Nitrous: 50HP Shot on LB7

[03-GMC]

So i finally got my trans done and EFI on my truck. My goal is to get 500RWHP where i am at. I took her to the dyno today and got 454RWHP pretty happy with those numbers seeing how i am at 4500' in elevation . Would a 50HP shot of Nitrous be ok to run on my truck and safe to get me my 500RWHP numbers or should i go a different route???
Thanks,
Derek

 

[Samdweezel05]

Like I said before, you just need to find a dyno further down the hill.

Phil

 

[03-GMC]

Yeah but Nitrous would be so fun to play with

 

[Stingpuller]

Nitrous

Run a .050 jet just after the turbo and you will get what you want. Jeff

 

[03-GMC]

Ok but will this be ok on stock motor? I know you have to pay to play but i dont feel like paying for a motor just yet. Haha

 

[03-GMC]

Bump before i go to bed

 

[MattZ71]

Ok but will this be ok on stock motor? I know you have to pay to play but i dont feel like paying for a motor just yet. Haha

x2


50hp shot be safe for a tune only truck and trans??

 

[GMC_2002_Dmax]

From my experience on the dyno a .075 jet was worth 180 RWHP and 300 LB/FT RWTQ on a dyno on an otherwise 500 RWHP fuel only tune.

I think a .025 pill would be worth 50 HP

 

[Stingpuller]

Nos

So Tony your saying (from your sig) that 780 hp gets you a 12.00 timeslip? Jeff

 

[SIKDMAX]

680 Maybe Jeff

 

[McRat]

IIRC, I got about 100rwhp from a 0.075 jet. But it depends on how much fuel you have available. I was already fairly "clean" when I did it.

 

[MMLMM]

still think you can hit 500+ without n20.....even at 4500ft....

 

[paint94979]

still think you can hit 500+ without n20.....even at 4500ft....

x2

 

[McRat]

There are some factors that come into play. What brand dyno, and what the correction settings are. If no correction, what was the true DA'. If the temp was above 70 deg, or the humidity is high, the DA is higher than the physical altitude.

I know we ran .5 seconds slower running in Colorado from a previous 2000' DA run, or over 10% of our HP.

 

[03-GMC]

This was on a dynojet and are uncorrected numbers. Run conditions are 80.98* F, 25.96 in-Hg, Humidity 17%. My top corrected numbers were 528RWHP but since i am not at sea level i cant really use those.

 

[McRat]

This was on a dynojet. 80.98* F 25.96 in-Hg, Humidity 17%

Did the sheet say: SAE CF = 1.05 or something similiar?
It's printed in the either header with the text sheets, or it's part of the MAX HP dialogue on the bottom or top of the graph sheet.

 

[03-GMC]

Did the sheet say: SAE CF = 1.05 or something similiar?
It's printed in the either header with the text sheets, or it's part of the MAX HP dialogue on the bottom or top of the graph sheet.

It says CF: UNCORRECTED Smoothing: 5

 

[McRat]

DOH!! OK, uncorrected.

To be honest, most people report corrected numbers. SAE is the most common, and STD is used as well. STD will yield higher numbers than SAE.

Just going off the top of my head, I'm thinking you are about 6500 DA. 25.96 is really low pressure.

 

[03-GMC]

DOH!! OK, uncorrected.

To be honest, most people report corrected numbers. SAE is the most common, and STD is used as well. STD will yield higher numbers than SAE.

Just going off the top of my head, I'm thinking you are about 6500 DA. 25.96 is really low pressure.

Yeah i dont feel right about reporting corrected numbers its not my true HP here. Still think i could squeeze a little more out of my tune?

 

[McRat]

Yeah i dont feel right about reporting corrected numbers its not my true HP here. Still think i could squeeze a little more out of my tune?

"Squeeze" is a nickname for the bottle. You can always "squeeze" some more HP

How much boost you running peak sustained? This also controls how much power a LB7 is capable of making. Some folk aren't comfy with running over 30psi with the IHI charger, since there have been failures starting at about 32psi, and nearly 100% of them fail at 40psi.

IMO, your sea level HP is going to be about 490-495 based on the info you posted.