t76mach

how much boost do you guys run and whose doing the tuning? Dyno numbers?


Here is mine on 91 octane and me doing the tuning, aka smptuning.

jsdecorte

stock '16 ive measured 20psi under heavy load. thats reading off a ford IDS computer datalogger live feed. stock no tune

t76mach

ive had up to 10k lbs on this truck untuned and never seen 20psi. up a 6% grade to. i see about 16

the picture is with no load at 2500 rpm.
stock tune same street i see about 14lbs
93 sct can tune i see 16lbs

towing the trailer and the race truck and a bunch of gear and 3 people (stock tune and never came close to 20lbs)

https://www.facebook.com/photo.php?f...type=3&theater

Mark Miller

I'm not sure what my stock 2.7L makes for boost,but i know it runs **** good!!!!Off topic does your t76mach have the 4V 4.6 in it?

<-KJP->

Your image shows negative boost as captured. Stock boost on these trucks(2.7L) is 18.5-18.9....I have seen mine spike up to 21.xx on my 5* tune.

I believe most tuners are struggling to get extra boost on the 2015+ trucks

jsdecorte

anyone know if the 16's just have more boost? or just a newer calibration in the PCM?
KJP what exhaust are you running? i have mine straight piped, could be higher exhaust restriction on '15

tsigwing

remember reading a thread on another forum about boost vs HP and the consensus is that you won't necessarily make the most amount of HP at the largest boost numbers.

engineermike

Apparently, any modern ECM controls the engine based on "torque demand". If, for any given set of conditions, it can meet the demanded torque at 15 psi, it will do that. It also may take more or less to get the demanded torque.

Indy2015

Air temperature and density also has a large effect on turbos. The torque output may be the same for a guy living in Seattle as a guy living in Denver, but because of the differing air density of the two places, boost psi and rpm will be different to reach the same torque numbers.

AAG

What size turbos does the 2.7 have?