I did turbod 2 civics as my dailys. my first one made 262 went11.87 on bfg’s the next one made like 280ish went 11.88@120 on slicks.
The key to the stock ls’s is to keep the RPMs below 7100.The biggest reason I was running threw the motors is 1. they where close to 200K motors and I was revving them to 7600 to prevent shifting to 5th in the 1/4. The turbo a Ran was a t3/60-1 It made full boost by like 5200.
goodluck
joe