F-150 Manifold Testing/Journey

As I said somewhere here, the F150 mani is probably a nudge ahead of the tune I have for best mod. Throw in the $ value into the equation it's more than a nudge ahead.

 

Btw, for those looking for these mani's, head over to www.car-part.com/ … dicker for a lower price than asking, never know may land one.

 

i regret selling mine. now on the hunt to find a another one. Prices are definitely not the same brand new as they were earlier this year

 

Does anybody have before/after 1/4 mile data? Thx

 

Good question. It'd be interesting to see the difference between stock IM and F-150 IM.

Afterall, torque is the most important factor for rapid acceleration. Max RPM might be the limiting factor if forced to shift at ~6.5K RPM, as opposed to ~8K shifts with the 2018/CJ IM's where they shine the most.

 

Yep, they're getting more scarce on eBay. My tuner said he'd supply & fit one for $165 (maybe a little more to adjust my tune), so I'm all locked in for early-mid Oct

 

Lucky you. That’s not bad at all

 

Did anybody ever figure out the deal with how the 2018 manifold will fit? Supposedly there is better performance over the 15-17s.

 

If you're talking GT mani's only, it appears so. I haven't heard or read anything about an '18 F150 mani having better performance than the '15-'17's.

I'm really not sure what's changed on the '18 F150 manifolds ... did they go port/direct injection like the Mustang GT?

 

Yea, I was referring to the 18 F150 mani. If anybody knew the difference between that and the previous years. Tried finding some info in the f150 forums but didn't find much

 

Installed it last night, pretty simple. It took about an hour. First impressions are definitely worth the 60 bucks I paid for it. Best way to describe the daily driving aspect of it is when I shift it feels like there's no power drop off. I shift around 3-4k in town. It feels like I'm just cruising forward without argument from the engine. A/C on is also not as noticeable as it was before. I need new rears, they were already losing traction easily so it's hard to say if the butt dyno feels the added TQ because I break loose flooring it in 1st, flooring it in 2nd and shifting to 3rd easily.

 

You'll find too that the engine just seems more relaxed, even at the same revs as before. With the GT mani it seems like it's screaming more so than with the F150. The F150 mani just takes it all in stride if you know what I mean, while the GT mani makes it seem like the car is working harder.

 

have you had it dyno'd or tuned?

 

Dyno'd no. The tune is the same tune I had with the GT mani. No changes req'd per 2 tuners known on this forum going to F150 mani.

 

Im just using the can'd 91 tune on my bdx. But it makes sense a dyno tune with this manifold would help it reach its peak power. just curious what that peak is since just the swap alone yield 20-40 ft/lbs under the curve.

 

Sounds great! Curious, does it pull to the same top end as the OEM GT manifold, or does it fall off a little earlier?

 

By the dynos i've looked at it does drop off around the same as a stock 12-17 mani.

 

To be honest I rarely need to or go past 6500 rpm so I can't say for sure … the graphs posted earlier show it drops around then so I'll assume it does but the benefits of where I drive 99.9% of the time far outweigh the loss I'm experiencing on the 0.1%.

If your % split is skewed differently then you'll have to decide for yourself if it's worth the effort.