LQ9 Turbo Build Question
#1
LQ9 Turbo Build Question
Hey Guys, newish to the site, read a lot of stuff on here but haven't posted. I recently got a really good deal on a 2003 LQ9 motor. I am planning on putting it in a 99 Trans Am and then adding a turbo. My first question is as far as the tune, will a stock LS1 tune work in the LQ9 to get it up and running enough to drive and will it drive well enough to get it to a shop to be dyno tuned? or is there too much of a difference between the 2 motors? cam specs and other things seem relatively similar? Or would I need to get a decent tune in it first? I plan on running the LQ9 as a stock motor with a BBK SSI intake and 85mm throttle body, I was also going to leave stock injectors in at first (to get it running) and then go to 42 or 60lb injectors and a 78/76 turbo setup. I currently have an unlocked computer with a stock LS1 tune that can be used with this motor which is the reason for the question. I also have access to HP Tuners. I know you guys will point me in the right direction!
#2
TECH Apprentice
I know there are a lot of places with tune libraries that you may be able to find a tune similar enough to your set up to get it to drive well. Gearhead efi, HPtuners forums, https://sites.google.com/site/sloppywiki/tunecabinet (sloppy Tune Cabinet).
As for your set up you may want to look into valve springs
As for your set up you may want to look into valve springs
#4
thanks for the replies! That was going to be my plan was to drive it to a tuner without getting into boost, but I already have an extra computer with a stock LS1 tune, I do not have a stock tune for the LQ9 and cant seem to find a stock tune on HPTuners or on the web anywhere. Would the stock LS1 tune be close enough to the LQ9 tune to drive it to the tuner? I was going to leave the stock injectors in and then swap to 60lbs once its at the tuner.