Turbo upgrade for 190/75 Injectors - Ford Powerstroke Diesel Forum
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Old 01-30-2013, 08:50 AM
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Turbo upgrade for 190/75 Injectors

So recently my stock injectors went bad and I ordered up a set of 190/75 Injectors from warrens. I've got studs, intake, exhaust, fuel pump, etc, but at the moment the turbo is still stock.

I figure, what better a time to swap it out than when the I change out the injectors. My question is, what turbo to buy? I want to stick with VGT type turbos and not too expensive. My thought was to go with either the RCD 68mm modded powermax or the MTW Stage 2 unit.

I am leaning towards the MTW Stage 2, but my question is: Is this the correct size turbo for my application? The stage 3 is $1000 more and I don't want to not be able to tow.

I need to be able to tow reasonable weights (~10,000Lbs) with a tow tune, occasionally. And this is a daily driver so I need reliability.

Thanks for any input!
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Old 01-30-2013, 09:03 AM
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190's really need the stage 3 to clean them up in order to get the most power AND be able to tow easily

A stage 2 is best matched with 175's but will "work" with your setup... might be a bit smokey though. I'm sure you could make a custom tune to tow with your setup.
But, what I'm trying to say is with a stage 3, you would be better off
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Old 01-30-2013, 09:25 AM
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This is a tough a question as there is a large gap in price between a Stage 2 and Stage 3 and there is also quite a bit of difference in performance potential between the turbos. I think that in order to be able to fully use a turbo's performance potential and even still have some left over, you're going to want the Stage 3. Your injectors will tap a stage 2 out real quick. The key though to running either turbo successfully is going to be in the tuning. I would say that if you decide to go with the Stage 3, then I would HIGHLY recommend a live tune so a performance tune and a towing tune can be written for you. The challenge to running the Stage 3 is going to be getting it to spool quick enough with a load attached to keep EGTs down. I have no doubts that once it is lit off you'll be able to keep EGTs down around 1300F no problem and no smoke. Conversely with the Stage 2, you will definitely flow more air easily down low than the Stage 3 will and it will spool a little quicker but you will be out of air at around low to mid 30s for boost.

If it were me, I would go with the Stage 3. I have ran both with 190/100s and I think the Stage 3 can be tuned tow with just fine. Hope this helps.
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Old 01-30-2013, 09:59 AM
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I agree that you should strongly consider a Stage3 with those injectors. I will be running a Stage4 with 200/75's which aren't much bigger.
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Old 01-30-2013, 10:01 AM
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Thanks for the reccomendations. So you think that the stage 3 would be BETTER for towing? I was under the impression that the opposite was true.

Also, I'd prefer the SCT tunes. Do you think it will be OK using those, as long as I get some custom ones made for each application (i.e. street, track, tow, etc)?
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Old 01-30-2013, 10:03 AM
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IMO the stage 3 will be Better for towing... reason is, the stage 2 might not have enough air to clean up that fuel and will end up running hot.

SCT tunes are the Best!!
That is what we all run and getting custom tunes or even lived tuned is best with the SCT
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Old 01-30-2013, 10:16 AM
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OK so the consensus is to go Stage 3, but MTW says on their web site that a better transmission is required for stage 3. Do you really think that is required? I'd rather not fix it 'till its broke. Any experience using the stock trans?
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Old 01-30-2013, 10:22 AM
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Windrunner (Nate) has been pushing his truck to the limit with stage 3's, larger injectors, and all that jazz for about what.. 6 months now.. He's looking into a built tranny but has not "needed" one yet I believe. That makes me think he is nice to his truck... Me, well I don't think my tranny would last a week with a stage 3:rof:

It could barely hold on while I had stock parts let alone now it cries daily with my minor upgrades
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Old 01-30-2013, 10:50 AM
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Re: Turbo upgrade for 190/75 Injectors

Quote:
Originally Posted by emscatton View Post
OK so the consensus is to go Stage 3, but MTW says on their web site that a better transmission is required for stage 3. Do you really think that is required? I'd rather not fix it 'till its broke. Any experience using the stock trans?
Imo, if you cant afford the tranny dont add the power. Unless financially capable of affording the $4-6k trans after spending money on the power parts.
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Old 01-30-2013, 12:39 PM
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I'm almost in the same ball park, running the modded Stage 1 with 175 /75's and it's still smokey. Could be the reason I can't build 20's + Boost but in the low teen's it's visible in the rear view mirror.

So I'm contemplating either a Stage 2 which the Mad Man is against or a Stage 3 which the Mad Man warns with my attitude i'll eat my tranny or a Meth Kit to provide the cooling and additional power i'm seeking.

I'm stuck with an 05 that fights me tooth n nail and refuses to run at it's limits.

D
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