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Velocity Stacks: Before You Buy
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07-18-2024, 08:25 PM | #23 |
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Also n52 has vacuum pump cause from factory it never made enough vacuum in the manifold
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07-29-2024, 02:23 PM | #24 |
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My own 3D printed velocity pipe bumper intake for the velocity stacks, sold a few already
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The Nightman1246.50 |
08-01-2024, 02:47 PM | #26 |
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Best I can say is that the tuning is taking longer then expected. Don’t think anyone is at a final tune yet as the problems are timing, smooth throttle response, better fuel economy
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08-01-2024, 05:28 PM | #27 |
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Never shared the dyno run I’ve done -
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E90 328xi 6MT | Intake Scoops | K&N + Charcoal Filter Delete | DIY Dinan 3in | 3.25in + 3.5in piping | N54 Manifold | MILVS | Ceramic Coated Headers | Secondary Cat Delete | Xdelete | 3.91 Diffs | 22RPD Tune
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The Nightman1246.50 |
08-01-2024, 05:34 PM | #28 |
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Beta tune not fully complete
Hitting a torque limiter Low timing 7 degrees off Not most power of out tune 83F or 30C outside air temp 2200ft -6% off Without MILVs 234rwhp / 194ftlb - mustang dyno 254rwhp / 207ftlb - dyno jet conversion
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E90 328xi 6MT | Intake Scoops | K&N + Charcoal Filter Delete | DIY Dinan 3in | 3.25in + 3.5in piping | N54 Manifold | MILVS | Ceramic Coated Headers | Secondary Cat Delete | Xdelete | 3.91 Diffs | 22RPD Tune
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The Nightman1246.50 StradaRedlands6578.50 |
08-04-2024, 12:21 PM | #30 |
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Thanks for the update. Impressive so far and sounds glorious
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08-04-2024, 10:07 PM | #31 |
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I’m not sure, if 22RPD gets solid velocity stacks tune, and these cams still use valvetronic then I assume it can be done
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08-30-2024, 04:59 PM | #32 |
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We have replaced the exhaust camshaft ledge due to scoring from being on track with less then FULL oil on digital dipstick. We had reduced timing, some exhaust scoring.
At the same time we installed MILVs from CobraMarty for increased lift And cleaned up the valve cover to redo my crinkle black valve cover. We are back on the roads with healthy engine, for more beta testing more.
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3PedalJake3453.50 |
09-02-2024, 07:36 PM | #33 |
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Good to hear. Any butt meter difference with MILVs?
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3PedalJake3453.50 chilledn52143.50 |
09-03-2024, 01:03 PM | #34 |
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butt meter has seen in increase of power and torque at almost every point in rev range
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E90 328xi 6MT | Intake Scoops | K&N + Charcoal Filter Delete | DIY Dinan 3in | 3.25in + 3.5in piping | N54 Manifold | MILVS | Ceramic Coated Headers | Secondary Cat Delete | Xdelete | 3.91 Diffs | 22RPD Tune
Last edited by chilledn52; 09-03-2024 at 04:53 PM.. |
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colorado.e9x3671.00 |
09-04-2024, 11:57 AM | #35 | |
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I think you were in contact with Bruno when he was testing? I have MILVs fitted at the moment but hope to move to upgraded cams from StageFP or BDS once they have been released/tested a bit more. |
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09-04-2024, 12:27 PM | #36 | |
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To my understanding, technically it’s just changing the position of the eccentric shaft so at a given rpm point, you have more valve lift.
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09-09-2024, 11:14 AM | #37 |
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MILVs on N54 manifold is WAY more noticeable then it was for me on velocity stacks.
On N54 manifold at this point cause not more much tuning needed, pretty much done on mine. I still have 2A87 exhaust mechanism so I do have to tear back into the car. If you plan on getting these velocity stacks, good healthy engine is required for sure.
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colorado.e9x3671.00 |
09-09-2024, 03:01 PM | #38 |
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Thanks for the info! Whats your thoughts on it so far compared to the N54 manifold?
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09-09-2024, 07:44 PM | #39 |
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gonna have to get readjusted to the n54 manifold with milvs now. trumpets are drone-y and higher fuel economy, doing lots of highway.
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colorado.e9x3671.00 |
09-11-2024, 01:09 PM | #40 |
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Economy or consumption? Did you run a filter? And plan for them to put a pendulum on the trumpets?
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09-11-2024, 01:15 PM | #41 | |
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3.91 diffs and over 3k isnt helping. running a K&N prefilter over the trumpets
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11-03-2024, 06:12 PM | #42 |
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So timing was off most likely due to the camshaft sprockets, it was pre recall but still went bad on me. With 94 + octane booster we hitting our target timing goals.
Fuel economy has been a lot better (cruise above 3k 17~mpg or 14~L/100km), maybe because of timing and fuel quality it was dumping more to compensate. I’ve been daily driving them now for over a week, been dead reliable for me, very happy now for what it makes. With MILVs now, and my previous dyno being calculated to dyno jet and fix for timing. Without MILVs was 261rwhp correct timing on Dyno jet With MILVs, assuming the same power curve to other manifolds. I’m assuming around 270rwhp I could dyno again now but it’s a 30 degree difference (now 0c or 32f) in temperature so I think I gotta wait for summer to make it fair.
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E90 328xi 6MT | Intake Scoops | K&N + Charcoal Filter Delete | DIY Dinan 3in | 3.25in + 3.5in piping | N54 Manifold | MILVS | Ceramic Coated Headers | Secondary Cat Delete | Xdelete | 3.91 Diffs | 22RPD Tune
Last edited by chilledn52; 11-04-2024 at 03:22 PM.. |
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AmuroRay2981.50 The Nightman1246.50 |
11-07-2024, 07:47 AM | #43 | |
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11-09-2024, 12:57 AM | #44 |
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Mustang Dyno we put down: 238HP 205TQ. Doing conversion to dynojet as everyone for N52 seems to measure Dyno we made 257.49RWHP 219.46RWHP.
Main things I can improve on, beginning there is a bump in torque that’s my clutch slipping, should be able to get some more torque for longer in the rev range when clutch is replaced. FBO with MILVs, besides stock resonator stock muffler so that has to be hurting some top end too. Still in very happy with these numbers. Winter Rims & Tires installed - heavier then summers Also it’s RWD Xdelete so spinning of a transfer case as well. +10c maybe outside
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E90 328xi 6MT | Intake Scoops | K&N + Charcoal Filter Delete | DIY Dinan 3in | 3.25in + 3.5in piping | N54 Manifold | MILVS | Ceramic Coated Headers | Secondary Cat Delete | Xdelete | 3.91 Diffs | 22RPD Tune
Last edited by chilledn52; 11-12-2024 at 06:00 PM.. |
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