STOCK Baseline Power: 144.8 wHP and 109.2 lbs. of Torque
(Don't have graph)


Here's my OLD Dyno before the Skunk2 Intake Manifold, Tanabe Super Hyper Medalion exhaust and ITR AEM CAI. Broken fan on a 98 degree day.

Power: 158.6 wHP and 111.4 lbs. of Torque



Here's my Dyno that I got today:



Power: 171.2wHP and 116.4 lbs. of Torque


Some info:

I drove 2 hours right before we Dyno tuned my car, so the car was HOT. Lawrence at DSR burned his fingers twice trying to tune my car so we only ran the car about 4-5 times max. He said if the car was cooler, I would've pulled better numbers.

Also, he said he went up to 8400rpms according to the Tach, but on the Dyno, it showed that it wouldn't go passed 7800rpm (Due to OBD2 Fuel Cut-off).

I was running on STOCK Valvetrain, STOCK Cat. Converter, STOCK Throttle Body and STOCK OBD2 Ecu. (Stock ECU held back alot of power).

We saw that the car wanted to make more power passed the redline, so I'll be getting a valvetrain upgrade along with a higher redline in the future.


Also, if you notice the Red curve, there was a huge dip before Vtec. Lawrence fixed that right up with a little bit of VAFC tuning.

Overall, the tuning was succesfully done. We gained a good amount throughout the WHOLE rpm band. Both low end and high end, and the Vtec Dip disappeared.


Conclusion: Skunk2 Stage 1 cams, Skunk2 Cam gears, Skunk2 Intake Manifold, AEM CAI, Tanabe Super Hyper Medalion Exhaust, USDM DC 4-1 header, VAFC, and a B&M fpr got me a total of: 26.4wHP and 7.2 lbs. of Torque Gain.





Modified by Skunk2nR at 1:37 PM 4/11/2003

 

Damn! Nice numbers Jun!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PhAtBoY Si &raquo;</TD></TR><TR><TD CLASS="quote">Damn! Nice numbers Jun! </TD></TR></TABLE>

Thanks bro...

With a Skunk2 chipped p28 ecu, Skunk2 valvetrain and a Carsound cat., I'll be expecting those numbers to jump.

 

dam, i would ahve thought you would have gotten a little more out of that. . .i think that ecu is holding back alot.

 

Your new setup really sacrifices that low- and mid-range for high-end doesn't it?

Ben

 

Nice #'s

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mr_mbuna &raquo;</TD></TR><TR><TD CLASS="quote">Your new setup really sacrifices that low- and mid-range for high-end doesn't it?

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

Not really. It feels ok bottom and midrange now. It's doesn't pull like crazy obviously, but I think it feels the same as when I had the stock Cams.

Top end DEFINATELY pulls ALOT harder tho.

 

You would really benefit from a higher redline. I'm assuming that you will be using the S2 valvetrain?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FrostyDC4 &raquo;</TD></TR><TR><TD CLASS="quote">You would really benefit from a higher redline. I'm assuming that you will be using the S2 valvetrain?</TD></TR></TABLE>

Yeap. When I do upgrade my valvetrain, I'll be buying Skunk2 products.

 

Great post. Thanks for the blow by blow...too often people compare apples and oranges...i should be doing one of these writeups of my own soon.

 

nice gain u have there. btw, where did you set ur cam gears to and ur fuel pressure?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">and STOCK OBD2 Ecu. (Stock ECU held back alot of power). </TD></TR></TABLE>

How do you figure the ECU held back power when you can change the a/f ratios, x-over point, and timing with the v-afc?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AllMotorBeast &raquo;</TD></TR><TR><TD CLASS="quote">nice gain u have there. btw, where did you set ur cam gears to and ur fuel pressure?</TD></TR></TABLE>


Fuel Pressure: 48 psi
Vtec X-over at: 5700rpm
Cam gear settings: I forgot to ask him. I have no idea. My Cam gears are covered up.

 

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

How do you figure the ECU held back power when you can change the a/f ratios, x-over point, and timing with the v-afc?</TD></TR></TABLE>

You're kidding right? VAFC can only do so much. ECU's can make a huge difference. Especially goin OBD2 to OBD1.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Skunk2nR &raquo;</TD></TR><TR><TD CLASS="quote">

Thanks bro...

With a Skunk2 chipped p28 ecu, Skunk2 valvetrain and a Carsound cat., I'll be expecting those numbers to jump. </TD></TR></TABLE>

Without question man. Good numbers, and Good Luck.

 

oh yea... and another thing.

This was done using a Dynojet... not one of those Dyno's that are off and shows more power (Like those Mustang Dyno's).

 

very nice

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FrostyDC4 &raquo;</TD></TR><TR><TD CLASS="quote">You would really benefit from a higher redline.</TD></TR></TABLE>

Sure does look like it. The curves were shooting straight up at 8K. A higher redline, better cat, and ECU and your be in the 180s for sure. Good numbers man

 

good numbers.
high redline is a-ok

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Skunk2nR &raquo;</TD></TR><TR><TD CLASS="quote">

You're kidding right? VAFC can only do so much. ECU's can make a huge difference. Especially goin OBD2 to OBD1.</TD></TR></TABLE>

Ok first there NEVER has been any proof that OBD2 vs OBD1 has made any difference. Super Street did an article a long time ago where they put a DC 4-2-1 header on a OBD1 car and an OBD2 car and then went nuts when the performance gains were different.

What they DIDN'T mention is that EVERY ENGINE IS DIFFERENT. As such each engine dynos different stock, and each engine responds differently to mods. This is why in order to get the best results you have to tune each engine individually, and why off the shelf ECU reprograms offer poor gains (if any).

So tell me, if you can adjust the timing, a/f, and x-over point, what does switching the ECU change in terms of performance?

 

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

Ok first there NEVER has been any proof that OBD2 vs OBD1 has made any difference. Super Street did an article a long time ago where they put a DC 4-2-1 header on a OBD1 car and an OBD2 car and then went nuts when the performance gains were different.

What they DIDN'T mention is that EVERY ENGINE IS DIFFERENT. As such each engine dynos different stock, and each engine responds differently to mods. This is why in order to get the best results you have to tune each engine individually, and why off the shelf ECU reprograms offer poor gains (if any).

So tell me, if you can adjust the timing, a/f, and x-over point, what does switching the ECU change in terms of performance?</TD></TR></TABLE>


OBD1 vs OBD2 does matter when you have a significant amount of mods. OBD2 is alot more stricter than OBD1. I'm not just talkin about OBD1 vs. OBD2....

I'm talkin about different ECU's and CHIPPED ecu's. Trust me they're different. Example... I'm still running my STOCK ecu with the Dual stage runner design. I have a Skunk2 IM with the single stage runner design, so that would affect performance as well. VAFC can only go up or down 5%, whereas the chip on the ECU can vary much more than that.

If you want more details, ask in the Tech forum. If ecu's didn't do anything, why would alot of people switch them out and convert to OBD1?? It's not like everyone has $300.00 laying around for an ECU swap.


Oh, and here's a Dyno of stock P72 OBD2 ECU vs. Skunk2 OBD1 ECU conversion:

 

Ok first an untuned ECU vs Skunk2's retuned ecu is rediculess to use as OBD1 vs OBD2.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Skunk2nR &raquo;</TD></TR><TR><TD CLASS="quote">
OBD1 vs OBD2 does matter when you have a significant amount of mods. OBD2 is alot more stricter than OBD1. I'm not just talkin about OBD1 vs. OBD2....
</TD></TR></TABLE>

Stricter in terms of what? If not A/F, Timming or X-over? then what does it do that reduces performance?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">
I'm talkin about different ECU's and CHIPPED ecu's. Trust me they're different. Example... I'm still running my STOCK ecu with the Dual stage runner design. I have a Skunk2 IM with the single stage runner design, so that would affect performance as well. VAFC can only go up or down 5%, whereas the chip on the ECU can vary much more than that.
</TD></TR></TABLE>

Which is why you use a FPR to increase the fuel, and lean out where necissary. Which is using proper tuning tools to increase performance, it has nothing to do with not having OBDI.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">
If ecu's didn't do anything, why would alot of people switch them out and convert to OBD1?? It's not like everyone has $300.00 laying around for an ECU swap.
</TD></TR></TABLE>

Some for misinformation, some because you can't chip an OBD2 ECU. But again that has nothing to do with OBD2 being more restrictive, its about going stand alone vs piggy back.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Skunk2nR &raquo;</TD></TR><TR><TD CLASS="quote">


OBD1 vs OBD2 does matter when you have a significant amount of mods. OBD2 is alot more stricter than OBD1. I'm not just talkin about OBD1 vs. OBD2....

I'm talkin about different ECU's and CHIPPED ecu's. Trust me they're different. Example... I'm still running my STOCK ecu with the Dual stage runner design. I have a Skunk2 IM with the single stage runner design, so that would affect performance as well. VAFC can only go up or down 5%, whereas the chip on the ECU can vary much more than that.

If you want more details, ask in the Tech forum. If ecu's didn't do anything, why would alot of people switch them out and convert to OBD1?? It's not like everyone has $300.00 laying around for an ECU swap.


Oh, and here's a Dyno of stock P72 OBD2 ECU vs. Skunk2 OBD1 ECU conversion:

</TD></TR></TABLE> why do people spend 300 to make the conversion? cheap bandaid so they can run w/ a chipped ecu(skunk mugen etc)like that until they get a real tuneable ems. there is really not that much difference a ecu can make AS YOU THINK ,because as styleteg said, since you are already tuning fuel , timing, vtec x-over, and cam gear settings. lol , where did you get that skunk2 vs. stock ecu comparison? from a place that sells the skunk2 program correct? don't believe everything you hear.

 

Very impressive

 

also i thought u made 162 or 161 whp last time...not 158?