Boost and Timing on 91 + Meth (9 Turbo)
Feb 10, 2009, 05:41 PM
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Boost and Timing on 91 + Meth (9 Turbo)
OK well I thought we could start posting our boost and timing data to help each other out 
...I am running a 9 turbo in california (91 octane) with 100% Meth and mods in signature. I have been playing with boost and timing with the hopes of finding the optimal mix for power. Right now I am peaking around 28 at 4100 rpm and tapering to 21psi at 7400, but am still seeing some knock around 6K rpm so I may need to take another 1 psi out. I had really hoped to run more like 30 psi peak tapering to 24, but I just can't seem to get that to work on 91 
....
My timing goes from ~4* (in the 3800 area) to 14* (7400)
AFRs are ~10.8 to 11.2
So any thoughts? Do my numbers seem off? Am I just blowing lots of hot air ? Should I decrease the boost to 27 tapering to 19/20? Thanks in advance
...I am running a 9 turbo in california (91 octane) with 100% Meth and mods in signature. I have been playing with boost and timing with the hopes of finding the optimal mix for power. Right now I am peaking around 28 at 4100 rpm and tapering to 21psi at 7400, but am still seeing some knock around 6K rpm so I may need to take another 1 psi out. I had really hoped to run more like 30 psi peak tapering to 24, but I just can't seem to get that to work on 91 ....My timing goes from ~4* (in the 3800 area) to 14* (7400)
AFRs are ~10.8 to 11.2
So any thoughts? Do my numbers seem off? Am I just blowing lots of hot air
? Should I decrease the boost to 27 tapering to 19/20? Thanks in advance
