72mm vvt stock motor setup.

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
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Don't forget tuning:happy2:

An adept tuner will know what your dealing with and tune accordingly

I have two auto cals from different tuners, both calibrated to my set up, one tune drains rail like a mo fo in the big tune and throws a low rail code every time I hold wot into the upper rpm, the other tune never has pulled the low rail code and seemingly makes more power too, albeit lower in the rpm, it's something that has always struck me as odd, but i guess the big difference is that the tune that pulls the rail code feels like its still pulling hard when the code pops, the other tune trims the fuel out which is why I think I feel the power start to fall of around 3400rpm but it never throws a rail code, if I had more fuel to play with in this tune I believe that I could run another 3-400 rpm and still be making good power.

Like I said though, an adept tuner will know what parameters to work within for your application:thumb:

Tuning is witchcraft, or wizardry:roflmao:

this would fall under my "draining rail" part. if you cant hold decent rail to carry power through to the upper Rs, it does you no good. A tuner cant make a poor fuel system give you more hp in the upper R's. this is where dyno tuning can really help get the most out of a rig. or run it down the track run after run making tweeks to see what way your mph starts going.

What I mean is the 4094 has enough potential to blow a piston, maybe I'm wrong :eek:

If you or anyone else are not already planning for a built motor or have it in your concious that a built motor is in your future one way or the other with the mods we are talking about here, your in the wrong game.
 

TROJAN366

Gold Rush
Jan 13, 2012
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If you or anyone else are not already planning for a built motor or have it in your concious that a built motor is in your future one way or the other with the mods we are talking about here, your in the wrong game.

exactly. Even if you don't plan on building a motor. You have to keep in mind that yours is on borrowed time every time the pedal touches the floor.
 

Cknight199

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Aug 23, 2012
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If you or anyone else are not already planning for a built motor or have it in your concious that a built motor is in your future one way or the other with the mods we are talking about here, your in the wrong game.

Oh I plan on one for sure, just would prefer later down the road when am not having to pay for school. If I had the means my motor would be built tomorrow.
 

MarkBroviak

DMax Junkie
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May 25, 2008
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72mm VGT multiple truck comparisons

Here is some more food for thought on this subject guys. This is the dyno graph from multiple trucks with the lowest being a stock fuel system lbz on a big tune up to my truck on the TS 2013 race tuning that I got 894hp out of and ran the 10.96(sorry the tach signal dropped out and that why the sheet doesn't show you the whole curve but it is up there and flat to 4200rpms+). Hope this gives you the answers that you are looking for with this turbo discussion. Carry on guys!:thumb:
 

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Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
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Phoenix Az
Here is some more food for thought on this subject guys. This is the dyno graph from multiple trucks with the lowest being a stock fuel system lbz on a big tune up to my truck on the TS 2013 race tuning that I got 894hp out of and ran the 10.96(sorry the tach signal dropped out and that why the sheet doesn't show you the whole curve but it is up there and flat to 4200rpms+). Hope this gives you the answers that you are looking for with this turbo discussion. Carry on guys!:thumb:

Thanks mark! Good info to show

Well safer than 2900 or 3200 pulse where most will tune. I heard korry Willis tunes to 2900 us

Just because a tuner only tunes to a point doesn't mean it has any affect on safety. Your insinuation and rumor are not helping anyone. I suggest you ask kory before posting for him.
 

IdahoRob

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Jun 5, 2007
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What I like to look at is the average rpm range needed to get the job done, not the peak rpm.

Dyno, then yes look towards rpm vs HP but who really builds a set-up for the dyno?

Drag racing, your truck shifts gears correct? So extending shift points can have a great affect on improving ET. Look at a log of stock shift point of the 4 to 5 shift. Now dropping into the 2300-2400 rpm range is not doing you any favors on the drag strip.

Sled pulling, same thought process just different set-up.

Think averages not peaks.

As for big injectors vs small injectors, it is all relative. Pulse width, spooling, etc. can all be adjusted no matter what size injectors. HP and safety are a benefit of larger injectors, but to say stock injectors can't spool "xyz" charger is just not true IMHO.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,670
5,818
113
Phoenix Az
What I like to look at is the average rpm range needed to get the job done, not the peak rpm.

Dyno, then yes look towards rpm vs HP but who really builds a set-up for the dyno?

Drag racing, your truck shifts gears correct? So extending shift points can have a great affect on improving ET. Look at a log of stock shift point of the 4 to 5 shift. Now dropping into the 2300-2400 rpm range is not doing you any favors on the drag strip.

Sled pulling, same thought process just different set-up.

Think averages not peaks.

As for big injectors vs small injectors, it is all relative. Pulse width, spooling, etc. can all be adjusted no matter what size injectors. HP and safety are a benefit of larger injectors, but to say stock injectors can't spool "xyz" charger is just not true IMHO.

exactly but knowing where you peak hp is, is where you start from, that was the point i was getting at. might have used a bad choice of words prior :D, thanks Rob

It's just a reference. I didn't say I know for sure I said "I Heard"

its that kind of thing that people take from being "i heard" to "that what he does". thats one of those things better left to the guy who knows ;) :D
 

Cknight199

New member
Aug 23, 2012
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Salt Lake City, Utah
What I like to look at is the average rpm range needed to get the job done, not the peak rpm.

Dyno, then yes look towards rpm vs HP but who really builds a set-up for the dyno?

Drag racing, your truck shifts gears correct? So extending shift points can have a great affect on improving ET. Look at a log of stock shift point of the 4 to 5 shift. Now dropping into the 2300-2400 rpm range is not doing you any favors on the drag strip.

Sled pulling, same thought process just different set-up.

Think averages not peaks.

As for big injectors vs small injectors, it is all relative. Pulse width, spooling, etc. can all be adjusted no matter what size injectors. HP and safety are a benefit of larger injectors, but to say stock injectors can't spool "xyz" charger is just not true IMHO.

So that's why the 4-5 shift always seems stronger than the others? It seems like it pulls more in 5th gear. Could just be me.
 

TheBac

Why do I keep doing this?
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Apr 19, 2008
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It's just a reference. I didn't say I know for sure I said "I Heard"
Thats the very definition of hearsay, and crap like that can ruin a person's business. So please stop doing it.


Listen to what James and Rob and Mark are telling you, for chrissakes. Take the blinders off and read what they are saying. if you dont understand what they are telling you, then ask them to clarify. Dont assume.
 

SSchmi5519

LLY Cult Leader
Oct 19, 2008
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Round and round we go. Circling back to the same point again and again. Im surprised these guys have enough energy to keep trying.