LML mods and dyno testing begins
- Thread starter IdahoRob
- Start date
Stock tune seems about 20-25 hp lower than is should be. did the computer limit it during the dyno pull? This a post from MIkeL "--------------------------------------------------------------------------------
Dynoed my LML last Saturday at Westech on their Superflow.
355 hp and 655 tq. Totaly stock. "
It must be the dyno as Rob's truck runs every bit as good as mine, maybe a little better. I run the same tune as his on my truck.
Yeah, seemed a bit low to me too but every dyno is different so the gain is the more important part of the equation.:thumb:
built trans maybe robbing some power? unless yours had all the goodies when it went on the dyno back then
Agree, it is on the low side. The cool thing about having a dyno is testing winter fuel and heavy wheel/tire combo. This truck is running winter fuel which we see about 8% decrease in HP and a heavy wheel/tire combo which accounts for another 5% or so in my testing over time. These numbers vary according to HP and truck, etc.
The truck in the summer on stock wheels made 359hp, so the current winter fuel/tire combo is fairly accurate IMO. My dyno has proven over time to be a goldilocks, doesn't read too high, nor too low, but seems just about right.
Anyway, the dyno is just a tool to see changes. The air filter swap numbers blew my mind, stock and with performance tuning. I'll get around to that when time allows.
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Yes that could have been worded better. I am sure it is going to be emissions tested, what I should have asked is will Rob be showing the difference between stock and modified emissions.
Or if you were referring to the typos it was posted from my phone and the crazy auto fill/correct constantly changes THIS to I HE
I usually catch and correct it before or right after I post. It dose all kinds of crazy things that I don't know how to stop.
This is why comparing dyno numbers is gay. It will be awesome seeing the gains per mod made on the same dyno to see a accurate result.
Yeah that's pretty much all its good for. The differences you can get between dynos are huge.
I'm definitely interested in seeing this step by step.
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They do here in Boise. We are 1 of 2 counties in Idaho that sniffs diesels unfortunately
They do here in Boise. We are 1 of 2 counties in Idaho that sniffs diesels unfortunately
I just heard that the other day from my friend that works at Meridian ford. surprised me.
black LBZ passed with a .4 out of 40 with all its mods. so i think they are pretty forgiving on them tho lol
and robs truck with full emissions and how clean it runs, he doesnt have any issues
and robs truck with full emissions and how clean it runs, he doesnt have any issues
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Dustin did they give you a printout?black LBZ passed with a .4 out of 40 with all its mods. so i think they are pretty forgiving on them tho lol
and robs truck with full emissions and how clean it runs, he doesnt have any issues
Agreed,. My question was not exactly about the numbers, but as to whether the computer was cutting hp, which would be another issue to manage with the addition of tuning, turbo etc. to a stock emissions vehicle.
I took the stock tune and just removed the speed limiter. By the looks of the dyno graph and the data logs the ecm isn't limiting anymore than the modded tunes.
Soot grams went from 11 to 22 after a day of dyno and road testing so that shouldn't have been a factor as the stock runs were when soot was in the 12-14 range. Rear tire diameter did change though...
black LBZ passed with a .4 out of 40 with all its mods. so i think they are pretty forgiving on them tho lol
and robs truck with full emissions and how clean it runs, he doesnt have any issues
same thing they have done here in phx for years. over 40 opacity and you dont pass. ive blown quite a bit of smoke on the sniffer before and only hit a 20. usually im around 1-5 lol.