up for grabs?
 

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Bump for one of the the most quality pieces of hardware I've ordered, for cars or otherwise. They arrived well before the time estimated, fit LIKE A GLOVE, and performed exactly as they should. @darkstar You're the man
 

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@metroplex, @DAS, and @EddieEcoBoost, thanks for the advice. I think what I’m getting out of your posts is:

1. Tune
2. FMIC
3. Bigger turbos
4. Then maybe it’s worth 3” DPs

Close?

Thanks again.
IMO:
1. FMIC
2. Tune

or

1. FMIC + tune


Power output even stock, I could only describe as UNPREDICTABLE. Car would pull hard, next time had zero nuts. The tune is designed to pull A LOT of timing for high IAT2, and extremely neutered performance for "very high" IAT2s, or heatsoak. The FMIC made the car CONSISTENT, and it's amazing how much more at ease you feel knowing the temps are under control. Just my opinion.
 
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