408 going in, base tune for initial fire-up - critical
Thread Starter
On The Tree
Joined: Mar 2006
Posts: 125
Likes: 0
408 going in, base tune for initial fire-up - critical Have a 408 LQ9 iron short-block going in and need some ballpark adjustments to a stock 2002 LS1 tune for initial fire-up. From everything I've read and heard, the first couple heat cycles are critical to seating the rings and all that. So I don't want to spend time dicking around with a stock LS1 tune to ballpark A/F and timing so the car will run right for break-in.
I already have done the calculations for IFR table and displacement/cyl. But need to know what adjustments to VE might help aside from the 60%-70%-80% in the low-RPM (400/800/1200 RPM columns).
Anyone out there can share some of their experience doing this right the first time?
I use LS1Edit, but even if the info is in HP Tuners values, I can convert...Thanks guys.
Engine configuration is:
- Compression 11.4
- Forged rotating assembly w/Diamond -10cc pistons
- FAST 90mm intake/90mm TB
- SLP 85mm MAF
- Stage II LS6-style CNC ported heads 59cc chambers
- 42# injectors.
- 25% UD pulley
- TSP MS3 cam (237/242, .603"/.609" 112LSA)
I already have done the calculations for IFR table and displacement/cyl. But need to know what adjustments to VE might help aside from the 60%-70%-80% in the low-RPM (400/800/1200 RPM columns).
Anyone out there can share some of their experience doing this right the first time?
I use LS1Edit, but even if the info is in HP Tuners values, I can convert...Thanks guys.
Engine configuration is:
- Compression 11.4
- Forged rotating assembly w/Diamond -10cc pistons
- FAST 90mm intake/90mm TB
- SLP 85mm MAF
- Stage II LS6-style CNC ported heads 59cc chambers
- 42# injectors.
- 25% UD pulley
- TSP MS3 cam (237/242, .603"/.609" 112LSA)
Just get a basic in there and log from ignitial start.Adjust quickly to get the A/F in check and you should be good. I kind of forget the LS1 edit tables since it's been so long.
