03 cobra timing

[32vApe]

wondering what is the max safe timing at 4000 and 5000 rpm at wot on an 03 cobra with jlt cai, stieg. stage 6 port, 2.76 upper, bbk l/t's, catted h pipe. it's seeing about 12 lbs of boost and load is 175-180%. Right now I have 13deg at 4000rpm, 17 at 5000, and 20 at 6500. Only made 459rwhp and 447rwtq. wondering if more advance is safe for 93 oct.

 

[SVTDice]

You have ALOT of headroom to expand, On 93 I would not go past 22 timing, But thats just me.

By the way your numbers seem a little down, Who is doing your tuning? Any belt slip? Pegging the Injectors or MAF? Let me know!

 

[32vApe]

I am doing the tuning. Maf is at 4.9v at the top. It's not running out of fuel 11.8:1 accross the board. It's holding 12lbs boost steady in 60 deg air. I figured I could run 22deg at 6500, but I don't know how much I can run at 4000 and 5000 rpm.
I see you have a similar set up. How much boost do you see? This car also has a flowmaster cat back. Maybe some power is lost through that?

 

[DarkMach1]

Do you have a stock cobra bottom end on B heads with no port? If so your numbers are right on and realistic. IMO the lower end timing seems a little on the low side but I'm not tuner, but I'm sure there are a lot of guys here that can give you input on what timing should be.

 

[32vApe]

it's a 2003 Cobra. Mod list

JLT RAI
Steigmier stage 6 port
2.76 bf upper w/idler
BBK long tubes
catted h pipe
flowmaster 2.5" cat back
afco heat exchanger

We were hopoing for 470-480rwhp. I would like to add some timing and head back to the dyno. I just dont know how much more to add safely on 93oct.