Last week i had my first dyno pull she put down 296rwhp 330rwtq 429rwhp and 562rwt on the 150shot

I believe the tune i have is off on timing, Using a tech 2 i just ran it and discovered its getting 5* of spark retard at wot upper rpms 4-6Krpm how much power am i loosing?

heres my graph

 

When did you get the 5* knock retard - NA, N2O or both?

Its leaning out a bit above 5,000rpm NA.

 

off the n2o its pulling 5*, i dont know whats going on with the spray.

 

Looks like a dry shot to me he might just be running out of fuel on whatever injectors he has.

Steve

 

Actually it looks way rich on the juice after the ECM reacts to the extra air. I personally don't like dry shots. Look how lean it gets before the ECm catches up.

Re'

 

nah its a wet kit, i guess the lean out was due to the air purging out of the fuel lines while the spray was on
just changed jets to 150 before that pull

 

Look at the red line for the NA pull..... the A/F ratio is around 13.0:1, and then starts climbing to 13.6:1 as the RPM goes up.