Gday all,
I live in semi-rural QLD, Ive had my rb20 cefiro dynoed twice, about 2 weeks apart, no difference to tune. Its running a remapped standard ecu and I wanted to check the AFR's.
The two dynos were different by 72 HP at the same boost, what the heck?
Im very confused as to how they can be so different.
Also the first dyno operator said my AFRs were unsafe and it was a "bad tune" so I decided to get a second opinion.
The second guy (lower reading dyno) however said AFR's were fine.
Who is right? Do I need a 3rd opinion?
RB20det
Mods:
Garrett GT2871R .48 trim/0.64 AR
GTR injectors
split dump into 3 inch exhaust
FMIC
Z32 AFM with pod filter
Remapped standard ecu for mods
Bosch 040 pump
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(1st Shop- tried 2 eproms, 1st was a little lean but headed for higher hp, 2nd tune got 246hp on14psi)
2nd shop- 174hp run was 14-15psi, 2nd run 188hp 17psi)
2nd Shop- AFR plotted at 17 psi
One last question, I have a power fc sitting around- is there likely to be any gain to me if I put it on and get it tuned?
I'd really like 300 rwhp,
thanks Jes