bomber lite, other mild turbo options for 3G trucks?

[DLeno]

All,



Been reading up on mild turbo charger options for the 03-04 trucks. By "mild" I mean 400 rwhp region, stock-like spoolup, good towing performance, etc.



I'm hearing about the bomber lite from Piers and perhas another option is out there from DZ. Vaughn, you were playing with the Piers -- any more results yet?



Need something that will handle a 150 HP box. Specifically, for bombers on a budget, I'm looking at the following solution:



1. Piers hybrid. very low price plus a core charge

2. TST box

3. Scotty or AFE

4. exhaust only if I need it.



comments please?

 

[Vaughn MacKenzie]

DLeno, I would say at 400hp you'd be beyond a turbo like Piers "Bomber Lite" 3G turbo. You're already in PDR40 territory (or Quadzilla, DD's new turbo, etc. ). You might be OK if you drive by your gauges but I would speculate a Bomber Lite would be more appropriate for milder boxes (say 100hp or less such as the EZ) or DD1 injectors.



Basically if your choice is to run the stock turbo and a Piers modified one then go with Piers'. But eventually to get the most out of a TST box you'd probably be better off with a bigger huffer



I haven't been able to get my Piers turbo back on due to our very lousy winter weather so I can't commment too much on more testing



Vaughn

 

[BHaner]

I tested the PDR turbo and found while towing a 200° decrease in egt's. With my ez box on level 6 this put me back into the "safe" range. I think that for the price it would be a good match for the 150 box. However if you are going for multipe boxes, or injectors... time to step up to a larger one.

 

[RDietze]

Vaughn,



it was my thinking that the new boxes (timing/pulse) from edge, tst... banks were suited for using the stock turbo OR is the case, you can use the stock turbo but it would have limitations in EGTs without the application of an improved flow turbo?

the piers hybrid 35/40 would be an upgrade from stock (as you know).



thanks ron

 

[David Muench]

Don't forget upgrading the fuel delivery. .

 

[DLeno]

I'm hearing that the 3rd gens run hot to begin with, especially in higher altitudes, So my thought was that the only way TST and Edge can claim "stock" application with their box is with the EGT-based fueling holdback. Guess its hard to know without testing, but it seems like the bullydog pressure/timing box would be a reasonable benchmark and that by now we should have some good knowledge on the air requirements for a 150HP box. I just wonder how far the Piers hybrid would take me and if anyone has pushed it to 400 HP.



Another subject of great interest is whether or not duration (instead of pressure) will represent any difference in EGT management -- that is, will the TST box be any easier or will it be harder (than the bullydog) to control EGTs at those power levels?



Bhaner, were you running just the EZ at 70HP? any experience at higher power levels?



Wondering also if the Piers would be a good as the smaller half of twins!

 

[XcumminsX]

go with the scotty III and the exhaust i have from big-exhaust. Sounds awesome and is cheap and lowers egts. From these 2 things it will be about 800 bucks

 

[DLeno]

Originally posted by David Muench

Don't forget upgrading the fuel delivery. .

at 400 HP? I thought the low pressure fuel system was good to about this level.



Suppose you ran the TST box, the Piers turbo, scotty III, and still had $600 to spend. Do you spend that on an exhaust manifold (ATS or RV 3-piece) or turbo-back exhaust? If the goal is usable HP and EGTs.

 

[BHaner]

DLeno, EZ was on level 6. I think that is 80hp /240-250tq Stock turbo temps were 1400° maybe higher depending on how long I was on it. With the PDR turbo I was unable to get above 1200°.



I think with the timing boxes you will be able to run higher hp with lower egt's than the pressure boxes... But time will tell.

 

[RDietze]

Originally posted by DLeno

Suppose you ran the TST box, the Piers turbo, scotty III, and still had $600 to spend. Do you spend that on an exhaust manifold (ATS or RV 3-piece) or turbo-back exhaust? If the goal is usable HP and EGTs.

turbo back exhaust. the manifold in itself will do little to lower overall EGTs. the manifold will help in low-end spool up. the exhaust (muffler) is far more the bottleneck on your air flow path than the stock manifold.



a better scenerio here: say you've got $1k gingling around in your pants pocket..... get them both .



i went banks monster exhaust, the ONLY true 4" exhaust turbo to tip.

 

[Vaughn MacKenzie]

RDietze & DLeno, BHaner makes a good point the turbo will bring EGTs back from an unsafe to a safe level, so from that standpoint it would be a good way to go until you get into significant power upgrades



Vaughn

 

[Vaughn MacKenzie]

TEst POST

 

[Vaughn MacKenzie]

Wow this board is whacked



Anyway trying this again. . .



based on what Byron is saying this turbo is good for bringing EGTs back into check when you're running a box or injectors only (not radical boxes or injectors of course). . .



Now let's see if this posts works

 

[Vaughn MacKenzie]

TEst POST

 

[Vaughn MacKenzie]

OK this board is REALLY whacked! My first reply suddenly shows up AFTER I made my "test" post and last reply yet it shows up ahead of it

 

[BHaner]

Boy Vaughn, your computer must need some sunshine too... Working here.

 

[Grunt]

Vaughn... .



You need to take a few days off

 

[Vaughn MacKenzie]

Me an' my PC need a few days in Honolulula! :-laf

 

[DLeno]

hey thanks, guys. the question I want to answer is this: once committed to a turbocharger as a way of eliminating the weakest link in the air system when utilizing a fueling box,



1. will the $300 cost (to have piers wave their hands over my turbo) yield a satisfying result with the likes of the TST boxb, or

b

2. Will I wish I had put that $300 towards a different turbo entirely



The question has to do with the ability of the piersified turbo to make use of the all the HP TST might have to offer. If it is a "80% solution" meaning that I can use 80% of the TST power (protected by EGT-driven fueling cutbacks), thats worth the $300 to me until I can get more serious. However, if the peirsified turbo is only a "50% solution" I may choose to put that $300 towards a real B1, quadzilla, DD or whatever other solutions there might be out there. keep in mind that I don't want too much turbo because my bottom end will suffer (6 speed... ) and that I"m not interested in injectors at this point (want to stay with just the box for fueling)



now then, to make the most use of $$, I'd invest in a turbo that might one day become the smaller of two



One particular question I had on the piersified turbo: this is a stock HY-10 machined to accomodate an HX-40 compressor and contains 0% balenced pinwheels on both the exhaust and compressor side. doesn't the small impeller mated to the largish compressor present some issues if the compressor can't slow down fast enough to avoid bark? Just trying to understand the drawbacks of the piersified HY-10

 

[BHaner]

Without someone actually trying the setup it is hard to say. I have a little pool of money just waiting for an edge juice or tst box. As soon as they let it go. . I will get one. I would be happy to reinstall the pdr turbo and give results for everyone.