Quote:
Originally Posted by Slowguy
I chose those injectors because I followed the LQ4 Turbo Sloppy Mechanics build to the tee. If I have to end up changing them, it's easy to do. I think (if I get the motivation to do it) this weekend I'll compression test all the cylinders, add a few drops of oil to each cylinder, check the fuel pressure, (and maybe, just maybe) figure out how to get a beginning log going with HPtuners.
Oddly enough, my tuner from Russia who always tuned my high performance Audi's said he HATES those injectors. He recommended tuning the base tune FIRST with the stock injectors and only after that's ironed out go with some 100 lb Bosch. So, the consensus seems to be, I need that much fuel for a 6.0 liter running that size of Turbo? Dunno. We'll find out I guess
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LS Short box sounds like he is on to something. It sounds like your tuner didn't put in the injector data for the new injectors. You said you bought HP Tuners? Go on the injector web site and see if the injector tables match what you have. Also, did you change the MAP sensor to a 3-bar? Maybe that info is incorrect?
There are a few really good videos on how to tune on Youtube. One guy has a whole series. I used these to straighten out my car when the guy I sent the computer to do a bench tune botched it. They state idle guides and chop guides, but they worked well on getting it running. The link to the ls1 forum is a whole series. He uses a Gen3 computer, but most of the info can be used with a Gen4 if you are using that. You never mentioned with computer you were using.
https://www.youtube.com/watch?v=qK1wWh26cbA
https://www.youtube.com/watch?v=pY2phcqg5Tk
https://ls1tech.com/forums/pcm-diagn...eo-guides.html