GT2871 USERS. SR motor

[Mesarina]

Went to the dyno last week.. car has

z32 maf
walbro 255
apexi pfc
nismo 740cc
tomei fpr
freddy intake manifold
stock exhaust manifold
gt2871r .64
3" complete exhaust

262,74whp/212,67rwtq @8psi
287,19whp/241,45rwtq @14psi
317,89whp/257rwtq @18psi
294,15whp y 268,22rwtq!!! @24psi but let off because of knock...

[LuckyX2]

Originally Posted by Mesarina

262,74whp/212,67rwtq @8psi
287,19whp/241,45rwtq @14psi
317,89whp/257rwtq @18psi
294,15whp y 268,22rwtq!!! @24psi but let off because of knock...

Something is wrong with your setup or the dyno. I made 299ftlbs of torque out of an S15 turbo at 17psi and you're only making 257ftlbs at 18psi on a 2871? It was also almost 20 degrees hotter the day I dynoed mine...

[Mesarina]

Originally Posted by s13_kidd

Kinda hard to believe there was just a 25 whp and 29TQ difference between 8psi and 14psi

can it be because i didn't touch the timing map between 8 and 14psi?

Originally Posted by LuckyX2

Something is wrong with your setup or the dyno. I made 299ftlbs of torque out of an S15 turbo at 17psi and you're only making 257ftlbs at 18psi on a 2871? It was also almost 20 degrees hotter the day I dynoed mine...

What may be wrong? not to much timing? Im running about 8degrees at the top to be on the safe side, more than 10 and I get knock readings near 60...