Header install got 25HP
Thread Starter
Safety Car
Joined: Apr 2017
Posts: 3,708
Likes: 344
From: Texas By God
Header install got 25HP
Men, look at this dyno and retune from yesterday.
Is the dip in TQ and 13.5-6 AFR acceptable.
Prior tune was spot on. This is for a street cruiser 05 LS2 that normally lives in the lower RPM range.
Is the dip in TQ and 13.5-6 AFR acceptable.
Prior tune was spot on. This is for a street cruiser 05 LS2 that normally lives in the lower RPM range.
Race Director
Joined: Dec 2013
Posts: 12,502
Likes: 3,631
Good pick up on power for headers with 25hp about the norm, but your still giving up a touch after the 5.6K point. Hence with your tune, the motor is going flat at 5.6K instead.
Hence by pushing timing a touch more and leaning out AFR after 5.6K, you can gain a touch more HP and get the motor bounce hard off the rev limiter instead.
05 MZ6, all stock LS2 motor/stock exhaust, on stock OEM air filter system to boot.
Note, base HP with OEM tune for a M6 on a LS2 will be 350RWHP/350RWT, with 411hp/411t at the crank.
Attachment 48339858
Hence by pushing timing a touch more and leaning out AFR after 5.6K, you can gain a touch more HP and get the motor bounce hard off the rev limiter instead.
05 MZ6, all stock LS2 motor/stock exhaust, on stock OEM air filter system to boot.
Note, base HP with OEM tune for a M6 on a LS2 will be 350RWHP/350RWT, with 411hp/411t at the crank.
Attachment 48339858
Last edited by Dano523; May 10, 2018 at 02:28 PM.
