Performance Upgrades

[patrickhunter614]

Thanks for the info!

Is anyone near Livernois and willing to provide their 3.7 to them?

 

[fritzjodygigi]

Has anyone done any performance upgrades on their vehicles? I have a 2014 PI Utility with the 3.7L, looking to do some new exhaust (no one seems to make aftermarket bolt on), and any another upgrades that will make better power out of that motor, thinking of adding a turbo, not sure on the cost though.

Thanks!

patric i have a 2017 ford explorer xlt witch is supose to tow 5000 pounds . i bought a 3,200 lb camper and it struggles big time .how can ford get away with that ****. gona buy a deasel

 

[peterk9]

patric i have a 2017 ford explorer xlt witch is supose to tow 5000 pounds . i bought a 3,200 lb camper and it struggles big time .how can ford get away with that ****. gona buy a deasel

Welcome to the Forum.
I'm guessing that you have the factory-installed tow package and the XLT has the 3.5L V6. If so, I believe you are the first to report having issues towing 3,200 lb. Did you use a weight-distributing hitch?

Peter

 

[PinkWilson]

Just gonna toss this out there. I drive an Infiniti Q50. I had a Fox 5.0. We just got our kid a 2014 Interceptor. As far as tuning, Q50 can see 100+HP on a tune. Fox 5.0s will make 100+ on analog add-ons like heads, manifolds, exhaust, and especially cams. My guess would be to have a Cam ground to specs

 

[AnSketch]

Yea, that had kind of been the concensus that I am seeing so far. Looking back I wish I would have known more about the 3.5 engine before I made the purchase, oh well, too late now. It also would probably be more cost efficient to sell the current vehicle and then purchase one with the 3.5 rather than go through a motor swap, does that sound about right?

Thanks for all the input guys. If I stick with the same vehicle I would like to get some new exhaust, just for better sound, but still have no luck finding anything that will fit, has anyone actually done new exhaust on their 3.7?

I have only with the valvetronic mufflers but really not that noticeable of a loud difference next is taking off the long resonator but I don’t want to lose my quiet cabin but definitely deciding to put 4 resonators or 2 medium ones

 

[AnSketch]

Since I went through this before, I'll remind the class.


A bolt-on for the 3.7 PIU doesnt exist, kinda. Livernois has a cat-back for the Sport that will work, since the "downpipes" are essentially the same, and the PIU is a real dual exhaust, not like the 3.5 which goes 2-1-2. Otherwise most of the other exhausts will require cutting the post-cat flex pipes and possibly having exhaust leaks. Without more air and fuel coming in, bigger pipes out will do almost nothing except make the truck louder, which you can do with your own choice of muffler and be done with it. There's a decently large resonator in the PIU exhaust up front, but even then it will still drone, and drone bad depending what mufflers you use.

Livernois told me they'd do a 3.7 tune, if someone actually came by and let them have the truck. They must be still waiting.....

I would if I was closer might need to do a road trip that might be after I do exhaust and a CAI

 

[LuckyRabbit]

Has anyone done any performance upgrades on their vehicles? I have a 2014 PI Utility with the 3.7L, looking to do some new exhaust (no one seems to make aftermarket bolt on), and any another upgrades that will make better power out of that motor, thinking of adding a turbo, not sure on the cost though.

Thanks!

Don’t think the exhaust will do much but increase the noise

Look into better tires and make sure it’s following its factory maintenance schedule

 

[AZONTHEDL]

The FPIU is a true dual exhaust. The reason it can Drone is that the factory resonator is actually.2.resonators in one outer skin. The 2 exhaust pulses would muddle the flow as they are slightly different (Bank 1, Bank 2) that's because the VVT adjusts the cams on each Bank according to different monitors and even 1 degree difference changes exhaust pulse. It's the best setup available. Iridium plugs, +15% coils and a CAI to start. Peddle commander, throttle body spacer helps as well. I'm looking currently at Duryea Technologies
DURYEA 12 Volt Electric Supercharger a dual pair based on the AM500 supercharger which will provide 2 bar, to fit means removing airbox and battery tray and moving battery to wheelwell along with 2 additional batteries, or lastly you could add a nitrous throttleplate adaptor...

 

[Steve8316]

...the factory resonator is actually.2.resonators in one outer skin.

How did you learn that? Did you test it? Or cut one open? Got pics?

...even 1 degree difference changes exhaust pulse.

Not enough to matter. The speed & thus timing of the pulses changes 100x more than that just due to normal changes in ambient temperature, baro pressure, RPM, load, throttle position... NASA couldn't measure a statistically-significant change due solely to VVT action over the normal operating range.