Turbo help with 190/75's

Blacksmokin22 · Feb 10, 2013

I have thought about doing a mtw stage 2, but heard they whistle and I do not want the whistle. Also been looking at rcd s300 64mm or 66mm. Can't decide which route to go down. If I go the non Vgt route I'm not exactly sure what I would need to change to make the system work. Any of your thoughts ideas or opinions would be nice!

I have head studs, egr delete, warren 190/75's, fuel tank sump, cat filters around fuel lab fuel pump, reg return. 2006 single wheel f350 w/ 6" lift 37's on 22's. mostly highway & town driving but do some towing (race car and enclosed trailer every weekend) thanks for the help guys

svilla · Feb 10, 2013

I have 190/75's and a II 62/70 non-VGT. If you do not like whistle, then a non Vgt may be for you. They come with a learning curve though. By that I mean you need to learn how to drive them. Tuning will be key for day to day driving.

Here is the list I have on mine; 62/70, Diverter valve, acufab intake elbow, and ported air intake manifold. I am running Industrials extreme X or what ever they are calling their new tune.

This combo runs great. I am able to run the 190/75's at full fuel. The only time I black out the hiway is when I floor the truck in 5th gear. Daily normal driving my truck is smoke free.

Pizza pig · Feb 10, 2013

There is a learning curve to non vgt chargers, nothing crazy though. My vote goes to a 64/68/.84 T4 charger with divided up pipes.

That lift and wheel/tire size is always going to kill you, especially spool up. Thinking about a transmission at all? A higher stall converter will help spool up characteristics of a non vgt unit.

svilla · Feb 10, 2013

Forgot to add that I have 36's (315/70R18) on mine.

Are you planning on staying with one turbo? If so, I think you would really like that 64/68/.84 that pizza pig recommended, with divided ups from CED (cutting edge diesel). The diverter is kind of a pain in the ass. I got a good deal on mine, and have not had any issue with it yet. I also run mine a little differnt, I take my 10 PSI that opens the gate from my intake elbow. Works great.

windrunner408 · Feb 10, 2013

Just to set the record straight, the Stage 2 does not whistle unless you have an 03 10 bladed turbine wheel put in it. I had the Stage 2 with the 13 bladed wheel for a little bit and it didn't whistle at all. Now as far as whether or not a Stage 2 flows enough air to support 190/75s is debatable and depends on the tuning to make sure enough boost is able to be built up. I know it will hands down spool faster than any non-VGT option, which will be good for your tall tires and towing that you want to do; but as was mentioned, that is all going to come down to personal preference.

Blacksmokin22 · Feb 11, 2013

Pizza pig I have heard about that learning curve on non vgt's. and transmission right now no plans of doing anything. I know that in the future I will blow it to pieces ill wait till then to replace with a built trans. Svilla I think that I'm going to stay single turbo. I'm still on the fence with Vgt vs. non Vgt... Windrunner408 I wonder if the stage 3 would do what I'm needing and wanting. Quick spool up and good for towing. It doesn't bother me if the stage 2 doesn't clear up Completly, but want enough boost to run inj properly. I think that I fall into Vgt turbos more because I understand the operation more than the non. Thanks everybody for the helpful replies!

Vengeance · Feb 11, 2013

I am running the Mad Hybrid currently, with stock intake, 4 inch turbo back, no muffler, and it is as quiet as a stock truck until I mash the skinny and it will talk a little but nothing like what the powermax is.

I am running a set of 190/75 from Renegade Diesel and my street tune is maxed at 1400 on the egt's and my d/d tow tune won't get over 1200 at wot.

svilla · Feb 11, 2013

If you are near Pensacola FL, you are welcome to drive my truck. This way you can see if a non-VGT is for you. I have never driven any MAD turbos, but this truck spools faster than stock. To be honest I have only hammered down WOT twice. It touched 1300 on EGTs, and it was ridiculous. Faster than a lifted tank on 36s needs to be. lol.

What really puts a smile on my face is rolling into the throttle from a stop and going thought the gears at around 10psi.

The draw back is, I threw alot of parts at the truck to make it run the way it does. To be honest I wouldn't change a thing on the truck. Every part on it serves a purpose. It was built with an end goal of running twins at around 650 horse. She is getting there.

Blacksmokin22 · Feb 12, 2013

Svilla I'm in central Oklahoma. I'd love to drive your truck to see and feel the difference. I work in a dealership and understand how the Vgt turbos work. But when it come to non I tend to get a little lost, not used to it I'd guess. Thanks for the offer man!! When you say threw alot of parts what do you mean?

svilla · Feb 12, 2013

The injectors, gutted intake manifold, and diverter valve. Then you have to have the fuel system to support the 190's, and the a way to monitor vitals (CTS). Then I had to go though 5 different tunes from different people. You know the usual. lol.

Non-VGTs work basically the same, only difference is you do not variable veins. In order to keep the turbo in its "sweet spot" you have to adjust trans tuning. Mostly you hold the gears a little longer, and most tuners will make sure that the trans will not go into overdrive TC locked until 55- 60 MPH.

And instead of hammering the throttle from a stop, you have to roll into it. This keeps you from choking out the turbo. It is driving the truck with these differences that give the truck a learning curve.

When I first got the turbo, I did not have any real mods done to the truck. I hated the turbo. I really hated the turbo on the highway. Tuning helped alot. Then I upgraded to bigger injectors. Then I upgraded to the diverter valve, and modded intake manifold.

All of these changes helped the truck and the driving manors. Now it is a blast to drive this truck. I do not do wide open throttle runs with the truck, never done a boosted launch 2wd, or 4wd. There is really no need to for me. I also want my trans to live a little longer. lol.

I am not trying to talk you into or out of a Non-VGT. I am sure the MTW turbos are very street-able and fast. I don't have any experience with them.

Maybe some one who has had both can offer a little in sight? I would like to know if the MTW turbos hands down spool faster.