Dyno numbers for an 03 SO

[Goodys1ton]

I finally made it to the local dyno to see what I have gained with my last modifications and thanks to John Porterfield being there I found I had another thing to deal with, defueling!!!. I had no idae what defueling was, I always thought it was my truck shifting gears, but I was actually defueling. I found this out by taking a ride in John's 24v. I wish I would have found this out sooner so I coulD have bought and installed the anti- defueling device. Oh well I guess that is how you learn.



Dec 4th of 2004 I had 278hp/493 tq, this was before the transmission work and the Super "B" turbo. All I had was the Ez box on 4. The new numbers are with the TST as well as other mods mentioned above:



1. EZ 4 TST 0/0 288hp 544tq

2. EZ 4 TST 5/5 409hp 812tq

3. EZ 4 TST 7/7 423hp 816tq (Boost hit 44psi, then dropped)

4. EZ 4 TST 8/6 363hp 774tq ( and a whole lot of smoke )



I think once I get the defueling taken care of I should be able to bring the torque up a little.

The exhaust temps did not reach 1300 during the runs. The Super B did it's job and it wasn't as costly as others. BD and Kyle at Extreme Diesel helped me work out the installation and both offer great customer support. Again a great deal.

 

[John_P]

Tom:



Thanks for the invitation to come and watch you re-dyno with your

new parts! Congratulations on the great numbers you put down!!

A gain of 145 H. P. is excellent and I am happy for you. You need

twins now!



--------

John_P

 

[driverno8]

My SO's going on the dyno on Sat. I'm adding an EZ to my TST so I should be where you're at. Only difference is the fueling issue. I added an AirDog a few months ago

 

[Goodys1ton]

John,

Twins? I need to get the defuleing taken care of first. I just talked to Kyle at Extreme Diesel and he may be able to help . I just have to talk with the wife. I just can't wait to hear "the truck runs fine, why do you need (fill in the blank)" Actually it isn't that bad, she knows its my hobby, plus I need to hang with the Porterfields. I can't stand sucking all the soot.



driverno8

be sure to post your results, which I am sure you will. Its just I haven't seen to many SO's and results. FYI I found anything higher than 8 I was just blowing smoke.

 

[SRadke]

Can you elaborate on this defueling thing you're seeing a bit more for us. I've got a serious hickup around 2200 rpm that gets worse as the power levels go up. Thinking it's a SO program anomaly.



-Scott

 

[Tomeygun]

My SO's going on the dyno on Sat. I'm adding an EZ to my TST so I should be where you're at. Only difference is the fueling issue. I added an AirDog a few months ago

I cant wait to see yours... With the cam and turbo and all



I think everyone will see that the SO's are the real HP makers... And the temps are low for the power



Sradke - 503+ hp

Tomeygun - 437hp

Goodys1ton - 423hp

And you KNOW DriverNo8 will be close to 500hp (with the turbo and stacked)



And all with just boxes and a turbo



(and you can keep your fancy "600's" with that goofy retarded timing :-laf )



WE ARE "Standard Outputs", HEAR US ROAR!!!!!!! hahahaha

 

[SRadke]

Geeze Tom, are we back in middle school now "Hear us roar" lol.

 

[qzilla]

I used to have a pretty nasty SO as well. I sort of miss that thing. It sure sounded good with 2 big huffers!

 

[Goodys1ton]

SRadke

I am sure there are others that can explain it better, the defueling that is. But from what I see and notice. The Torque management system on the automatics protect us from doing some severe damage to the motors and the drivetrains. Once certain limits are met a signal is sent to the ECM saying "stop fueling, I have all the fuel I need" then it drops off. Then after the limits are back in check, fueling begins. It has nothing to do with the amount of fule you have coming to the ingector pump, I can't get mine to drop less then 18 PSI. I am sure that this defueling is not good for the vehicle with the sudden slowing down of everything in the drive train.



Before I started the "bombing" I would feel the truck die off when under heavy acceleration. I thoguht that the transmission was just making a long hard shift. After taking a ride in John Porterfield's truck he explained and showed me what defueling was. I have had this problem from day one and with the RAD device I hope to end it.

 

[GWoody]

This defueling thing, I have never felt it in my truck, is this specific to certain series of engines???

 

[SRadke]

That sounds very similar to what I (and a couple others I've spoken to) are seeing. The engine just cuts fuel all of the sudden then gives it back. It's not just an automatic transmission thing either, mine's a stick. Notive the 2200 rpm glitch in the two red lines of the attacehd graph. it becomes very relavant on the higher box settings.



-Scott



P. S. Sorry I had to rotate it to make it fit

 

[driverno8]

Believe me I'll post the number immedietly. Last time she was on the dyno, right after the rebuild, I did 300/700. But that was without the AirDog, Turbo or EZ. Plus I was spinning my tires. (35" BF MudTerrains). So this round with all the new goodies, plus stock tires it should be up there some more. Here's the down side. I'm going with my Dodge Truck club (25 of us going) and just found out the place won't be able to give me tq. numbers. So I'm not going. They're working on it right now, but I beleive it's a programming error. Really no point of putting it on the dyno if I can't see both numbers. I'll let you guys know.

 

[SRadke]

Since horsepower is calculated from torque I don't see how you could get it without having a torque number. I suppose you would know the amount of power going into the dyno and if you know the approx rpm of the drum you could go backwards through your tire size and gear ratios and get close but what a hassel. All it takes is an electronic pickup on your balancer to get a rpm reading.



-Scott

 

[Goodys1ton]

SRadke

On my dyno runs, I didn't have a problem with the lower RPM's defueling, the problem I had is my truck would drop before 3000 RPM's. I need to do some research and call TST to find out at what RPM's the TST is set to defuel. Maybe tonight I will have some time to download my dyno run to show. It is like hitting a wall and every run.



But the smoke was awesome!!!!!!!

 

[Tomeygun]

Since horsepower is calculated from torque I don't see how you could get it without having a torque number. I suppose you would know the amount of power going into the dyno and if you know the approx rpm of the drum you could go backwards through your tire size and gear ratios and get close but what a hassel. All it takes is an electronic pickup on your balancer to get a rpm reading.



-Scott

Even easier on a 3rd gen... I used a RPM pickup on the pink wire on the first injector banks's harness



Alot easier than the optical pick-up with that shinny tape on the balancer

 

[driverno8]

Got the EZ on yesterday. Holly ****! She screams. I'm still getting hot (1400) with it on 7/7 & EZ on 4 but it's quick. Couldn't hold it for a 1/4mile. TST on 6/8 seems really fun. I thought this thing would be pooring smoke. It actually cleared it up a lot when I added the EZ. It smokes longer when I'm on it, but it's not black & think like just the TST at 6/8. Dyno on Sat is good to go. The girl up front didn't know what she's talking about. I'm looking forward to it. Let you guys know the numbers. I'm going to try a bunch of things. Just the TST on 9/9 and 7/7 plus EZ 2/TST 4/4 (towing), etc. I want to see where I'm at in the real world, not just cranked up for a single run.

 

[SRadke]

You'll probably see higher numbers with the EZ on 1 or 2 than you will on 4. EZ on 4 really taps the CP3 for all it'll pump.



-Scott

 

[driverno8]

Got her done today. Well kinda. The truck was shifting so hard with the TQ that the little sensor thing you mentioned wasn't picking the rpm's up. The best we could do was 405hp and 722tq. (EZ 4 & TST 7/7) I know the tq is way off. I dynoed that with the stock turbo, no airdog and no ez. You could tell by looking at the chart too. The entire power curve was missing on the print out. When it started to read it, it was on it's way down. There's no doubt it would have been high 8 or low 9's just looking at where the line should have been. I want to try a few other places, everyone else doesn't have this sensor problem, not sure why this guy did? Oh yea, it was a DynoJet

 

[Tomeygun]

Got her done today. Well kinda. The truck was shifting so hard with the TQ that the little sensor thing you mentioned wasn't picking the rpm's up. The best we could do was 405hp and 722tq. (EZ 4 & TST 7/7) I know the tq is way off. I dynoed that with the stock turbo, no airdog and no ez. You could tell by looking at the chart too. The entire power curve was missing on the print out. When it started to read it, it was on it's way down. There's no doubt it would have been high 8 or low 9's just looking at where the line should have been. I want to try a few other places, everyone else doesn't have this sensor problem, not sure why this guy did? Oh yea, it was a DynoJet

If they have an electronic pickup, I used the pink wire in the #1 injector harness... . Worked nice and perfect

 

[JCleary]

Perhaps someone could clear something up for me?



On my dyno run a couple of weeks ago (Mustang dyno, I think) they had me run the motor in fifth gear at 3k rpms so they could calibrate their computer to my truck. They did this for every truck that was put the dyno. Then I did two pulls and got my sheet.



I noticed about a month ago at another shop (with a Dynojet) they weren't doing the same rpm calibrations. I was trying to figure out how they knew the rpm readings and coming up with both torque and hp curves.



Can anyone give me some insight?



thanks.