I was at the track last friday. My mods are catless turboback,intake,o2 housing, fuel pump,mbc,ported headers, flash, and clutch, flywheel. I usually run 23 psi but for some reason i was only doing 20 at the track. I also use a 50 shot of nitrous but i had technical difficulties and i couldnt use it. Also the track is at over 4,000 feet and the temperature was around 83 F.

Reaction .744
I1 1.937
I2 5.626
I3 8.688
mph 80.131
I4 11.363
E.T 13.626
mph 100.384

My last run i adjusted the boost up to 25 psi.

Reaction .276
I1 1.848
I2 5.517
I3 8.530
mph 81.270
I4 11.165
E.T 13.385
Mph 102.174

What do you guys think?

 

Your boost was 20psi, because you were never below 5500rpm. You were still really running 23psi, but it wasn't showing on your boost gauge, because boost tapers down by 5500rpm. If you turned up your boost, then you were risking your motor, because you're not tuned for it and are on 91oct unless you were running race gas and didn't mention it.

The times and traps are sucky, but altitude sucks - I know first-hand. I lost ~60whp at 7000rpm when I moved to Colorado.

PS. We only have one header.

 

Yeah bro, we feel you!! Altitude kills it ...try altitude and heat . On a serious note, you should be able to improve your times with more practice.

Carlos