Nytro HP at a given boost level?

[samsquatch47]

Hey guys I'm running an impulse race gas set up with the 2871 on my Nytro with Boost-It fuel system.
Like most I have a boost knob and can adjust my boost psi. People always ask me what HP I'm running? I run it at 21psi every day on straight AV gas. Anybody ever dyno their Nytro at that approximate boost level?
I know it's hauling some a$$ but I'm just looking to get an est HP number to throw out when asked and not look stupid.
How about 25 psi? I could crank it up with C16 but 21 seems plenty
Cheers!

 

[hotmail]

Hey guys I'm running an impulse race gas set up with the 2871 on my Nytro with Boost-It fuel system.
Like most I have a boost knob and can adjust my boost psi. People always ask me what HP I'm running? I run it at 21psi every day on straight AV gas. Anybody ever dyno their Nytro at that approximate boost level?
I know it's hauling some a$$ but I'm just looking to get an est HP number to throw out when asked and not look stupid.
How about 25 psi? I could crank it up with C16 but 21 seems plenty
Cheers!

Estemated 330 , avgas is better than c16 egen it comes to engine knock

 

[samsquatch47]

Sweet thanks hotmail! Explains why it pulls hard!
What boost have you ran up to with Av safety?
I have Carrillo Rods and head studs as well in my motor.

 

[TBird]

Have you ran it against some other turbo's?

330hp could be close @ sealevel, a tad high in my opinion, but what matters more are the tune of the sled "how well is it running vs others"?

Using Tapatalk on Android ICS pad.

 

[samsquatch47]

Good point. I've compared it to a lot of 270 mcx nytros and it pulls harder then those. Plus way less lag with the front mount. I ride with modded mcx apex with a ported head running 21 and his pulls a little better.
Basically looking for an estimate for cabin talk while in the hills.

 

[TBird]

Lol, i see, in that case i would say your sled are running good.
And you can say "it's got enough" .
An actual HP # are hard to say within 10hp, cause i don't know the effeciancy of Impulse IC and header, but with an 2871 and a good tune, and the fact it runs harder then MCX270 i guess probably 310-320hp.

Using Tapatalk on Android ICS pad.

 

[samsquatch47]

Right on! Thanks man!

 

[BigFish BC]

the mcx 310 kit runs 19-21lbs boost with the 19t so in theory you should be making a bit more with the bigger turbo,but you are in that range.header design turbo configuration , intercooler efficiency & fuel set up can change things allot.

 

[samsquatch47]

Thanks for all the info guys!
Always cool to learn more about our sleds.

 

[hotmail]

Sweet thanks hotmail! Explains why it pulls hard!
What boost have you ran up to with Av safety?
I have Carrillo Rods and head studs as well in my motor.

I know at sea level and 9:1 it dynoed 360hp at 26 psi.

 

[TBird]

26 / 14.7 * 130 + 130 = 359,9HP.
21 / 14,7 * 130 + 130 = 315,7HP.

Seem as a pretty efficient system, and that my guess was pretty spot-on.

Remember, an dyno is just a tool, so i never compare one dyno session done @ one dyno against an dyno session done @ another dyno.