Loss in acceleration + throttle response ??

King · 01-14-2017, 02:15 AM

I always chalked this up to the emissions system. My car was like that from the day I got it, it's what I expected stock. Since I went catless it's fantastic, a friend of mine even noticed from the passenger seat via butt dyno.

I may be wrong but, I blame the EPA.

ZeN · 01-17-2017, 10:04 AM

I somehow thinks that my narrowband (post CAT) O2 is off. Have anyone tried running with the post CAT O2 off and disabling code via Uprev/Ecutek yet ? This will be my next attempt, unplug the harness for narrowband at CAT and give it a whack at temp >90 deg C, if it doesnt bog then we know open loop rocks. Anybody tried this yet ?

On second note - have anybody check their fuel dampener, that could cause bogs as well.

Zen

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01-14-2017, 02:15 AM	#1 (permalink)
King Base Member Join Date: Oct 2016 Location: NorCal Posts: 86 Drives: 2015 370Z Pearl Rep Power: 10	I always chalked this up to the emissions system. My car was like that from the day I got it, it's what I expected stock. Since I went catless it's fantastic, a friend of mine even noticed from the passenger seat via butt dyno. I may be wrong but, I blame the EPA.

01-17-2017, 10:04 AM	#2 (permalink)
ZeN Base Member Join Date: Apr 2011 Location: Malaysia Posts: 116 Drives: 09 PW 7AT 370z Rep Power: 16	I somehow thinks that my narrowband (post CAT) O2 is off. Have anyone tried running with the post CAT O2 off and disabling code via Uprev/Ecutek yet ? This will be my next attempt, unplug the harness for narrowband at CAT and give it a whack at temp >90 deg C, if it doesnt bog then we know open loop rocks. Anybody tried this yet ? On second note - have anybody check their fuel dampener, that could cause bogs as well. Zen