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+1mm Modified Intake Lift Valvetronic Supports- 'MILVs' N52
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05-02-2017, 03:55 PM | #155 | |
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05-02-2017, 03:58 PM | #156 |
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3-stage manifold runner resonance, one of them anyway.
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05-02-2017, 04:21 PM | #157 |
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it's a DISA transition.
if you can imagine the single stage manifold, it's torque curve would follow more closely to the range of those "dips" than the bumps in torque the DISA stages give you. |
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05-02-2017, 05:36 PM | #158 |
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Awesome work cobramarty and everyone that contributed.
My two questions... Anyone with headers going to check this out and get a tune and Dyno? I wonder what the long term affects would he on the springs that these support? If any. |
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05-02-2017, 05:42 PM | #159 |
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Hey Bob at BPC,
A big thanks for testing and posting. You guys rock. I sent you another set of supports- 'Stage 2'. they add another 0.4-0.5mm lift. They have a second mod done, not just more of the first mod. |
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05-02-2017, 05:48 PM | #160 |
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05-03-2017, 05:14 AM | #162 | |
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3 Stage Intake PE Headers Valvetronic Support Mod, (+0.5-1.0mm intake valve lift) BPC Tune Might just be the combination for 250+whp. Last edited by CobraMarty; 05-04-2017 at 05:16 AM.. |
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05-03-2017, 11:28 AM | #163 |
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I may have an other test car.. customer with a 128i with our tune, 3 stage intake AA header & full exhaust. I would like to see what it would make with it, he's already making 245rwhp
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05-04-2017, 04:46 PM | #164 |
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Long story short, what do I need to do this. I have a cable and win kfp etc...
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05-04-2017, 04:53 PM | #165 |
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The ability to partially disassemble your valve train, insert some parts, and reassemble. Not trivial.
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05-05-2017, 08:03 AM | #166 | |
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Remove the valve cover, just like if you were replacing the VC gasket. One cylinder at a time, Rotate engine so cam lobe is pointing at about 1 o'clock position when viewed from the front Loosen top spring bolt, insert spacer, tighten Remove the support- 2 bolts, slide out stock support and replace with modified support Loosen top spring bolt, remove spacer, tighten. Repeat. Replace VC gasket if needed. Replace valve cover. Box up old supports and return. Programming, that's BPC's tune. Support and Valvetrain- |
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05-05-2017, 08:12 AM | #167 |
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05-05-2017, 08:19 AM | #168 | |
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05-05-2017, 09:08 AM | #169 |
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I thought headers, 3si, and a kn, with Bpc tune should already be at 250hp ?? That's what they had shown, I would imagine with this mod and tune should be up to 260-270 rwhp with out mad delete. So with the delete, and a high flow muffler, we should be 290 at the wheels..Does this sound right to anyone else??
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05-05-2017, 09:15 AM | #170 | |
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05-05-2017, 12:30 PM | #171 | |
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2011 E90 328i 6MT, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+2XBurns, AKG 75D eng/trans, Al/Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors+cooling, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 6pt cage+FIA, Braille, RT DL1Mk3
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05-05-2017, 06:53 PM | #172 |
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I saw dynos from AA and Bpc with 250rwhp that wer put out with a 3si, headers and a tune, a 330 should be 220 or so at the wheels, with headers, tune, intake, and this mod. Has any one else seen these? That's what I was figuring, I know with the flash tunes, n52s are sitting at the 225 mark, same as a330 stock. I would have thought this mod was the over the 300 mark. No harm.
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05-05-2017, 07:00 PM | #174 | |
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My 328i with 3-stage, headers, and a tune, albeit a shitty AA tune, produces 218rwhp, an increase over stock baseline of 37hp, iirc. Haven't dyno'ed it with the BPC tune or with that and a bored TB or with the TB and an Alpha-N tune. And eventually, it would appear, with cobramarty's spacers. I'd be surprised if the estimated crank hp manages to get close to 290hp, maybe 300hp but I kinda doubt it.
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05-05-2017, 07:05 PM | #175 |
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That'd be awesome but it's not going to happen without internal changes to the engine, including cams, higher compression and octane, head porting and polishing and unshrouding, etc., race exhaust (already have that on the car...), and possibly blueprinting and balancing. Might not even be streetable at that point as I'm guessing the idle will have to be elevated a bit due to the cams and it may not be possible without costly head machining to get rid of the valvetronic system and go to the N54 cams, VANOS, timing chain, etc. which means a mechanically operated TB maybe although I'm told it isn't necessary.
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2011 E90 328i 6MT, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+2XBurns, AKG 75D eng/trans, Al/Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors+cooling, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 6pt cage+FIA, Braille, RT DL1Mk3
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