HomeMade VteC ControlleR
04-23-2004, 01:23 PM
#1
0.5 BAR
Thread Starter
Join Date: Feb 2004
Posts: 125
HomeMade VteC ControlleR
I started this project 2 days ago and now I'm done. I ran into some trouble like when I hit Vtec the stupid PCM threw a DTC but I fixed that easily. What a difference it makes having Vtec kick in at 4500rpm. Just wanted to post this subject up and tell everybody why spend 100+ for a field or apexi vafc when you can make your own for less than $10. I agree the Field and Apexi controllers look much better but does the same thing as my homemade one.
04-23-2004, 01:59 PM
#4
Administrator
Join Date: Dec 2002
Posts: 13,991
Re:HomeMade VteC ControlleR
FYi, its proven that when vtec is set lower than 5000 you will have less useable HP in that range. We did several dyno setups NA and FI, each time we lowered it, there would be a huge dip in the graph. My vtec is set at 5800, I even had it set at 6000 on my crvtec. The only time it really didnt matter was when we were using it on a SOHC vtec, we had it set at 3000rpms, 4500 rpms and 5500 rpms, and the thing really didnt make to much of a difference.
So be advised.. just because you "hear" it sooner, and you think its actually faster, its probably not.
Jeff
So be advised.. just because you "hear" it sooner, and you think its actually faster, its probably not.
Jeff
04-23-2004, 09:28 PM
#7
Banned
Join Date: Aug 2003
Posts: 2,898
Re:HomeMade VteC ControlleR
Of course jff is right, if you look at it from an mechanical standpoint.. Vtec is mostly about increased breathing via ur camshafts. Vtec Cams are set for top end, If you choose to activate vtec sooner on the b series engines ur most likely gonna lose alot more then u will gain. There is no need to allow extra air flow and long valve openings at low rpm because there is already sufficient flow without vtec. Now Vtec has kicked in and u cant get the right amount of air you need because of the cam situation.
04-23-2004, 09:30 PM
#8
3.0 BAR
Join Date: Mar 2003
Posts: 21,479
Re:HomeMade VteC ControlleR
VTEC=gay :P
lub, lub, lub, lub, lub, lub,.....
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lub, lub, lub, lub, lub, lub,.....
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04-23-2004, 09:44 PM
#9
Banned
Join Date: Aug 2003
Posts: 2,898
Re:HomeMade VteC ControlleR
Originally Posted by Dr.Boost
VTEC=gay :P
lub, lub, lub, lub, lub, lub,.....
lub, lub, lub, lub, lub, lub,.....
