OVTune 3.5L Tacoma Supercharger and Twin Turbo Systems

Thanks

 

The main differences between the base turbos and powermax
1. Less power at the same psi
2. Higher boost on base kits = more heat
3. Base kit turbos spool faster, but die off in the higher RPM

 

Compressor side of the base kit turbos is smaller so they don't do as good of a job keeping up with air consumed by the engine at high rpms. Whereas bigger compressor of the powermax can move more air and keep up with engine demand more efficiently. That's why with the powermax kit he can sustain the constant 9.5 psi whereas the base kit is 6.5 psi and at higher rpms will taper to 5 psi. Also more heat equals less dense air. Less dense air isn't going to compress as efficiently as cool air.

 

would it make sense to get the powermax kit w DI upgrade and add a boost controller to stay at ~8psi throughout the powerband? not looking for enormous power, but having power without it tapering off would be nice

 

The powermax kit comes standard @ 9.5 psi from 2000 rpm to 6000 rpm.

 

Yah, it’s looking like I’m going low boost powermax. Thanks for the info.

I hate to bring it up again, but need to ask. Any thoughts on a higher intercooler? I’m going to try to attach a pic, your truck should be the same I would think.

I’d like to get something that sat on that black plastic shelf where my pen is. I know it’s tight, but if you could give it a think or two in the upcoming weeks that’d be great for a bunch of us.

 

In order to fit an intercooler there it's got to be pretty small. There is less room there than it looks when looking down in there.



there is a post somewhere in this thread, but regarding base turbos vs powermax (from my testing)
PowerMax :
Peak boost (full boost @ 9.5) by 2000 RPM - holding without taper to 6000 rpm


Base Turbos:
Peak Boost (Full boost @ 6~7psi) by 1300 RPM - tapering down to about 4-5psi by 5000 rpm, 3-4psi by 6000 rpm.

Light blue line = Base Kit PSI expected by RPM
Orange Line = PowerMax kit PSI Expected by RPM
Red Line = PowerMax High Boost PSI (ethanol/methanol required)

 

Out of curiosity the base turbos are oem replacements for the f-150 right? I haven't been able to find anything on boost pressure on a stock f-150. What do these turbos do in the f-150 as far as boost pressure?

 

Garretts OE versions. They are quite a bit nicer than the stock ford units, and use a much better compressor.

Boost on the F150 is variable, demand by torque request. Ranging from 7 to 15psi.

 

(check BASE Turbo kit on the right of first image. You can see it is "bov-less." This is how all kits will be coming, powermax and base)



Base kit Turbo vs PowerMax



PowerMax vs Ford OEM

 

Does anybody have an idea of how durable the base turbos will be for a daily driver? Will you get 100k out of them, or are they a 25-50k rebuild cycle?

 

Information like this graph is great, thanks!
Will be interesting to see how this translates into torque curves, and a purchaser can make decisions on how they drive/spend most of their time in a particular RPM range (usable power, not max power). I know myself, I wouldnt be winding this out to 7k rpm! Heck, I'm rarely above 3k rpm (not race-truck)

 

don't overboost them and don't oil starve them and they should last a very very long time.
That was one of Garretts main features about these turbos. They are designed to survive a very long time under constant load and pressure. Unlike the OEM Borgs that crap out often.

edit, this is powermax info..but there are the OEs on garrett site as well
https://www.garrettmotion.com/racin...catalog/vehicle-specific/3-5l-ecoboost-f-150/

 

Have you logged any engine oil temperatures yet?

 

So you would say 9.5psi is the ideal low range for the pm kit?

 

The lower level powermax kit is sounding realllll good.

 

What does the "calibration required" option mean? Is that regrading the tune?

 

In case anybody is interested for reference here are some dyno numbers (wheel not crank) of Ford 150's engines according to American Truck Youtube video. Looks like the OVT Powermax low boost option will put out very similar numbers as a tuned eco boost. These kits are really going to transform this truck. Can't wait.

FORD eco boost 3.5L
stock: 321 HP, 370 Ft/lbs
Tuned: 373 HP, 403 Ft/lbs

Coyote 5.0
stock: 353 HP, 341 ftlbs
tuned: 366 HP, 355 ftlbs

 

And we are much, much lighter.

 

Are those numbers with the Garrett powermax turbos?