I'm 0 for 2 with the whole dyno thing...
 

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The air fuel numbers look alright. A little on the fat side right? (what's perfect) My question is, the spike or the loop in both runs. Is that a hesitation, then pull, or just a spike? This is the 2nd time I have been on the dyno. The first time I had similar mods and I was dynoing what a stock Lightning should. This time I am happy to have reached 400 horse, but I dont get the loop at 4400 rpm.
I contacted JDM and they said it was the dyno. I am curious to know if it is the place I brought the truck to, or if it is the chip.
The guy at the dyno said he's only seen a loop once before. (it was on a stock lightning) The guy had plenty of expierance with Lightnings. Jeff brought his 01 Lightning there and made some impressive numbers and did not have the loop. That's why I dont understand if it was the dyno, why it didn't do it on a diablo delta chip, vs the Superchip flip chip.
I don't want to keep spending all this money on dyno runs. The first few were cool, but they are $100 a pop. I'd rather be driving the truck down the track a few times... But I would like to get these #'s right. Any more info for me? What could have caused that loop? If it is the chip, or if it is the dyno? Thanks, Shane

few more pics...
 

I am going to try to get the video of the run up in the next few days.
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Thanks, Shane

I thought it was a joke pic, but I guess you're serious? I don't think a dyno pull can have a loop (in reality); I've done (and witnessed) between 100-200 chassis dyno pulls. I've never seen anything like that!

Jody

Looks like the run was done from a real low speed (possibly started in 2nd gear?) and the converter locked up causing the little loop..

Are you sure they went all the way into 3rd gear and made sure the converter was locked before the pull was started?

Also looks like your actual max power was 380-390ish..

-Dale

I was there and that dip was at 4400 both times. His pulls were in 3rd gear. One pull did downshift into 2nd but that run was aborted...Something is going on that's for sure. I'll bet it's NOT the dyno..

He peaked at 404 on the one pull. I am with you though...something is up like the truck shifted or something :confused:

Jeff,

How did you and cyntaxx do? I am interested to see how Charles dynoed as my mods are very similar...

Sorry Shane...didn't mean to hijack your thread:wave:

I'm not sure exactly how he did it. He did Jeff's first then mine. He made the first pass, then on the 2nd pass, he had to let out because the truck down shifted (to 2nd?) and the third pass it must have stayed in 3rd. It made two full passes, and on both it did the loop. I will try to get the video up for you guys. I know that won't do much. Do you guys think it was done wrong on the dyno or is there any chance it was the chip?

All of my runs the first time I got dynoed there was a dip then a attempt to rise also... (no loop)
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That time I had the same mods 4# lower, same program on my chip, and 2.8 upper. All I've put on was a spacer, idlers and a ported plenum... Any clue why my truck is loosing power at 4400-4800 on both different dynos?
:cool: Shane

Charles didn't make it.
:cool: Shane

LOL he was supposed to be the "mastermind" behind the whole thing LMAO

Charles said it was too long of a drive and he was tired..:rolleyes: Mine did not have those rollercoaster loops..:thumbsup:
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Jeff I just sent you an email.
Thanks, Shane

Back at ya....:banana:

Shane, I have dyno'd on a Mustang Dyno and a Dyno Jet, and I have to say I have never seen anything like that. Loops, dips, spikes what the he11 is going on with that result. I may have limited experience with this, but the last time I checked you are looking for a smooth path and curve, as mentioned above it almost looks like a joke.

You're a/f's hang in the 14's - 13's almost to 4000 grand, that's a little hot (lean) in my opinion, but at least you level in the 12's and 11's for the higher RPMs. I come out of the gate at 15, but I drop immediately to the 12's and level at 12.1 for the duration.

I hate to suggest this, but I would be looking for another dyno before I started pointing the finger at my L.

D-Day

Good Luck, Bro....

:thumbsup:

I'm not pointing the finger at the dyno or my truck. If I had to guess, going off of both dyno pulls, I'd say it was either the chip or something in the truck. (not the dyno) I have dynoed twice and it's done goofy things twice now. I dont know if it is the chip, or how they are doing the dyno with what I have in the truck. Like I said before they dyno Lightnings all the time. They dynoed a lightning with mods right before mine. (no loops) And they didnt have a problem. I dont mean to point blame on the chip, but I clearly can't point blame on the dyno. It's happened twice now.
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:cool: Shane