https://honda-tech.com/zerothread/1993881 <-here

 

 

its not a comparison of h22 w/o the smsp, and then one with the smsp.

infact those dynos cant really be compared b/c the stock motors weren't even dyno'd before you modified them. how do u know that one didn't dyno higher prior to the mods.

if you have those 'baseline' dynos for each motor, that would be helpful to draw the conclusions you are attempting to prove, or prove to us the hp gains from those modifications.

 

what? unless conducted on the same dyno with the same operating parameters, what you should be looking at is the shape of the curve.

However, untuned, before and after the header on a dynojet, I gained 11 hp with just that header and the stock IM. However the stock ECU was causing it to run at 11:1 A:F at best, and killed my midrange.

I don't really know what you're saying in regards to not dynoing engines before the modifications? It doesn't really matter what the engine in the civic made before because I changed pistons and cams. The dyno used typically puts a stock US h22 at mid-150s hp.

Both engines have good compression and leakdown numbers, so they are in fine shape, one isn't running "weakly."

In my case I did use the same dyno with the same operating parameters. It doesn't matter what the engines made before because I am showing on the same dyno that one car (the one with stock external, and modified internals) makes a TON more power than one with very high-dollar, high-quality external mods, after tuning both to maximum power.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ugen &raquo;</TD></TR><TR><TD CLASS="quote">its not a comparison of h22 w/o the smsp, and then one with the smsp.

infact those dynos cant really be compared b/c the stock motors weren't even dyno'd before you modified them. how do u know that one didn't dyno higher prior to the mods.

if you have those 'baseline' dynos for each motor, that would be helpful to draw the conclusions you are attempting to prove, or prove to us the hp gains from those modifications.</TD></TR></TABLE>

I think its pretty obvious which setup makes more power dude, stop being a nitpicker.

 

Exactly, it's not like I went to several different dynos to do this.

The Civic and Prelude were dynoed and tuned a month apart, but temperature, humidity and weather were very close to the same. 25 horsepower is well outside the margin of error of any dyno I'd be willing to have my car tuned on!

 

mm ic what ur saying