Hey guys i do alot of tunning for diesel truck. I have tuned plenty 12's diesels. I am lost with gas. Is there anyone on here that has a diesel that knows how to tune gas.


I am looking for a badass tune for a 2007 chevy silverado with a 4.8 its got a cold air intake. Can someone please lend me a hand.

 

pretty easy, throw some timing at it like 7-9° across the whole main spark table pull most of the TM out and play with your PE tables a little

 

I don't have a tune for the 2007 4.8L yet but I can lend you a hand tuning it. Shouldn't be a problem. I'm more into gas but do diesels on occasion.

I've been tuning LBZs as well.

I'm using HP Tuners.

Basically, eliminate all TM on the engine, depending on what octane you run...start with 4 degrees across the table....93 octane...put 6 in. Adjust your PE fueling and TPS thresold. Also, up your idle spark to around 21-22 degrees. Etc...send me a PM and I can help more. Watch for spark knock/detonation. Some engines don't like as much timing as others but 4 degrees is a good start.

 

I hope that was a joke...

 

not at all. 4.8's take a lot of timing...

 

ok, IMO that is too much not to mention you mentioned nothing about the VE or MAF tables...

 

and tell me why would you mess with VE or MAF tables on a truck that only has a CAI, use the PE table to lean it out at WOT......now on a truck like mine that actually has mods done to it yes i would say mess with the VE and MAF tables

 

wow this is really close to what i said except he is a little lower on timing...a degree lower, he says 6 and i said 7

 

Huh, are you serious, why wouldn't you? So your saying the factory fueling portion of the tune is accurate and correct? I own a 4.8 and I have tuned it from bone stock till now...

 

yeah it's pretty close...have you ever put a WB on it....they are pig rich at WOT...

and i have tuned my 6.0 and have a 5,400lb truck that runs 7.5's all day long and takes a 200 and has been on a 250 shot for the past 30,000 miles and all on the stock block.....

What's your point?