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Zero dark · 08-18-2015, 07:42 PM

Im a tune noob and only minimal ideas on how it works but here goes

Tune #1
HFC
K&N Intakes
AAM Short tails

baseline 265
tuned to 309

Tune#2
replaced K&N with Takeda CAI (installed 3 weeks ago)
replaced nismo hpipe and midpipe with AAM S-Line Midpipe (installed today)

Time between tune, maybe 3 months
NOTE*** my check engine light came on last week for post cat fuel trim lean bank 1 and bank 2, car was noticably sluggish, and exhaust note didnt sound as good

baseline 275
tuned 286

how is this possible? tuner did not have a direct reasoning to justify these numbers, they were made on same dyno, DynoDynamics

only reasonable explanation was the CAI has some sort of restriction to affect this power loss

Any ideas?

08-18-2015, 07:42 PM	#1 (permalink)
Zero dark Enthusiast Member Join Date: Feb 2015 Location: Baltimore Posts: 379 Drives: 15 PW Nismo 6 SPD Rep Power: 10	help, retune lose power Im a tune noob and only minimal ideas on how it works but here goes Tune #1 HFC K&N Intakes AAM Short tails baseline 265 tuned to 309 Tune#2 replaced K&N with Takeda CAI (installed 3 weeks ago) replaced nismo hpipe and midpipe with AAM S-Line Midpipe (installed today) Time between tune, maybe 3 months NOTE*** my check engine light came on last week for post cat fuel trim lean bank 1 and bank 2, car was noticably sluggish, and exhaust note didnt sound as good baseline 275 tuned 286 how is this possible? tuner did not have a direct reasoning to justify these numbers, they were made on same dyno, DynoDynamics only reasonable explanation was the CAI has some sort of restriction to affect this power loss Any ideas? __________________ MD Art Pipes, MD Shockwave exhaust, AAM Intakes, Stillen Crank Pulley, Z1 25 Row Setrab, Whiteline Diff Bushings, 20mm H&R spacers, BC-BR Coils, GT-R push button, 3M, Tommy Kaira Knob, Takata Drift III, Custom Harness Bar, Zwork Headlights, EVO-R, Uprev