A question.

[SteveFord]

Alot more timing than I'm running.....

 

[2500HeavyDuty]

lets try not to turn this into a debate about timing.


tom what kind of pressure were you running/holding

 

[JoshH]

Well, I'm no pro, but from the tables you posted, I don't see anything that is necessarily bad.

 

[TheBac]

lets try not to turn this into a debate about timing.


tom what kind of pressure were you running/holding

Different tunes/trucks can handle different levels of timing I guess. I personally think its how/when you bring the timing in thats critical, but if you ask me to show you what I mean, I couldnt.

Rail? 160-164 actual on a 174 commanded.

 

[GMC_2002_Dmax]

I know so little about EFILive its just not funny. To that end, Id like to ask you guys to look at the following four tables, and give me your opinions about what would happen if this tune was run at the strip.

i think the timing is what killed it and is the only table to be concerned about here. and yes that is a lot of fuel down low.

Tom,

The trucks will all have short rods when you push them the way we do.

Your luck simply ran out.

 

[TOMAN]

Had a tune in my old big truck with a lot of fuel down low(had rod in it) at 60 ft it like to light the tires,this tune wold down stock rod in one pass,it makes me think of how hard I push the old truck with all the miles on it

 

[TheBac]

Yes, I ran out of luck , just like everyone else does eventually. But Ill come back relatively "stronger" next year.
Thanks for your viewpoints guys. You all have been extremely helpful to me this last year. :thumb:

 

[lotsofmiles]

Thanks for your viewpoints guys. You all have been extremely helpful to me this last year. :thumb:

:beer

x2

 

[rcr1978]

What I would like to know is a timing table that is pretty agressive in the lower rpm at higher elevation at least over 5000 feet that may be ok with no detrimental effects to rods going to be a rod killer at sea level? Does the lack of air/oxygen/less boost make a motor more tollerable for more timing? Another thing fuel economy tunes run higher timing at little to no boost so as we start adding some boost should we be a little more conservative on the timing?

Here is some things I've learned from others that have been nice enough to make some of it public.

We want peak cylinder pressure around 10 degree's ATDC if I remember correctly , splitting it 50/50 or 60/40 might be close :dontknow:

Higher timing=better economy, slow's turbo spoolup, more power, less smoke, cooler egts, higher cylinder pressure, increased engine wear, increased engine noise

Low timing= Lazyness, smoky, high egt's, faster spoolup, bad economy, longer engine life, lower cylinder pressure, basically opposit from above

 

[othrgrl]

I don't see anything wrong with the timing or PW tables, I wouldn't put so much fuel down low in the TBIQ table though. I personally don't like to run PW or timing that high - but if you have to run that kind of PW to get the power you're looking for you have to run the timing to go along with it.

 

[rcr1978]

I guess I kindof butted in on ur thread bac sorry, at the time I thought it was a good place to ask these questions since we where on the topic.