New Injectors.. .need help

[Adamv7010]

I'm looking at upgrading my mostly stock 06 ccsb...

I'm pretty set on jesses 175s or 190s...but can't decide on nozzle selection.

I'm going to be using a mtw stage 2

I'm shooting for a daily 500rwhp and still be able to tow w a tow tune which seems to be common.

I'm looking for pros and cons of each nozzle selection...stock, 30%,75% or 100%

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[Adamv7010]

Ttt

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[twoicebergs]

If all you want is 500ish, 175/50 plus the Stage 2 will do it no problem. Stock nozzles would probably work as well, but it would limit the available fuel and ultimate HP. You can always cut back fuel via tuning or your foot, but you can't add it without bigger holes. If you are only limited to 30, 75, 100 nozzles, the 30s should achieve your goal, but the 75s will give you the option to tune in the bigger dump, if needed. Of course the other option is to think about growth and go 190/75s.

Read some of the posts on upgraded turbos and injectors/nozzles run by members here. Most of their successes and problems are well documented.

I will add that my Stage 1, high performance tune and stock injectors is a very good platform with about 470 rwhp. The reality is the extra HP is just fluff or grin-factor for brief indulgences. For extended or heavier towing I would use a lesser tune, just to move the injector timing to an easier position and give me a more normal high rpm fuel schedule and lower EGTs. With a larger injector and reasonable nozzle, you could run a stock or aggressive tow tune and you would have the extra power throughout the pedal range, if needed.

[Adamv7010]

Originally Posted by twoicebergs

If all you want is 500ish, 175/50 plus the Stage 2 will do it no problem. Stock nozzles would probably work as well, but it would limit the available fuel and ultimate HP. You can always cut back fuel via tuning or your foot, but you can't add it without bigger holes. If you are only limited to 30, 75, 100 nozzles, the 30s should achieve your goal, but the 75s will give you the option to tune in the bigger dump, if needed. Of course the other option is to think about growth and go 190/75s.

Read some of the posts on upgraded turbos and injectors/nozzles run by members here. Most of their successes and problems are well documented.

I will add that my Stage 1, high performance tune and stock injectors is a very good platform with about 470 rwhp. The reality is the extra HP is just fluff or grin-factor for brief indulgences. For extended or heavier towing I would use a lesser tune, just to move the injector timing to an easier position and give me a more normal high rpm fuel schedule and lower EGTs. With a larger injector and reasonable nozzle, you could run a stock or aggressive tow tune and you would have the extra power throughout the pedal range, if needed.

I rarely tow...when I do its 8k or less.

Would I be able to do say...190/75 as you suggested with let's say a MTw hybrid or stage 2 and have Vivian cut fuel enough in a tow tune, or even in a hotter tune to manage egts and still maintain tow-ability in a tow file and street performance in the Looney wild file?

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[jwsland]

Like mentioned Stage 2 and 175's you'll hit 500rwhp. I'll be towing daily with the 175 setup once work picks up. The 155/30 stage 2 configuration I had already proved itself at work for me. I only dynoed 440rwhp though. From my research here the 175 stage 2 setup will completley managable towing with proper tuning and you'll still have a fun truck. Thats why I chose the setup. Most will agree 190's should be used with a Stage 3 (if your going the mtw route)

I dont have experience with the same cc size injector and different nozzles. But power should be comparable.

I made my 515rwhp with the 175's on a tune written for 155cc injectors. I was the only truck at the dyno event that was smokless...

[Adamv7010]

Originally Posted by jwsland

Like mentioned Stage 2 and 175's you'll hit 500rwhp. I'll be towing daily with the 175 setup once work picks up. The 155/30 stage 2 configuration I had already proved itself at work for me. I only dynoed 440rwhp though. From my research here the 175 stage 2 setup will completley managable towing with proper tuning and you'll still have a fun truck. Thats why I chose the setup. Most will agree 190's should be used with a Stage 3 (if your going the mtw route)

I dont have experience with the same cc size injector and different nozzles. But power should be comparable.

I made my 515rwhp with the 175's on a tune written for 155cc injectors. I was the only truck at the dyno event that was smokless...

I'd imagine with proper tuning you'd have been somewhere around 530 ish.. wouldn't ya think ?

You have any track times?
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[jwsland]

Some guys here who I spoke with off the forum said it should have been closer to 575rwhp.

I'm not sure what it feels like but if your looking for a fun truck 175's and a mtw 2 you can put your truck sideways from 30mph. Thats fun!

[Adamv7010]

Originally Posted by jwsland

Some guys here who I spoke with off the forum said it should have been closer to 575rwhp.

I'm not sure what it feels like but if your looking for a fun truck 175's and a mtw 2 you can put your truck sideways from 30mph. Thats fun!

Keep in mind I'm on a stock tranny

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[twoicebergs]

Looks like you got lots of replies, thanks guys!

With that load, or even more you should be able to tow on a cut-back tune. Stage 2 would be the minimum recommended, but a hybrid should work for your stated intention. PM or call Adrian to discuss what might be best for you. The reason you don't want it smaller is, if you decide to run a hotter tune, you will need more turbo to clean up the smoke. Again, do a search of users and results achieved.

If I upgrade my injectors, I am still sitting on the fence on 175/75 or 190/100. The boys are even suggesting 190/150, geez! Of course, I would have to step up to a stage 2 or 3. I don't know if it worth the money. Who knows, I may just go 175/75 and keep the turbo I am using and see how it goes. Since I don't plan on racing anyone except myself or getting traffic tickets, going really large isn't high on my priority list. I would rather put 400-500hp into my Evo X for the wow factor. I can do that for the price of new diesel injectors. The joke is, I already have a spare set of injectors waiting to be modified.

[TooMuch03]

Originally Posted by jwsland

Some guys here who I spoke with off the forum said it should have been closer to 575rwhp.

I'm not sure what it feels like but if your looking for a fun truck 175's and a mtw 2 you can put your truck sideways from 30mph. Thats fun!

Who would tell you such a thing! Horsepower is something that is a lot more difficult to come by than most people think. Not trying to rain on your parade, but I think 550 is about the best that setup can do. 530 is a far more realistic goal.

OP, since you don't tow very heavy, 175/75 should work with the stage 2. Personally, I wouldn't go any bigger than that.