Guide to selecting VGT turbocharger for your 6.0:
The advantages of the VGT turbo over the non-VGT turbo is that it will always provide some type of low end for great to good street performance. Another advantage is that big injectors are not needed to get the turbo to come on at the lower rpms.
Depending on what you want out of your 6.0 Powerstroke, will be your base guide line.
: Towing for example will require a turbo that will spool quickly and provide most power at low to mid-range.
: Performance with occasional towing then fast spool, and provide most low mid to high range.
: All out performance mid to high range.
Tire size and gearing are also needed to be consider, along with injector size for turbo selection. I will give some examples of combinations that have worked very well, based on customer feedback, dyno results and my own experiences. I also believe that smallest to biggest turbo run the best, and unless building a race truck only with little street, not to go bigger than 75% nozzles.
The examples are based on stock injectors, and aftermarket size injectors, stock tire sizes, average Dyno results, results will vary depending on trucks health, dyno used and how it’s setup. I recommend having the engine studded with ARP part # 250-4202, egr deleted (off street use), at least 4” exhaust, cat deleted (off street), and cold intake kit.
1) M2 turbo with stock injectors, 40hp FICM tune, race tune, great daily driver, performance, and max towing (custom tow tune). Dyno results 490-520rwhp (custom race tune).
2) M2 turbo with 155/30* or 175/stock*, 40hp FICM tune, race tune, great driver, increased MPG, performance, and max towing (custom tow tune). Dyno results 540-560rwhp (custom race tune).
*note: 155/30 or 175/stock can run on stock fuel system.
**note: custom tunes are needed for best performance for stock injectors and a must for bigger than stock injectors.
The next examples of combinations will need to have the above and additional modifications done to engine to increase reliability. A fuel system consisting of fuel pump and regulated fuel return, for the bigger injectors, o-ringed heads with studs or ARP part# 250-4205 studs, or both. The ARP part # 250-4202 are good up to 550-570rwhp, to increase reliability when going above this range the ARP part # ARP 250-4205, or o-ringed heads with either standard ARP part# 250-4202 or both o-ringed and ARP part# 250-4205 must be used. I would also recommend transmission to be built; stock transmission can handle 550rwhp then after that it is only a matter of time when transmission will break.
1) M2 turbo with 175/30 injectors, 40hp FICM tune, custom race tune, very strong daily driver, performance, and heavy towing (custom tow tune). Dyno results 560-580rwhp (custom race tune).
2) M2 turbo with 175/75 injectors, 40hp FICM tune, custom race tune very strong performer, light towing (custom tow tune). Dyno results 590-600rwhp (custom race tune).
Performance with only very little towing:
1) Madmax turbo 190/75 injectors, 40hp FICM tune, custom race tune extreme performance, will tow light with tow tune. Dyno results 630-650rwhp.
2) Madmax turbo 205/75 injectors, 40hp FICM tunes, custom race tune extreme performance, will tow light with tow tune. Dyno results 660-680rwhp.
All out performance:
1) M3 turbo 205/75 injectors, 40hp FICM tune, custom race tune insane performance, waiting on dyno results estimated above 700rwhp.
2) M3 turbo 205/100 injectors, 40 FICM tune, custom race tune insane performance, estimated mid 700rwhp.