I had a question regarding full throttle launching. I have my VTEC engagment at 4700RPMs, I was grabbing and bogging at 4500RPMs at the track so I decided to up it to 5000RPMs. The sound of the car was a lot nicer due to the using the larger lobe, but I was a little worried about launching in VTEC. I couldn't watch but I would imagine that before I launch VTEC is engaged but then when the clutch engages the RPMs drop and VTEC disengages then re-engages. (Note that my vtec engages regardless of Vehicle Speed).

Do any of you launch with VTEC actually engaged (remember most ECUs wont engage when you are under 20mph)?

 

some people lock the vtec lobe on constantly

 

Hmm, I just didn't like the thought of it engageing, disengaging, then engaging again. Also I didn't know if it was hurting anything, why did factory ECU code not let VTEC engage under 20mph?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beta13 &raquo;</TD></TR><TR><TD CLASS="quote">, why did factory ECU code not let VTEC engage under 20mph? </TD></TR></TABLE>


so you dont engage vtec when you not in gear

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SUPERNATURAL &raquo;</TD></TR><TR><TD CLASS="quote">some people lock the vtec lobe on constantly </TD></TR></TABLE>

how? can you just hook a 12v source to the vtec soleniod? i was under the impression that this would not work.

 

u can hook up a 12v to it...just use it with a button...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FormulaGSR &raquo;</TD></TR><TR><TD CLASS="quote">how? can you just hook a 12v source to the vtec soleniod? i was under the impression that this would not work.</TD></TR></TABLE>

you can reverse the vtec pins and add a spacer to lock the rocker arms constantly

 

or use a small bee bee...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DEVIOUS_EF* &raquo;</TD></TR><TR><TD CLASS="quote">or use a small bee bee... </TD></TR></TABLE>


i would use zipties and jb weld if i could

 

If you engage VTEC with a +12v source the ECU wont switch the maps.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Suprdave &raquo;</TD></TR><TR><TD CLASS="quote">If you engage VTEC with a +12v source the ECU wont switch the maps.</TD></TR></TABLE>

yeah in the back of my head i was assuming that everyone that locked the vtec was using a speedpro or some **** to compensate,

 

Turned on at 2000 RPMs through the hondata on mine. Cant do a full throttle launch on the 2-step though. I get full boost on the blower and make 3 piece axles.