358 WHP and 435 WTQ from my 2.7 engine & exhaust mods

bronco504a · Dec 6, 2025

I use my Bronco as a daily driver and my off-roading is mostly light dune bashing and camping in the mountains. I live in a country called Oman, and we have extremely hot weather here, so I designed my upgrade path around reliability, cooling, and consistent performance in high ambient temperatures.

So this is everything I have done to my car in regards to engine performance:”**

⸻

• Intake & Charge System
• Injen cold air intake
• Injen / aftermarket upgraded charge pipes
• Turbosmart diverter valve
• Ported throttle body (just installed)

• Intercooler / Cooling
• CVF upgraded intercooler
• Lower-temperature thermostat
• High-capacity engine coolant
• Additional auxiliary fans to improve airflow and reduce heat-soak

• Exhaust System
• CVF downpipe
• Full 3-inch Custom exhaust system
• Single outlet setup with a resonator + muffler

• Ignition & Boost Control
• Ford Performance spark plugs
• Tune from a tuner experienced with the 2.7 platform

⸻

Performance Results
• Current dyno numbers: 358 whp / 435 wtq (on our local 98 fuel)
• Spool remains fast, daily drivability is excellent
• Power delivery is very smooth and consistent even on long dune climbs

Ford Bronco 358 WHP and 435 WTQ from my 2.7 engine & exhaust mods IMG_3194

GA2Dr · Dec 6, 2025

Impressive! I've read elsewhere that the 2.7 Bronco has about 14% drivetrain loss for HP and 8% for torque. So you're at roughly 405hp and 470 ft.lbs. at the engine.

What was the ambient air temp when this dyno run was done? Also what kind of boost (psi) are you running on your custom tune?

23OBX2.7 · Dec 6, 2025

How much did that all cost in Oman? Is it meeting your expectations? I should get 430 tq with just a Ford Performance Tune....

Ducati1098 · Dec 6, 2025

23OBX2.7 said:
I should get 430 tq with just a Ford Performance Tune....

At the engine, but not RWTQ. That’s probably closer to 380-390

23OBX2.7 · Dec 6, 2025

Good point....50 ft lb is significant...

userdude · Dec 6, 2025

Yes, but how big are the wheels??? lol I have the 2.3L, which they've just cracked (I think?), so hopefully we'll have something a little less modest than the FP tune.

Ducati1098 · Dec 6, 2025

userdude said:
Yes, but how big are the wheels??? lol I have the 2.3L, which they've just cracked (I think?), so hopefully we'll have something a little less modest than the FP tune.

Judging by the numbers, I’m gonna guess it’s on the factory Sasquatch tires. It’s pretty close to what mine made with bolt ons and 93. The torque is just more conservative

userdude · Dec 6, 2025

Ducati1098 said:
Judging by the numbers, I’m gonna guess it’s on the factory Sasquatch tires. It’s pretty close to what mine made with bolt ons and 93. The torque is just more conservative

Oh. Oh, yeah. The real horse whispering...

(Of course I was kidding.)

Ducati1098 · Dec 6, 2025

userdude said:
Oh. Oh, yeah. The real horse whispering... (Of course I was kidding.)

lol I know, but it’s actually a good legitimate question

wheels/tires do make a big difference to numbers

userdude · Dec 6, 2025

Ducati1098 said:
lol I know, but it’s actually a good legitimate question wheels/tires do make a big difference to numbers

Yeah, that's what I thought was funny. Oops...

Ninjak · Dec 6, 2025

Great numbers. I need to get my RIG to a dyno. Its great that these vehicles take well to mods and tunes.

Fast Eddie · Dec 6, 2025

Do you have any before dyno numbers?

GA2Dr said:
Impressive! I've read elsewhere that the 2.7 Bronco has about 14% drivetrain loss for HP and 8% for torque. So you're at roughly 405hp and 470 ft.lbs. at the engine.

What was the ambient air temp when this dyno run was done? Also what kind of boost (psi) are you running on your custom tune?

14% would be on the low side for most SUV's, 8% would be the lowest I have ever heard for a vehicle.

GA2Dr · Dec 6, 2025

Fast Eddie said:
Do you have any before dyno numbers?

14% would be on the low side for most SUV's, 8% would be the lowest I have ever heard for a vehicle.

I agree and I'm not saying it's accurate but it has been stated before with dyno results:

https://www.bronco6g.com/forum/thre...shows-impressive-numbers-at-the-wheels.22593/

MWILD · Dec 6, 2025

Solid numbers. Who tuned it?

Ducati1098 · Dec 6, 2025

GA2Dr said:
I agree and I'm not saying it's accurate but it has been stated before with dyno results:

https://www.bronco6g.com/forum/thre...shows-impressive-numbers-at-the-wheels.22593/

Yeah there’s really far too many variables to put an accurate number on it. I’ve seen plenty of stock dyno graphs/videos that are far different from those numbers, and some that are close to those.

358 WHP and 435 WTQ from my 2.7 engine & exhaust mods

bronco504a

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