Do you have a nasty dead spot between 4400-5200 rpm especially in 3rd and 4th gear? How did you remedy it?

 

my guess is w a vtec controller, i have that setup, but haven't driven it for a while cuz my cars in the shop so i coudln't tell u.

 

The only change I made was from old school DC 4-2-1 with tiny collector to DC JDM- now major flat spot, hmmm.

 

you can change your crossover point, or get a type-r ecu.

 

yea buy a vafc and change the x-over point to 5600 -- screamin

 

I talked to Jeff at IB today and he said the same thing.

I would like to hear the theory behind why changing to a JDM DC header would give me a flat spot at that RPM? Thats the only thing I changed.

I thought it was a fueling issue at first but everyone is saying raise the X-over.

What theory supports why a header would warrant the need for a change of X-over?

Still have the GSR intake manifold and want to keep it. I think Hondata is going to be my only alternative. It would be nice to throw in a factory ITR program but I think I would have a problem with secondary's on the GSR intake.

Any of you ECU programers have what I need as an option vs. Hondata?

 

no dead spot in rpms for me...i got a gsr w/ ctr cams, jdm 4-1, jdm itr ecu, skunk2 im.
header & ecu recently installed and was night & day.

hope this helps. best of luck

 

VAFC should fix the problem

 

I have a nasty dead spot there w/o R cams. My exhaust stinks like hell at and just after VTEC engagement so I know I'm running pig rich. Just need some fuel management.