After 317 head swap
Thread Starter
Teching In
Joined: Feb 2015
Posts: 46
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From: Ny
After 317 head swap I have a 87 trans am with a ls swap in it. It was a stock ls1 and then I decided to turbo it and added a tubro (precision 76mm)
After the turbo I decided to install 317 heads to bump up the boost a little. After the head swap 2 nights ago I started it up and It runs really rough at cold start. When warmed up it runs fairly smooth but every 10 mins or so the computer would lean the AFR out. I can see that's it's leaning out on my wide band, also at cold start the engine runs verry lean!
Also seen on the wideband.
I do not have my rmp gauge hooked up because I'm waiting on a tune.
I also have a mail-in tune from hawks third gen. ( the people I bought the turbo from)
What do you guy suggest I should look for? And ideas?
After the turbo I decided to install 317 heads to bump up the boost a little. After the head swap 2 nights ago I started it up and It runs really rough at cold start. When warmed up it runs fairly smooth but every 10 mins or so the computer would lean the AFR out. I can see that's it's leaning out on my wide band, also at cold start the engine runs verry lean!
Also seen on the wideband.
I do not have my rmp gauge hooked up because I'm waiting on a tune.
I also have a mail-in tune from hawks third gen. ( the people I bought the turbo from)
What do you guy suggest I should look for? And ideas?
