BC3+ Camshafts. Lost 15% power @ vtec
Thread Starter
Junior Member
Joined: May 2007
Posts: 47
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From: Sundbyberg, Stockholm, Sweden
I've just installed in some buddy club spec 3+ in my car. but when vtec poppes in nothing realy happens.. my car pulls better without vtec 
i've been to my tuning guy and he told me that i have to degree my cams..
right now we have removed like 15% fuel at the top from before when i used the original cams.
how about you? did you degree your cams? or is something else wrong?

i've been to my tuning guy and he told me that i have to degree my cams..
right now we have removed like 15% fuel at the top from before when i used the original cams.
how about you? did you degree your cams? or is something else wrong?
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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FredrikL »</TD></TR><TR><TD CLASS="quote">right now we have removed like 15% fuel at the top from before when i used the original cams.</TD></TR></TABLE>
what cams did u have in the motor b4 that required u to remove 15% fuel up top? or maybe i should ask, what program where u running b4?
Modified by Rollo Lawson at 3:13 PM 6/7/2008
what cams did u have in the motor b4 that required u to remove 15% fuel up top? or maybe i should ask, what program where u running b4?
Modified by Rollo Lawson at 3:13 PM 6/7/2008
Thread Starter
Junior Member
Joined: May 2007
Posts: 47
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From: Sundbyberg, Stockholm, Sweden
before Honda OEM B16A2 camshafts..
but with these BC3+ we had to remove 15% of fuel in vtec but add about 10% before vtec. Something must be wrong?
running with crome same as before.
but with these BC3+ we had to remove 15% of fuel in vtec but add about 10% before vtec. Something must be wrong?
running with crome same as before.
Thread Starter
Junior Member
Joined: May 2007
Posts: 47
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From: Sundbyberg, Stockholm, Sweden
Before tuning i was running rich according to the A/F meter.. we had to remove fuel to make it run like it should. but when we remove fuel we remove effect right? its strange..
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe »</TD></TR><TR><TD CLASS="quote">It sounds like one of your cams may be off by a full tooth.</TD></TR></TABLE>
Changing cams from stock to a BC3 AND leaning out vtec and you can't feel it on the butt dyno even? Something's wrong.
Changing cams from stock to a BC3 AND leaning out vtec and you can't feel it on the butt dyno even? Something's wrong.
Thread Starter
Junior Member
Joined: May 2007
Posts: 47
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From: Sundbyberg, Stockholm, Sweden
No only cams was installed..
spec:
Skunk2 IM Pro series
Comptech 4-2-1 tig
2,25" catback
JR 3" filter
im going to check the timing belt/crank today so i didnt missed something.
spec:
Skunk2 IM Pro series
Comptech 4-2-1 tig
2,25" catback
JR 3" filter
im going to check the timing belt/crank today so i didnt missed something.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FredrikL »</TD></TR><TR><TD CLASS="quote">No only cams was installed..
spec:
Skunk2 IM Pro series
Comptech 4-2-1 tig
2,25" catback
JR 3" filter
im going to check the timing belt/crank today so i didnt missed something.
</TD></TR></TABLE>
Did you change valve springs when you fitted the cams or are you still running the B16a ones ?
Regards Dyno Dave
spec:
Skunk2 IM Pro series
Comptech 4-2-1 tig
2,25" catback
JR 3" filter
im going to check the timing belt/crank today so i didnt missed something.
</TD></TR></TABLE>
Did you change valve springs when you fitted the cams or are you still running the B16a ones ?
Regards Dyno Dave
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FredrikL »</TD></TR><TR><TD CLASS="quote">everything is set at zer0.. dont get it..
</TD></TR></TABLE>
Why didn't your tuner make adjustment to the cam gears? I don't know, like b19coupe said, your timing may be off by a tooth, cause when I installed my BC3's even before the tune the car pulled great both before and after vtec x-over, which was only set to 5900 rpm on my car.
</TD></TR></TABLE>Why didn't your tuner make adjustment to the cam gears? I don't know, like b19coupe said, your timing may be off by a tooth, cause when I installed my BC3's even before the tune the car pulled great both before and after vtec x-over, which was only set to 5900 rpm on my car.





