I just wanted to head to the dyno and make a few changes to my part throttle maps, vtec MAP activation, and some other minor changes...so while I was there I decided to get a few full throttle runs in...

Thanks to Lawrence at DynoSpot Racing for his time and assistance.

SMOOTHING WAS SET TO 1 just to show you how smooth the plot is. I had to give it to you in MPH because we were having trouble with the RPM signal.



full size edition, cut and paste into your browser window:
http://www.imagestation.com/pi...g.jpg


Here is the RPM plot...as you can see it's hard to read



full size, cut and paste into your browser:
http://www.imagestation.com/pi...g.jpg


So...anyone know what gearing I was running?
Anyone know where VTEC is at?

Both of those questions are trick questions, and if you know them it's because I've told you what they were


Car has 56,000 miles as of the drive home from the drive home from the dyno.


Parts Installed:
Comptech icebox and intake
Mugen headgasket
Hondata intake manifold gasket, street setup
Hondata S200
HyTech header and exhaust, test pipe
toda cam gears +5, +5
Prelude '97+ 290cc/min injectors


Have a good day

Austin


Modified by Austin at 1:02 PM 6/16/2003

 

Am I reading that chart right? You made 189 whp without any aftermarket cams?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AllmotorJunkie &raquo;</TD></TR><TR><TD CLASS="quote">Am I reading that chart right? You made 189 whp without any aftermarket cams? </TD></TR></TABLE>

right you are...still need to get a graph from one of the other local dyno shops that have higher readings so that I can claim higher numbers

 

VTEC was set at 3500.

 

Nice number dude! I am impressed.

 

Nice and smooth.
Got pics of new hpc coat on the header?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris N &raquo;</TD></TR><TR><TD CLASS="quote">VTEC was set at 3500.</TD></TR></TABLE>

How can you tell the chart is in speed not rpms. Hard to guess based on that . . .but I woudl say Chris is close.

 

That is awesome...very nice plot.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Austin &raquo;</TD></TR><TR><TD CLASS="quote">
Parts Installed:
Comptech icebox and intake
Mugen headgasket
Hondata intake manifold gasket, street setup
Hondata S200
HyTech header and exhaust, test pipe
toda cam gears +5, +5
Prelude '97+ 290cc/min injectors

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

I am very close to this same parts list and am curious on your cam gear settings. I have done little with mine as I never seem to change anything or make power. Why is your exhaust gear advanced? Isn't it normally retarded not advanced? Is any of your gear setting to compensate for the thinner head gasket?

 

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

How can you tell the chart is in speed not rpms. Hard to guess based on that . . .but I woudl say Chris is close.</TD></TR></TABLE>

I'm guessing that low because of George's similar-looking whp graph.

 

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

I am very close to this same parts list and am curious on your cam gear settings. I have done little with mine as I never seem to change anything or make power. Why is your exhaust gear advanced? Isn't it normally retarded not advanced? Is any of your gear setting to compensate for the thinner head gasket?

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

When I tuned the setup last September and October we tuned it all for the daily driven/mid range power/autocross, we advanced the exhaust gear and gained midrange power, without the loss of <u>any</u> top end power, surprised all of us. The net settings for the cam gears would be +3.5, +3.5 to compensate for the Mugen head gasket. The cam gears were good for a couple here and there across the entire rpm band.

Austin

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Austin &raquo;</TD></TR><TR><TD CLASS="quote">I just wanted to head to the dyno and make a few changes to my part throttle maps, vtec MAP activation, and some other minor changes...so while I was there I decided to get a few full throttle runs in...

So...anyone know what gearing I was running?
Anyone know where VTEC is at?</TD></TR></TABLE>

Looks good Austin...but why did you dyno in 4th gear? Was there some reason other than the fact that it reads higher? How does this plot compare to your baseline?

The answer to your first question is stock gearing with JDM final drive, 4th gear pull. I don't have an answer to the second question, but my guess is 4200.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Parts Installed:
Comptech icebox and intake
Mugen headgasket
Hondata intake manifold gasket, street setup
Hondata S200
HyTech header and exhaust, test pipe
toda cam gears +5, +5
Prelude '97+ 290cc/min injectors</TD></TR></TABLE>

You forgot the Comptech flyhweel. Aren't you running some internals as well? I thought you had valvesprings and Ti retainers? What about spark plugs...using stockers? Also, if you are still using 5w-30 Mobil 1 synthetic, that may be worth mentioning as well...although I don't know what you were using at the time your car was baselined. Looks great...now show us the delta charts!

 

does DynoSpot have a brake dyno to allow you to do partial throttle tuning?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Michael Delaney &raquo;</TD></TR><TR><TD CLASS="quote">does DynoSpot have a brake dyno to allow you to do partial throttle tuning?</TD></TR></TABLE>

nope, they dont have that version of the dyno jet

I think austin is using some redline 10-w30 synthetic oil I sold to him.

Im pretty sure he is running portflow cryo retainers, along with portflow inners, and stock itr outers.

 

Yes, I'm running Portflow Ti retainers, stock itr springs, Comptech flywheel, redline 10w30(switching back to Mobil 1, it's cheaper), stock spark plugs. Ran the car in 4th gear to get a higher load on the engine(plots were almost identicle between 3rd and 4th gear, just got better resolution on the A/F), besides it would redline way too quickly...you don't have the gearing right, I ran something slightly different for the dyno runs.

George...yep, I prefer HyTech, whereas you prefer SMS...I don't have a cat(but I'm waiting on one, didn't make much difference last time I tested), but you have a ported head....it just shows what happens when you have all of your parts working in harmony with each other.

Austin

 

Looks Great Austin

 

good stuff Austin

 

Cool deal Austin. I'm similar as well with my HyTech setup but 2-3whp lower over most of the powerband since it seems you had much better tuning. I wasn't too happy with my tuning (they didn't even do an A/F reading and did almost nothing with the cam gears) so I'll see what happens when I go back to dyno at a different place.

You planning on taking another step further anytime soon or is this pretty much it for your motor? I'd like to bump it up to 200whp and wondering if something mild like the Toda A would be able to push it over the edge.

 

dam how many times do you dyno...

once every month..

 

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

You might want to think about it at some point.

According to the shop, I had "a casting shift" that affected flow to the tune of 12%. They were able to improve on that substantially.

I have no idea what a casting shift is, but if you think about it and extrapolate, fixing that is probably responsible for a couple of horses.</TD></TR></TABLE>

Casting shift...I know what it is, partially...and it happens, for all we know half of us running around could have it . To overly simplify it, it means that the head isn't formed the way that it's supposed to be, and the ports are slightly different from what they were supposed to be.

Dyno time...it's been 6 months since I did the last dyno day and ~12,000 hard miles, it's good to recheck things periodically, it might show you that something is slightly off.

Austin

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bob-DC2 &raquo;</TD></TR><TR><TD CLASS="quote">

nope, they dont have that version of the dyno jet

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

forgive my ignorance but how does one do actual part throttle fuel tuning without a brake dyno to fix the rpm point? I'm more used to the motorcycle guys approach to doing this on a Superflow.

 

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

forgive my ignorance but how does one do actual part throttle fuel tuning without a brake dyno to fix the rpm point? I'm more used to the motorcycle guys approach to doing this on a Superflow.

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

I knew where I was running extremely rich, so we put it on the dyno with the WBO2 sensor plugged in, drove the car on the dyno under varying loads and looked at the datalogging to see where in the fuel maps I was, it's not an exact science, but it looked like the tuner knew what he was doing, and fixed where I was running rich.

Austin

 

austin, did you check to see if you were losing fuel pressure on the top end with the 290s and stock pump ?

surprise she only peaks around the 8k range, and you tried more overlap and she didnt like ? these are stock 01 ITR cams, right ?

greg

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CHEETAH &raquo;</TD></TR><TR><TD CLASS="quote">austin, did you check to see if you were losing fuel pressure on the top end with the 290s and stock pump ?</TD></TR></TABLE>
It's on the list to purchase an electronic guage so that I can see it while driving, but it's a long list...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">surprise she only peaks around the 8k range, and you tried more overlap and she didnt like ? these are stock 01 ITR cams, right ?

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

We tried more overlap and it didn't like it, not sure why...and yep, they're my stock '01 cams. We think that I'm getting so much oil through the PCV system and the valve cover vent, as evident from all of the oil in those lines, that it's causing me to lose some power, need to install a decent catch can. Other local DynoJets will read 3-5whp higher than this one, but it wont change the shape of the curve...

I'm happy, would like 200whp, but oh well. Here is a plot that shows the torque curve in greater detail.



full size, cut and paste:
http://www.imagestation.com/pi...g.jpg

Austin

 

nice #'s , im defently considering hytech header .All with in time