AVC-R rpms not matching tach. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

idahotuner · 07-03-2008, 08:42 AM

i have my avc-r all wired in. and i am almost 100% sure i did it correct. i wired the rpm signal wire into the rpm wire coming off the ecu unlike some people who choose to wire it into the injector wire.

but when i set the display for my avc-r to show revs they dont match my tach. i do have a 180sx gauge cluster. but my tach is right on. cause i have bounced it off my rev limitor at 8 grand a couple of time.

its kinda hard to go through and set up the controler over the different rpms if they arnt matching up. or will it still be all right. ?

could it be that i didnt go through the self learn mode correct?
and if that is the problem i only did that as a temporary deal until i go through and set it up manually for every gear.

BiG MiKE86 · 07-03-2008, 11:56 AM

^^Are you running stock ECU? If so, I believe the Rev. Limit is not 8k but 7,200 RPM - goodluck

Are the revs. matching up on idle or is it just the rev. limit?

LongGrain · 07-03-2008, 11:58 AM

yea, stock rev limiter is not 8k

frosti108 · 07-03-2008, 12:20 PM

not sure if this makes any difference, but the rpm is different between my tach and my AFC NEO readout. i noticed this while setting my timing. im not sure if it did this before i got my tuned ecu or not...

SoguRacing · 07-03-2008, 12:26 PM

i think that there is a setting in the avcr for adjusting the rev reading. i'm not 100% sure about that but i have the avcr too. take a look in the manual

idahotuner · 07-03-2008, 12:38 PM

lol i have an enthaply tuned ecu. with limitor set at 8000. and no its not matching up at idle either. it is higher at idle then way low at WOT.

^ i know there is points you have to go through and set up. which could possibly be it. but one of the start up deals is turn it on and see if RPMS match. hmmm so i am not sure.

its not telling me my speed correct either. i think that might be becasue the avc-r is in KPH and the ECU is telling it MPH. but itsa retop ecu. i know my bigger tires through it off i nthe back. but the speed thing is closer to correct the slower i go.

i soldered all the wires no but connectors for me. and its boosting fine. and controlling boost fine. its not exactly really stable yet. casue i just have it on auto mode.

idahotuner · 07-03-2008, 04:27 PM

well i messed around wit hsome settings. and i thought i had it set on 4 cilinders. but no it was set on 6 and it was set on gear as 4 when it should have been two. but thanks anyhow guys lol.

reccakun08 · 07-03-2008, 11:24 PM

haha that happened to me too. u should of searched for one of my old post.

idahotuner · 07-04-2008, 02:02 PM

yeah i did alot of searching on how to set it up and stuff and only came up with one site for doing. it. so i went through and did the whole procedure today. ..... well i guess this thread is done.

07-03-2008, 08:42 AM	#1
idahotuner Zilvia FREAK! Join Date: Jan 2008 Location: St. Maries, Idaho Age: 35 Posts: 1,276 Trader Rating: (17) Rides Gallery: idahotuner Feedback Score: 17 reviews	AVC-R rpms not matching tach. i have my avc-r all wired in. and i am almost 100% sure i did it correct. i wired the rpm signal wire into the rpm wire coming off the ecu unlike some people who choose to wire it into the injector wire. but when i set the display for my avc-r to show revs they dont match my tach. i do have a 180sx gauge cluster. but my tach is right on. cause i have bounced it off my rev limitor at 8 grand a couple of time. its kinda hard to go through and set up the controler over the different rpms if they arnt matching up. or will it still be all right. ? could it be that i didnt go through the self learn mode correct? and if that is the problem i only did that as a temporary deal until i go through and set it up manually for every gear.

07-03-2008, 11:56 AM	#2
BiG MiKE86 Nissanaholic! Join Date: Mar 2007 Location: Ft. Lauderdale Age: 37 Posts: 1,776 Trader Rating: (12) Feedback Score: 12 reviews	^^Are you running stock ECU? If so, I believe the Rev. Limit is not 8k but 7,200 RPM - goodluck Are the revs. matching up on idle or is it just the rev. limit? __________________

07-03-2008, 12:20 PM	#4
frosti108 Zilvia Member Join Date: Mar 2006 Location: Norristown, PA Posts: 281 Trader Rating: (1) Feedback Score: 1 reviews	not sure if this makes any difference, but the rpm is different between my tach and my AFC NEO readout. i noticed this while setting my timing. im not sure if it did this before i got my tuned ecu or not... __________________ Goodnight

07-03-2008, 12:26 PM	#5
SoguRacing Post Whore! Join Date: Nov 2007 Location: (714) Age: 38 Posts: 2,967 Trader Rating: (23) Rides Gallery: SoguRacing Feedback Score: 23 reviews	i think that there is a setting in the avcr for adjusting the rev reading. i'm not 100% sure about that but i have the avcr too. take a look in the manual __________________ Pre Tune Checkup! Compression,LeakDown,Vacuum Test $80. Cams Install: $180

07-03-2008, 11:58 AM	#3
LongGrain Post Whore! Join Date: Sep 2006 Location: Midwest Posts: 2,741 Trader Rating: (5) Feedback Score: 5 reviews	yea, stock rev limiter is not 8k

07-03-2008, 12:38 PM	#6
idahotuner Zilvia FREAK! Join Date: Jan 2008 Location: St. Maries, Idaho Age: 35 Posts: 1,276 Trader Rating: (17) Rides Gallery: idahotuner Feedback Score: 17 reviews	lol i have an enthaply tuned ecu. with limitor set at 8000. and no its not matching up at idle either. it is higher at idle then way low at WOT. ^ i know there is points you have to go through and set up. which could possibly be it. but one of the start up deals is turn it on and see if RPMS match. hmmm so i am not sure. its not telling me my speed correct either. i think that might be becasue the avc-r is in KPH and the ECU is telling it MPH. but itsa retop ecu. i know my bigger tires through it off i nthe back. but the speed thing is closer to correct the slower i go. i soldered all the wires no but connectors for me. and its boosting fine. and controlling boost fine. its not exactly really stable yet. casue i just have it on auto mode.

07-03-2008, 04:27 PM	#7
idahotuner Zilvia FREAK! Join Date: Jan 2008 Location: St. Maries, Idaho Age: 35 Posts: 1,276 Trader Rating: (17) Rides Gallery: idahotuner Feedback Score: 17 reviews	well i messed around wit hsome settings. and i thought i had it set on 4 cilinders. but no it was set on 6 and it was set on gear as 4 when it should have been two. but thanks anyhow guys lol.

07-03-2008, 11:24 PM	#8
reccakun08 Zilvia FREAK! Join Date: Jun 2003 Location: Rockville, Maryland Age: 39 Posts: 1,090 Trader Rating: (5) Feedback Score: 5 reviews	haha that happened to me too. u should of searched for one of my old post.

07-04-2008, 02:02 PM	#9
idahotuner Zilvia FREAK! Join Date: Jan 2008 Location: St. Maries, Idaho Age: 35 Posts: 1,276 Trader Rating: (17) Rides Gallery: idahotuner Feedback Score: 17 reviews	yeah i did alot of searching on how to set it up and stuff and only came up with one site for doing. it. so i went through and did the whole procedure today. ..... well i guess this thread is done.