some help….please

[dondb]

This past winter i put a ls engine in my 69 camaro. I got a start up tune on a 2002 ecm out of a silverado from psi conversions. The car started right up and idled pretty good. I bought a HP Tuner to start learning how to tune my cars….right now i'm trying to get my engine to at least a drivable state. When i put the scanner on it there are so many things out of whack along with my rookie tuning status i don't know were to start?? I have been reading and looking at post for a few hours a night the past 3 weeks. I have a 5 pin maf…. i'm told the flow rate is that of a 03 to 07 corvette. Does anybody have a tune with a 5 pin maf so i can set the maf vs frequency with-in the ball park? Then i can set the fir and move on from there. My tuner can't see me for at least another month and i want to drive my car! The stft's were real lean as were the ltft's pegged at 25%, I adjusted my injectors to flow at 65psi with a 42lbs@58psi injector rating. I kept upping the maf vs frequency until the stft came down to about 0 but the ltft are still around 22…so still running real lean. Should i look for a intake leak or something or do you think it's all in the tuning??? LOL…i thought i would pick this tuning thing up faster but….apparently it's going to take some time and i want to drive my damn car So with some help from people here maybe i can at least get it to a safe state and drive the car until i get it to the tuner. The specs are: lq9 stock bottom, 0821 heads, ls3 intake, Nick Williams 92mm cable driven TB, spectra CAI and a 273LSR comp cam 223/232 .610/.617 112lsa. I've put a few post out and have not been very successful at getting responses…..i'm sure i'm not asking in the right way or giving the right information to get help

[mbray01]

You can check the tune repository for something close, but either way, you are still going to have to do a lot of scanning and remapping.
check here it gives you a short form guide on basic tuning that will get you in the ballpark. Tuning your file to the car will easier than making someone elses file fit.

ls1tuningguide.com

this has some very good abbreviated information.
for more indepth info you will have to get donald lasota's book for $75 which gets very detailed

but my best advise to start is get the ls1 tuning guide from above, it's cheap, and delivered instantly via email, and shows you how to set up histograms and using those fuel trim numbers to make accurate changes to your files.

[dondb]

Thanks for the reply Michael! i bought the guide from your reference above. Not many people on here willing to help i guess?? No problem though, i'll figure it out and have no problem helping others. It will just be a couple of extra weeks before i drive the car. I do have another car to fill the gap it's just the way this country is going i guess???

[mbray01]

trust me I know what you mean, the info is very sparingly given on this forum. I am always willing to help, when I know an answer. I know I wouldn't be where I am without the help of others. Nobody in this industry came in knowing everything. They had to learn from somebody or something. I get that, but apparently a lot of others don't. I get that there are secrets that most don't want to share, I am cool with that. However when it comes to basics, sharing with others should come second nature.

Read through that guide, most of what you need to know is in there. How to set up the histo's to map, and what to watch for. That guide got me tuning most ls1's When you start getting into advanced tuning you will need to get the other guide, and start doing searches to find more advanced info. You will also find a lot of the histograms that you will need for tuning on the ls1tuningguide.com site. And do yourself a favor, get wideband. There is absolutely no comparison when tuning. Using fuel trims and narrow bands will get you in the ballpark. But if you plan on optimizing the maps, the wideband is the only way

[dondb]

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