OK as I mentioned earlier I was at dyno. I don't know what software they use, but it seems to be not compatible with VTEC engines as all DOHC VTECs were 20-30 hp down (Del Sols, Civics, Ludes... no matter).

So numbers really dissapointed me. My car is well maintained as I'm kinda freak in this matter . Oil changes every 8000km, filters changed more often than it is needed and so on.
My engine setup:
ebay short ram
Accord Type R tranny
NGK blue spark wires
NGK copper spark plugs
Clutchmasters fw
IABs open all the time
hi-flo cat
Fujitsubo catback
so basicaly motor is stock



Well, I really don't believe these numbers, so I'd like to discuss the shape of power and torque lines. IMO torque line is strange as it drops down just after VTEC crossover.
Any opinions (and maybe solutions what to do with such a shitty car ) ?

I'd like to add my friends 5gen pure stock did the same power and less torque (178Nm)... So I'm really confused

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pentaq &raquo;</TD></TR><TR><TD CLASS="quote">



</TD></TR></TABLE>

From what i can see, thats not to bad for basicly a stock motor

 

Is 154hp a good result of H22? If so, I'll sell this crap

 

well, from what i have seen, most stock US H22 are around 160-170 whp depending on wear and tear on the motor and modifications.

 

What kind of dyno? Peak numbers don't mean much of anything between different dyno types.

 

You're peak numbers are pretty good like the other post said, except for the big drop off of HP and torque after 5000 rpms. The H22 usuallly doesn't drop power until after 6500 rpms. What kind of dyno did you use? Also, you didn't show the typical loss of power and torque at the VTEC crossover. Have you had any tuning done? Your numbers are higher than average making us wonder?

 

What kind of dyno? For sure not those ones you meet in the States. It is produced here in my country and quite wide spread here.

My English is too weak to describe it better in technical matter. But you just simply park your car with front wheels in between two rollers and voila...
What makes me wonder is that first they accelerated car to 2krpms on 4th gear and looked at the speed. And this speed was the parameter for the dyno software. Not exact gearing from tranny or such (Is it the same in the US?). I'm not sure if this method is proper for dynoing vtec engines (and if it matters at all)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pentaq &raquo;</TD></TR><TR><TD CLASS="quote">My engine setup:
ebay short ram
Accord Type R tranny
NGK blue spark wires
NGK copper spark plugs
Clutchmasters fw
IABs open all the time
hi-flo cat
Fujitsubo catback
so basicaly motor is stock
</TD></TR></TABLE>

Although your peak numbers are average for essentially a stock motor, that sharp drop off does seem odd...like someone said, the stock cams usually choke off at around 6500 rpms.

Do you happen to have an A/F graph with that dyno run? What other fuel mods do you have to tune with? If there is none, you might as well get something to help tune. A VAFC would help at this stage.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Finest &raquo;</TD></TR><TR><TD CLASS="quote">Although your peak numbers are average for essentially a stock motor, that sharp drop off does seem odd...like someone said, the stock cams usually choke off at around 6500 rpms.

Do you happen to have an A/F graph with that dyno run? What other fuel mods do you have to tune with? If there is none, you might as well get something to help tune. A VAFC would help at this stage. </TD></TR></TABLE>

I have started another topic covering this issue. You may look at https://honda-tech.com/zerothread?id=887501

 

Wait, I just saw the units on the dyno. I thought it was whp! It looked like 200 whp on the plot, but you quoted 154 whp. What's the conversion? 154 whp is 6-20 whp down on the average H22 dyno with a few mods. Try to get some more information on what type of dyno you are using. It might not be calibrated right, since you said other dynos were 20-30 hp down from the norm.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wannabe &raquo;</TD></TR><TR><TD CLASS="quote">Wait, I just saw the units on the dyno. I thought it was whp! It looked like 200 whp on the plot, but you quoted 154 whp. What's the conversion? 154 whp is 6-20 whp down on the average H22 dyno with a few mods. Try to get some more information on what type of dyno you are using. It might not be calibrated right, since you said other dynos were 20-30 hp down from the norm.</TD></TR></TABLE>

it was torque curve 200Nm is ca. 147ft-lbs

 

OK. If that's the case, your torque is good. The whp is down a bit, but it's probably either the dyno you're using or a tuning / fuel grade issue. You're not far off from the norm.

 

You're hitting peak HP at 6000rpms....that's like 1000 rpms off of where it should be your peak torque is also too early...something is screwy here

 

also looks like your vtec is engaging at 4500, if i can see it correctly. but you did not list any kind of vtec controller. but you did at least peak at 200, which is not bad.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by limpmode &raquo;</TD></TR><TR><TD CLASS="quote">also looks like your vtec is engaging at 4500, if i can see it correctly. but you did not list any kind of vtec controller. but you did at least peak at 200, which is not bad. </TD></TR></TABLE>

hmm you're right it appears that the entire graph is off 500-700 rpms....makes me wonder how accurate the readings are...

and running your secondaries open all the time is making you lose lots of low end power....plug them back in and run them

With a highflow cat and exhaust it's surprising that the power is dropping so quickly...your stock header is really holding you back.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">hmm you're right it appears that the entire graph is off 500-700 rpms....makes me wonder how accurate the readings are...

and running your secondaries open all the time is making you lose lots of low end power....plug them back in and run them

With a highflow cat and exhaust it's surprising that the power is dropping so quickly...your stock header is really holding you back.</TD></TR></TABLE>

I don't have any vtec controller installed yet. And I'm sure VTEC kicks at 5100-5200. That's right I don't hit vtec so low. Something must be wrong with the graph.

IABs... they're open because I can't make them running Something must be wrong with the switch or so... But I'm working on it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pentaq &raquo;</TD></TR><TR><TD CLASS="quote">

I have started another topic covering this issue. You may look at https://honda-tech.com/zerothread?id=887501 </TD></TR></TABLE>

So it's running pig rich on the top end? That could explain alot.

Also, just curious...where did they put the dyno's rpm signal pickup? Which spark plug wire?

BTW, did a little research on the type of dyno you're running on (which all seems to point to an eddy current type dynamometer) So considering the average "Mustang" dyno pulls typically 5-10% lower numbers than a Dynojet...you're just about average with most stock H22's. But definitely get an AFC or similar to help tune out that top end.

 

Maybe the rpm intervals are off on the graph. As in every 500rpm interval on the graph is actually 700-800 or something, that could explain the power droping off so soon. I don't know why it would read so low though - Maybe its a mustang dyno? But I heard stock H22s dyno even lower on a mustang dyno. Since you live near the German border maybe you can go there to use a dynojet or something.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Finest &raquo;</TD></TR><TR><TD CLASS="quote">So it's running pig rich on the top end? That could explain alot. </TD></TR></TABLE>

Yep, terribly rich. The only results are clouds of black smoke stinking like fuel at the top end.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Finest &raquo;</TD></TR><TR><TD CLASS="quote">
Also, just curious...where did they put the dyno's rpm signal pickup? Which spark plug wire?
</TD></TR></TABLE>

They didn't at all I didn't even know they should

I'm going to visit another dyno that has been just opened in my town and compare results. It's not dynojet but I'll try.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pentaq &raquo;</TD></TR><TR><TD CLASS="quote">They didn't at all I didn't even know they should

</TD></TR></TABLE>

That may explain why your rpms are off 500 or so. They probably just calculated your rpms by other means, like speed over time in relation to your transmission's gear ratio (which would explain why they had to test your gears in 4th at 2000rpms).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CHK4TIX &raquo;</TD></TR><TR><TD CLASS="quote">

From what i can see, thats not to bad for basicly a stock motor</TD></TR></TABLE>

 

yep looks liek the graphs are 500rpm off or so, so every looks about right, with a tq peak of 5500ish, and hp peak of 6500ish, the hp is kinda low, but not that far off, the norm is about 6700-6800

but honestly those dyno numbers dont mean much, there are lots of factors that can affect the numbers, like the corrections they use for air temperature or humidity, etc. so eventhough they are a bit low, its nothing that you should worry about.