RCZ's 370Z Journal.

RCZ

Sure, wanna bring me some wheels while you're here??

shumby

Looking good RCZ but 2 psi less and you are still looking at the same WHP gains as me? Something seems off to me here.

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Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

m4a1mustang

I believe the difference in WHP is dyno related. You were tested on a DynoJet, right?

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- Steve

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RCZ

Shumby, i dynoed on a Mustang dyno where I made 256whp stock and made 386whp. Estimated numbers for my car dynoing on a dynojet (like GTM's) is 420-430whp.

I don't know what you dynoed at stock, but *most* people who have gotten stock baseline runs on dynojets have put down ~275whp.

shumby

no I an talking about RWHP gain. we are both around the 130hp mark. the delta HP between the 2 dno should not be off. just the apsolute values.

__________________
Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

RCZ

What?

G37Sam

If RCZ dyno'd on a dynojet the gains would be greater than 130whp, I don't understand how you say only the absolute values are affected but not the delta's.

Rig Engineer you said? :rofl:

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m4a1mustang

Haha, this ^

Units of HP are treated differently by both dynos, therefor the units of change will not be the same across the two.

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shumby

lol what was your HP gain in total mine was 125 HP.

__________________
Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

shumby

sam no from what i understand the mustang and dyno jet are off in a linear scale so the delta's would remain the same but the actual numbers would be lower on the Mustang.

__________________
Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

RCZ

Yes, but 125whp on a dynojet is not the same as 125whp on a mustang. That's what Im trying to get at and what Sam explained above. You should have made something like 160whp to match my 125whp gain.

shumby

ok i get ya. what is the accepted % the the mustng and dynojet differ by.

__________________
Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

RCZ

Lol what are you trying to get at? I hope you're not trying to say that you at 6psi almost made the same power I did at 8psi because that will open up a can of worms you don't want to open right now.

Fast Intentions Long Tube Headers are here!

Fast Intentions Long Tube Headers are here!

G37Sam

Shumby, stop whining and making excuses and put that smaller pulley on!

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RCZ

He can't though. CFM is king when it comes to making power. You can't keep adding boost because CFM goes up to dangerous levels. The killer isn't PSI, its CFM...
You can't put on a 8psi pulley and make 4 psi and then fix it by putting in a 16psi pulley and make 8psi. The motor will blow from the CFM. I think you can get away with a 10psi pulley on the motor, but that would put it too close to the limit for my liking.

Not to mention the fact that I think 10psi pulley is out of the efficiency range of his SC housing? I may be totally wrong, but I thought thats why there were different stages for the GTM sc.