168.9 fwhp in 4th @ 6850 rpms

[Outlaw4Shrt]

I went by David Brown Motorsports today in Charlotte, NC to get my car tuned with their wide band o2 sensor. My car had been running really rich as of late and my car wasn't making the kind of power I expected it to. Turns out my car was running REALLY rich and it was killing my power. On my initial run the car made 157 fwhp @ 6800 rpms and 140 ft-lbs of torque @ 5700 rpms in 4th. Needless to say I was really disappointed until I looked at the air/fuel ratio graph where from 6200 rpms on the a/f ratio was all the way down to 12.5 to 1. After 10 runs with the car running hot we were able to adjust the fuel up to a nice 13.8 past 6300 rpms. On my final run I made 168.9 fwhp @ 6850 rpms and 148.2 ft-lbs. of torque @ 5800 rpms. I was using a APEX Super AFC-II for tuning.

I'm not positive, and I didn't even think about it until after I left, but aren't most dyno runs done in 3rd gear? Doesn't really matter though, I just really wanted to get my car running to a level where I thought it should be. Gaining about 12 fwhp and 8 ft-lbs of torque in an hour for $75.00 was awesome.

I know my car can break that 170 fwhp mark. A big reason I think so is the fact that there was no cool air fan for the motor which I think could have made a big difference had the engine been sucking in the cool air it normally would be at 110 mph. Also, the car was running hot the whole time as we didn't shut the motor off after each run and after 10 runs I think that heat could have made a big difference.

All in all though I am really happy. With the typical 18% drivetrain loss normally experienced for cougars, that 168.9 fwhp translates into about 199.3 crank horsepower and with 22% overall loss, which David Brown said is what he has found to be the average loss for his dyno, the car could have made up to 206 crank hp. Not bad, not bad at all I reckon.

Here's a list of my mods so you know what I was working with and some pictures of the dyno graphs. Any feed back or input on this would be greatly appreciated. Thanks,

Adrian

MODS LIST (as of 3/2/04)

- SVT Cams, 19lbs injectors, UIM, LIM, and optimized Throttle Body
- Yellow Top High Cycle Battery
- Magnecor Hi-Performance Ignition Wires
- Weapon R Intake
- Weapon R Headers
- Custom 3" cat-back single to split dual exhaust
- Ravin Z-55 series mufflers
- Midas series 3" glasspack resonator
- Catco high-flow cat
- Street Flight custom burned chip
- A'PEXi S-AFC II for fine tuning
- SPEC flywheel and stage II clutch
- Torsen diff.

http://www.fastcougar.com/forums/attachments/final%20run.JPG

http://www.fastcougar.com/forums/attachments/first%20and%20last%20run.JPG

http://www.fastcougar.com/forums/attachments/low%20part%20and%20full%20throttle%20air%20fuel%20 graph.JPG

http://www.fastcougar.com/forums/attachments/final%20run%20big.JPG

http://www.fastcougar.com/forums/attachments/first%20and%20last%20run%20big.JPG

[Nemesis]

Nice numbers bro! I LOVE the AFC. Its such an excellent tool to tune with. Did the guy mention to record on paper what he set your setttings to? Just in case that little mishap happens. Im just a little curious as to why your torque seems so low?

[Outlaw4Shrt]

Thanks man! I'm pretty excited about them. It's nice to know that my car is finally making some decent power. I definitely recorded my settings in case something were to happen. I'm not sure why my torque numbers are so low, I think they might have been different if we had made the runs in 3rd or second gear but who knows. Regardless though, how do you like the torque graph? I think those SVT cams really make a big difference in power delivery. Look how flat the torque curve is from 4000 to almost 6000 rpms. I was really excited to see that, both hp and trque graphs are really smooth. I think there might even be a horse or two up there still if I had my rev limiter raised past 7000 rpms because the engine was slammin in to the rev limiter hard core on the dyno. Who knows, but looking at that dyno is making me really want to send in my street flight chip back to get that rev limiter raised up at least 200 rpms, possibly even 400.

[Nemesis]

Quick question. You had mentioned you were running extremely rich. I was having the same problem throughout the RPM band. How many points did he lean it out throughout? Mine was taken down 14 points.

[Outlaw4Shrt]

From 5200 to 5700 we lowered it 5 points, from 5700 to 6000 rpms we made a gradual slope from 5 to 10 points, and from 6000 to 7000 we kept an even 10 point drop. I'm sure there might be room to adjust up or down a little bit to squeak out another hp or two, but I was happy with the results I have. When I go in with you sometime to get my nitrous tuned, I'll see what I can do about getting more power out of that S-AFC adjustment.

[Outlaw4Shrt]

correction, from 2800 to 5700 we lowered it 5 points

[pgtatx]

That's kinda low in my eyes...

I dynoed at 172.9 hp in my cougar in 4th...

I know you are at 6850, which is nice, and I was around 6500 RPM, so that's the only difference, but my power didn't drop off completely at the redline.

I still had my stock exhaust manifolds on there and I have a 99 with the smaller lower IM. Plus my plugs and wires were shot, but then after that we have like the same mods.

So you got more mods than I do, and dynoed lower. That's interesting.

I'm not bragging, but I;d figure you'd get more that 168whp. My car has always been a bit of a freak, so hopefully that's all it is, but I think you have more power hidden in there...

Oh well...good luck.

[GrandMasterKhan]

not bad man,

Did that $75 include the wideband 02 sensor?

I would like to take my car down there soon do get my car dyno tuned. I hope to nail similar numbers as you...though I do believe you definitly have room for improvement.

I do like how your curve pulls all the way to redline. :biggrin:

[Madcat]

Price is sweet. Id deffinetly be willing to pay that. But I also would say those numbers are low, unless its an ATX or something?? With the mods you have, some being pretty significant, I would surely think if its an MTX you would easily have gotten better numbers?? :stupid: I could always be wrong.

[Outlaw4Shrt]

I don't know guys, I don't think it's that bad. It's a start anyway. I need to send my chip to street flight for a re-burn that's for sure. I need a front end alignment and camber kit which I'm sure could make a big difference as well. Ideally from this set-up I would hope for at least 175 fwhp which I think is definitely within my reach with more tuning and better conditions and who knows what else is possible. Every day and dyno is different. Regardless, I'm happy with what I have so far, the cars fun to drive, and holds it's own on the street especially now that I've taken my system out.

A

[Outlaw4Shrt]

Originally posted by: GrandMasterKhan
not bad man,

Did that $75 include the wideband 02 sensor?

Yea, that $75.00 included the wideband o2 sensor. I didn't have to install a bung, he just threw a sensor down my tail pipe and I was good to go.

[weargle]

You use fourth gear because that gear ration is closest to 1:1 (in my CSVT it's 1.03:1). This gives the most accurate and appropriate information. Using other gears would be "cheating".

[FastCougar]

Originally posted by: weargle
You use fourth gear because that gear ration is closest to 1:1 (in my CSVT it's 1.03:1). This gives the most accurate and appropriate information. Using other gears would be "cheating".As long as you know the gear's ratio, the numbers on the dyno graph can be calculated/scaled appropriately.

[MeccaManx2]

good job outlaw! cant wait for my dyno and tune and then we can compare.

maybe you need to clean ur valves?

dyno's are usualy done in 4th, people say they got the most power on a dyno from 4th too.

maybe sf can do a lil more timing tweaks and you might be able to get more midrange power and the raised limiter will help too.

i cant make it to a dyno until the beginning of may but ill be goin to the track next week. best time before the svt heads/cams/exhaust mods

2.4 60 ft (i know this is sad but i think i can get it lower now)
15.5@92mph

[GrandMasterKhan]

Hey next time you roll down there hit me up. My coog needs tuning BAD! I'll most likely be using the MAFterburner for tuning, could you hit me up with that shops number so I can give them a ring and see if they are familar with the MAFterburner?

I had 155fwhp 150fwtq on the lowballing CougarFest dyno :tongue: Other members have redynoed since then and had up to 8-10hp more! So :shrug:

We'll also get your GMK CAI installed and see how that helps out your numbers ;) I am sure some timing advance would help you quite a bit. Especially with your svt shizz.

Don't Cougars have the same gearing as the SVTContour? Perhaps on the redyno we could could input the correct gear ratio and that may show a more accurate WHP reading (more hopefully hehe)

[Outlaw4Shrt]

I planed on heading down there sometime after getting my Venom kit installed and my chip reburned from street flight. I've found a place that will do the nitrous install for under $200, but their in Georgia:( Probably before the end of the month I can head down there. Here's the webpage for DBM (http://www.dynotestservices.com/).

A

[GrandMasterKhan]

My body shop should be able to get that Venom Kit installed for you. He's located in Columbia SC. I'll be heading down there next week to pick up the 19s to ship off. Perhaps we could meet up and you could check out the body shop and talk with Richard (the owner)

[weargle]

Originally posted by: FastCougar

Originally posted by: weargle
You use fourth gear because that gear ration is closest to 1:1 (in my CSVT it's 1.03:1). This gives the most accurate and appropriate information. Using other gears would be "cheating".As long as you know the gear's ratio, the numbers on the dyno graph can be calculated/scaled appropriately.


I don't doubt that at all. But wouldn't the selection of a higher gear slow down the acceleration of the brake (the heavy cylinder in the floor) enough so that you get more data points?

[SkunkPa]

I think your problem with torque could have alot of to do with your 3" exhaust that is rediculously large for not running any type of forced induction...you should step it down to a 2.5 or something