Compression Ignition Addict
Join Date: Jul 2009
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Big Turbo Question
So here is a brief discription on my problem and hopefully you guys can help.
Airdog II, ITP Reg Return, hypermax 225s, 72mm Charger.
When i run my tow/street tune (Innovative Diesel) the turbo is slow to light down low (understandable) and runs decent up top, so im ok with this tune.
My xtreme race tune Problem
Lights better down low, up-top power especially in 5th is slow
I am use to manuals and know nothing about autos. I am thinking Exhaust Back Pressure Sensor. When you roll on it-into full throttle down low 1-3 it pulls hard as hell but up top (going floored), if it downshifts, you see boost spike to 35-40ish the truck acts likes its going to go but accelerates slowly (probably slower than the tow/street tune) and rpms increase slowly with speed-it's like the truck is struggling to pick up speed. So maybe this is my "manual" mindset but if the tranny was taking a poop wouldn't it rev out as if a "clutch or clutches" were slipping?
Maybe it is over fueling so much that it is bogging the motor/turbo down?
Like i said the tow tune runs decent up top, probably as fast if not slightly faster than my stock inj/turbo setup on extreme race but its crappy till about 3rd/4th, power is pulled as its more of a tow setup according to eric down low.
ALso i have noticed on my FPR Gauge the fuel dives down to 50psi from 72, not sure if this helps but more info is better than to little. only on the race tune, holds fine on tow/street
2005 F250 Fx4, Crew Cab, King Ranch
8" Procomp Lift w/ ext. reservoir shocks, Trac Bars, 22x14 Fuel Mavericks, 38x15.50 Fuel MTs, O-ringed heads w/ valve job, studded, 5" exhaust, Fass Ti w/ RR, XDP Sump, Coolant Filter, Singer 270Amp Alt, BPD 58v FICM, S&B Intake, Powermax, S&B intake Elbow, Snow WMI, ID Tunes, TSD tunes, PHP Ficm Programmer (Atlas 80 majority of the time), Mishimotor Radiator & Intercooler, BPD Water Pump, Gates HD Serp Belt, Flex-a-lite E-Fan Conversion