I have a 95 gsr.. im running the stock computer... those of you that have a gsr running the stock ecu... my question is that I hear vtec activate at 4100 , then something esle happens around 6krpm at full throttle like it kicks in again... I want to know what it is, also its doesnt happen sometimes and sometimes it happens..... I need an explanation thanks

 

vtec kick in at 4100 weird, but gsr have a secondary butterfly, second tone

 

vtec activates in the early 4100-4400 rpm's , then the second tone after 6krpm, i had the sound after 6k rpm for like a month then it goes away.. then comes back, i think it has something to do with oil maybe

 

Pull your vtec cylinoid off and clean it, check for debris

 

i just changed my oil, the second tone came back, i clean the vtec solenoid with parts cleaner

 

how long have you had your car? a guy i work with said he got his computer chipped so that the vtec will come on at around a little past 4000 rpm. maybe the previous owner did something like that.

 

i had it for about 7 months... i belive the secondaries open at around 4400

 

gsr vtec is supposed to kick in at 4400 and the secondary butterfles are supposed to open around 5700

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rukawa1one &raquo;</TD></TR><TR><TD CLASS="quote">gsr vtec is supposed to kick in at 4400 and the secondary butterfles are supposed to open around 5700</TD></TR></TABLE>

finally...


these are the sounds you are hearing.

 

VTEC at 4400 and secondary butterflies at around 6000, its not vtec just more airflow, it's oil pressure at 4400 and little throttles open at 6000 or so (secondary butterflies), the secondary butterflies should open all the time, then again make shure you have good amounts of oil, the ecu looks for the MPH your in, oil pressure, and a specific RPM (4400 in this case), then it's nothing but, VEEEEEEEEEEEEEEEEEETAAAAAAAAAAAAK!!!!!!!!!!!!!!!!! !

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Shaun &raquo;</TD></TR><TR><TD CLASS="quote">i just changed my oil, the second tone came back, i clean the vtec solenoid with parts cleaner</TD></TR></TABLE>
I need to do this too.