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Forum nameTurbo/Nitrous Tech
Topic subjectRE: Well, lets just say this...
Topic URLhttp://forums.2gnt.com/dcboard.php?az=show_topic&forum=8&topic_id=77214&mesg_id=77307
77307, RE: Well, lets just say this...
Posted by Mattchew, Dec-31-69 06:00 PM
OK I do appreciate you setting that straight doug because I would rather be corrected than just told I'm wrong. Let me see if I can address any of the ones I said.

"Incorrect. The S20G uses a 10cm^2 TD05H turbine section, the S20G-H uses a std. TD06H, and the S20G-N uses a 10cm^2 TD06H. That's all on Hahn's website."

I took my information on that straight from Hahns site. Here is the page I was looking at. http://www.hahnracecraft.com/hahn/parts/2ndgensuperturbos.htm

If you look at the "more" part it says the exducer is bigger as you go to different models.

"Incorrect. Tuning and race gas will not even come close to increasing output by 60-70 horsepower on the setup he ran."

I'm not saying race gas alone would give him 60-70hp. I realize that race gas does not increse hp but does help with pre-ignition. But doesn't this reduction allow you to run higher boost levels "safer". #edit I also was saying that his car has more potential than just 337hp.

"Huh? As far as I know most gasoline fuels should have the same potential energy regardless of it's octane rating. Higher octane fuel delays pre-ignition. It burns slower. You only need higher octane fuel if you're increasing the compression ratio (I'm not talking about static CR here guys.)"

All I'm saying is Armond was able to achive better numbers tuning with race gas vs pump.

"Incorrect. Drag and load don't reduce an engine's power output. Acceleration maybe. Now... the stock ECU will advance ignition timing at higher loads and that would effect power output."

I have no reply to that other than I was wrong :)

"Whoa, you flip-flopped. What about moisture and barometric pressure?"

OK, sure I'm not including all the factors here and I missed that one as well. Really what is the point though of debating dyno hp vs highway hp? Most people when they are giving hp numbers give the dyno numbers. There are tools out there for measuring real world conditions but I have not been to the dyno enough to know if there is an actual dyno that can give you "real world" numbers. Dyno Dynamics is a much better dyno for getting an idea of that but some people don't want to use it because they like the bigger numbers they can get on dyno jet or dyno pak.

"Huh? Am I the only one that's confused by these comments?"

That was not a very clear statement. What I meant was a run down the track in 110 degree heat with high humity tends to be worse than a dry winter with 50 degrees outside. Same thing for a dyno. Most the guys I've seen run better both at the dyno and the track in the late fall.

Clearly Doug I don't know as much as you about this but I do appreciate you taking the time to give your input and explain things.
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