Try "pig" rich. Leaning it out could/would pick up more ponies.

 

Jeff,
Actually i do know the answer to this because i have done it dozens of times on the dyno and here it is:Contrary to what most believe, but on the dyno as soon as that chip is installed it is at max.HP right away as far as numbers are concerned.I have done this on numerous occasions where my chip has been in my truck for weeks and make a pull lets say 404HP then take chip out and falls down to 376HP let cool and install chip back in and immediately goes back to or very near the 404HP everytime along with the torque also!I remember the first day i put my chip in my truck at a dyno and it made 344 stock,with chip only jumped to 385HP with no learning curve,then waited a couple weeks went back and still made the 385HP so from what i have seen it does not make any difference from my findings!

Matt

 

Thanks Matt. I guess that blows some tuners out of the water as far as the pcm learning time. You have realtime data. Interesting stuff these Lightning trucks..

 

Many people have the misconception that there is a specific "learn time" for a vehicle to reach an optimum point. The fact is, the vehicle is ALWAYS learning. Everytime you drive, the adaptive fuel tables are always adjusting. There are times when the fuel tables will "even out" within a certain range, but the computer never reaches some kind of set point.

Any time you dyno or race at the track, it is always best to clear the adaptive tables by disconnecting the battery. What that does, is reset the fuel tables, and then you get the true results of the chip without having been altered by the fuel trims. This is especially important if you travel a long distance to a track or dyno, then plan to run the truck. When I race or dyno tune a truck, I always clear the battery between every pull.

 

In my opinion anyone that wants to run a chip to its full potential should run it on a dyno and get with there tuner to make any ajustments that may be needed. Thats the only way they can help us.

Can someone help me out though,tamllimeca posted here that JL's chip seems to be running lean. Am I looking at it wrong or what? It looks richer to me and that would explain the lower HP numbers but would also be safer. At the end of the chart JL is 11.1 and PSP is 12.5. Am I looking at it wrong?

 

How much boost with the 2 pulleys, 3# - 7.5# is available with both pulleys?

 

How much boost?

Sorry guys. The best I can do is estimate right now since the stock guage doesn't go past 10 and isn't supposed to be all that accurate anyway. I'll eventually install some lunar series autometers when they come out.

Best guess:

2# upper + 2# lower = 4.5-5 lbs.
Chip and filter = 1.5-2 lbs

I'd say somewhere between 6-7 lbs extra boost. It's just a guess based on the posts I've read and the gains others have made with similar mods. In fact, it seems to me that some of the dyno results I've seen, from people with less boost, have been better. The guy that runs the dyno that I go to has a wall of shame where he posts the dyno results for some of his customers. He has never had a stock L make more than 310 rwhp on his dyno. It seems strange to me that I don't remember ever seeing anyone here post a result that low.

 

usahooters,

You are looking at it correctly. The JL chip is richer.

 

Thanks Incon306, when the rich to lean post was made and nobody else commented on it got me to worrying that maybe I was doing something wrong. Im sure either one of the tuners will be glad to richen or lean out the chip for anyone that requested it. I know my JL chip is real close to a 11.5

 

Odin:

Send me an email ( george@spikeengineering.com ).

Spike

 

Spike Engineering,

You've got mail

 

As I like both JL and Sal, I would say the tuning is about equal. The difference for the power here is all A/F.

For myself, I would prefer to stay under the 12.0, i think JL said my chip is running at 12.3.

I think this year at the track, i will probably run just a hair of octane boost to be safe.

 

A lot of the guys here have not been to a dyno or done anything to check the safety of their mods. They listen for detonation. If there is none, then they have a good set-up. My post has shown some of them that they need to check-out their chip programs. It's not an exact science. Adjustments are likely to be required.

The guy at the turbo place where I go to dyno (Lot's of experience tuning various vehicles), was impressed with the tuning on the PSP chip. He expressed concern, however, for the amount of timing required to make the numbers from the Diablosport chip with that rich of a mixture. Maybe someone can explain why this is a problem.

 

11.5 is not rich at that rpm for that power level on pump gas

 

The number is the A/F ratio. The higher the number, the leaner the mix. JL's chip is actually running richer than the PSP chip.