Quote:

<font face="Verdana, Arial" size="2">That right there says that the run was done in 2nd...unless you're running a set of 5.38's or shorter</font>

Not really.
I was there and I know the truck was in drive because I asked first what gear he'd be using.
When you look at the dyno chart there is a big spike where the 392 occurs, and that probably was in 2nd before the tranny shifted, then the power curve mellows out a little.
The first pull did this too when I made 378, but not as drastically.
Doesn't matter though the peak power was made at 63 on the second pull, and that number happened to be 392.
Whatever, it's just a number, and even the 378 hp was a good number, and I think it represnts what the 2001's are capable of.
Maybe I do have a strong truck, who knows, it's possible, and I'm happy with the way she feels and drives.
I never have intended for this Lightning to be an all out super truck anyway, my intentions have always been to keep it relatively stock so I can have a reliable daily driver.
My Cobra is making 600 rwhp and that's a car that you just can't drive to and from work every day, so I bought the truck!
I also never intended for this thread to become some kind of boast or tall tale, I just thought I'd share what the day's results produced at the Mustang Dyno at Blood Enterprises.
I now wish to get a dyno-jet test and I will soon.
If the numbers are similar great, if not, oh well.
This truck regardless of the dyno numbers is really performing for the first time since I bought it, and that makes me pretty happy, because I really thought it was kind of a pig before I put the Diablo chip in.

I'm not sure why all the skepticism though.
Didn't Johnny Lightning pull 380 with a chipped and filtered 2001 recently?

 

Seattlesnake
You just told us what we all suspected or where thinking. You quoted power numbers on a 2nd to 3rd gear shift "spike".

There are a lot of veteran dyno guys hangin around here, and those kinds of numbers wont fly with them. Thats why you have been questioned so much, they already know.

Not to worry tho, I'm sure your truck makes great power, but if you want to compare apples to apples, get it dynoed on a dyno jet thats what about 99% of the guys use around here.
Dale

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Black 00'
12.857 ET
110.49 mph
full weight, stock F1's

 

What is this shift "spike"? How can the truck drop 4 cyls WOT and make that big of a spike in HP and TQ?



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2001 Lightning
(Recv. Date 05/18/2001)

 

YIKES, he's very right. I was thinking backwards somewhat. I remember quite well now that you get lower #'s reported in a lower gear. I was really contradicting myself by saying a lower gear causes lower #'s, yet dynoing in a lower gear (2nd for an auto, or 3rd for a manual) on a dyno givfes you higher #'s.

No, you really have lower #'s reported for the 2nd gear run only, most likely, and too high of a # for the "spike". The spikes are coming when the car shifts. The torque converter causes this.

BUT, you stated that your peak power was at 63mph and this is not at shiftout. Shiftout does not occur until approx. 76 right? Okay...the ONLY thing I can come up with, is how you initially stated...you have a STRONG truck. I "would" like to see your vehicle on a dynojet dyno though, just to see the differences between the two. I'm not doubting you anymore. Glad you cleared that up again.

BfB

[This message has been edited by BfB (edited 06-04-2001).]

 

Hehe, yep, just looked at my dyno runs in my Vette, and saw that the #'s were lower &lt;G&gt;. Opens mouth inserts foot. I stated this earlier, but I said so in meaning my #'s were higher in 2nd, when they weren't.

Anyhoo, I have never heard that it drops 4 cylinders at WOT? Hmmm, but remember, if this is the case, I'm sure his "chip" he has corrects that.

BfB

 

Dropping cylinders between shifts is one of the first things a chip tuner "fixes"

Also, now days the chip tuners are locking the torque converter in 2nd gear. I have a race chip from JDM that locks the converer in 1st gear. Anyway, when the converter is locked it is direct drive to the rearend and you have to remember that the stock converter with fluid ways somewhere around 60lbs. I think thats where the spike comes from, there's a lot of stored energy there.
Dale

[This message has been edited by Bad as L (edited 06-04-2001).]

 

seattlesnake,

I _definitely_ was not questioning the numbers...I was just curious as to why they must've run the truck in 2nd. 63mph at WOT has to be 2nd gear...even with the 3.73s. Correct me if I'm wrong, people. My '99 with 3.55s and a chip will do 80+mph in 2nd.

As far as spikes occuring on upshifts...a manual trans will show _incredible_ spikes. An auto will also show spikes on the shift. In dyno-land, we don't count those.

What matters is that the Diablo chip obviously works!!

------------------
Wes Tarbox
90 LX 5.0 (10.69 @ 134.7)--615rwhp/594rwtq--Featured in Super Ford 1/00
98 Saleen S351 #15 (12.63 @ 113.8)
99 Lightning (13.20 @ 103.8)--364rwhp/447rwtq
00 Expedition XLT 5.4
http://hometown.aol.com/wa2fst/home.htm

[This message has been edited by WA 2 FST (edited 06-04-2001).]

 

When a torque converter locks up it's not giving you any extra power. It only allows your transmission to do the same amount of work at lower RPM's. You could lock up your converter at 10mph if you wanted to, but it's impractical for city driving with stop and go traffic. You're not gonna get anywhere faster with the converter locked up...you're just gonna save more gas.

 

Do you really know what happened?

 

This isn't necessarily true. Guys with larger stall torque converters will typically have an advantage by locking the converter up in high gear and sometimes 2nd. The Buick Grand National guys have been doing it for a long time, and I know of more than one LS1 guy that's doing it. I tried it a few times when I had my T/A and a 4,800 RPM stall. That huge amount of slippage will hurt you on the big end. On average, I picked up .05 in the 1/4 and 1.5-2 MPH by locking my converter in 3rd gear. I never tried it in 2nd since my converter was just a single-disc unit.
I apologize as well for saying that your #'s would be higher by running in 2nd gear. It seems that the opposite is true. However, the spike does explain the HP #. I was able to hold 3rd gear in my T/A, and I could get a torque reading over 600 lbs./ft. by flashing the torque converter. I'm not saying that you're truck isn't strong either. Whatever the #'s, your chip is definitely working, and you're very pleased with it. That is what counts! No matter what my #'s were on the dyno, I'm pleased with the way my truck feels and performs.

 

I have the dyno sheets scanned and I will post them tonight.

 

BTJ,

Gerald, is that you?

John D'Amico