I took the truck and had her dynoed with all my mods. I have the graph of my stock dyno ( The stock run had a filter kit only) vs. today's dyno. The dyno runs were all done with the truck at full temperature. The graphs can give you an idea of the gains from the following JDM mods: Lower pulley, 90mm MAF, electric fan, waterpump, JDM custom chip, and single bladed throttle body. I wish I could get rid of those darn spikes???

Stock Max HP 343.8 HP Stock Mak torque 422 ft-lbs
todays Max HP 414.9 HP Max torque 458.5 ft-lbs
These are corrected numbers.


Rob

 

Here ya go Rob - nice #'s

 

Nice numbers. I think those spikes is the torque converter locking up. Could you hear it "lay down" around the middle of the run? I knowticed our truck had those spikes with our old PSP chip, but with the new PSP chip it wasn't there. But i could hear it "lay down" as it locked up.

 

Jim,

Thanks for the help with the pic!!!

Lightning Boy,
Yes I think that was the torque converter. I talked to JDM and they told me how to prevent that on future dyno runs.

 

My 99 only managed a best of 315 hp stock and 358 chippenfiltered.

Are the 01s really that much stronger?

 

My truck is a 2000 model.

Just a thought, the guys at the shop where I had my truck dynoed are really great. I bet if enough people near the Knoxville, Tn area was interested,we could work out a group deal on the weekend and rent this thing for day. My three pulls today was $50. I bet we could get it cheaper,if enough was interested.

Rob

 

Nathan

I have seen a couple 01's dynoed and yes they are that much different stock....

Did a side by side compare with my chipenfiltered 2000 and the compare wasnt pretty. BUT it isnt worth $3-6k to trade up in my mind

Doug

 

Wow Doug,

After a 90mm MAF and both trucks chipped, I really don't see that much of a difference from a 99/00 to a 01 from the dyno runs I've seen.

What do you know that the rest of us don't? The 20 hp is easly made up.

Now if you could get one in yellow, the $3k would really be worth it IMO.

 

Rob, those numbers are bogus because they are not read in the power curve, but at the peaks. Also, it's hard to tell the true shape of the curve, to see the effective power range. I have a few suggestions for you:

Go back to the dyno place. They store the runs on thier computer. Ask them to bring up the info agian, but have them change the hp and tq axis' to start at zero and go up. For some reason your graph goes into negative numbers, and half your graph is dead space. What that does is "squish" the curve, and you can't really get a good look at it's shape. What you can also have them do, is move the reading line over the highest spots that are not peaks in both hp and tq curves, and that will give you your true readings.

If I had to guess from your graph, looks like you made about 390rwhp and about 440rwtq, which are still great numbers.

 

Let me clarify a few things here. I posted what was printed on the sheet. It gave me peak numbers and it gives you a feel of the net gains. The peaks are in both charts and I can not do anything about that. I hate the torque converter for those peaks. I should have started the run in 2nd and shifted her to third and it would have elimated the lockup peaks. Feel free to call the dyno operator and ask as many question as you like. The run that was posted was the last of three runs with only a minute between runs. I comnpleted all three runs within 5 minutes. If I had the opportunity to get a cool run the numbers would have been much better. If you look at the 5300 rpm range the HP gain is 80 hp. At the 4100 rpm range the gain is 45 hp. Torque numbers are showing a gain of 50 ft-lb at 4200 rpm and at 5300 rpm it is 75 ft-lb.
I am very pleased with that. I also run a very, very conservative street program. I told Jim at JDM that I never wanted to worry about detonation. I never drag race. I wanted a very safe reliable street program. If someone would like, feel free to send me a very safe street chip that works with my 90mm MAF and I will have her dynoed. I must caution you though I have spent hours with Jim tuning the chip to get my shifts and driveability the way I wanted them. At 1/4 to 1/2 throttle the truck shifts are a little firmer than stock but at WOT she will lay rubber. The tranny line mod valve helps that. I am very pleased with these results!!

 

Um, okay.. Nobody said anything negative about your post or who you use for a tuner that I can see. Not really sure why the defensive post, everyone was giving you thumbs up.

 

Dark Horse

I said that stock the 2001's make more power stock to stock. And I said that my 2000 with a weak chip and a dirty filter made about the same power as a stock 2001.

Doug

 

I guess calling his numbers "bogus" set him off sal.

 

$4800 to be exact Doug, and IT WAS WORTH IT! LOL

 

Rich, I meant his PEAK numbers were bogus. It's a common mistake. I was trying to explain that he could go back to the dyno shop and get a better graph than the one they gave him. Based on the graph shown, I gave my best guess at what the actual power numbers were and said they were still great. Was just trying to help the guy out.