Originally posted by 02CavyZ24
why you say a 4-1 would be better? i had a 4-1 and was ruined from it hitting things. when you look at all the big time headers like comptech, spoon, and toda all of their headers on 4-2-1.
Fuck skunk2 manifolds for b16/b18cr heads.
Aebs makes a manifold that is just like it or better for $150
Contact guy at A&E or any local or online aebs dizzy.
Your dc 4-2-1 w/ a 2 1/4 flange & your 2 1/4 exhaust is slowing you down.
Try getting your self a decent 4-1 header w/ a 2 1/2 inch collector along with a 2 1/2 exhaust.
IMO 290 cc injectors are not needed for your application.
Why do I say this? I have run factory bseries injectors in motors with 11.1:1 & 12.1:1 areas (ctr pistons etc) w/ no problems.
Also your TB is probably not port mached to your intake manifold, hence you are probably loosing power here. You always want to make sure your TB matches your intake manifold inlet.
(Aebs intake manifolds are 65mm inlet)
Skunk2 stage 2's would nice but they would require a valvetrain upgrade as stated before, unless you want to shift at 8200 rpms :-/
I personally would go with an exhaust system upgrade along with portmaching my intake manifold to my tb.
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Manufacturer / Intake / Exhaust
EF-1 m24 cams 12.1 mm, duration - 258 @1mm 12.1 mm, duration - 258 @1mm
Toda Spec A 11.6 mm, duration - 250 @ 1mm 11.2mm, duration - 240 @ 1mm
Toda Spec B 12 mm,duration - 255 @ 1mm 12 mm, duration - 245 @ 1mm
Toda Spec C 12.5 mm,duration - 255 @ 1mm 12.5 mm, duration - 255 @ 1mm
Jun Type 1 10.9 mm, duration - 265.3 @ 1mm 10.0 mm, duration - 268 @ 1mm
Jun Type 2 12.0 mm, duration - 266.6 @ 1mm 10.9 mm, duration - 265.3 @ 1mm
Jun Type 3 12.0 mm, duration - 265.3 @ 1mm 11.5 mm, duration - 265.3 @ 1mm
Spoon Sports 11.53 mm, duration - 256 @ 1mm 11.13 mm, duration - 245 @ 1mm
Skunk 2 stage1 11.58 mm, duration 252 @ 1mm 10.9 mm, duration 249 @ 1mm
Skunk2 stage 2 12.3 mm, duration 266 @ 1mm 11.8 mm, duration 262 @ 1mm
Skunk2 stage 3 12.8 mm, duration 273 @ 1mm 11.5 mm, duration 273 @ 1mm
Crower 63400 10.69 mm, duration - 244 @ 1mm 9.83 mm, duration - 231 @ 1mm
Crower 63401 11.38 mm, duration - 249 @ 1mm 10.54 mm, duration - 240 @ 1mm
Crower 63401T 11.81 mm, duration - 240 @ 1mm 11.30 mm, duration - 237 @ 1mm
Crower 63402 11.84 mm, duration - 258 @ 1mm 11.84 mm, duration - 251 @ 1mm
Crower 63402A 11.84 mm, duration - 246 @ 1mm 11.81 mm, duration - 239 @ 1mm
Crower 63403 12.04 mm, duration - 267 @ 1mm 11.84 mm, duration - 257 @ 1mm
Integra Type R 11.5 mm, duration - 240 @ 1mm 10.5 mm, duration - 235 @ 1mm
Civic Type R 11.5mm, duration - 243 @ 1mm 10.5 mm, duration - 235 @ 1mm