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04-30-2018, 07:33 AM | #23 |
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The ONLY real reason that I personally would do this is........... because when I open my Z4M hood to show off the BMW Motorsports motor, I can point to the CF Motorsports intake and tell some very cool bullshit BMW Motorsports stories that I will totally fabricate and somehow include my own personal racing experiences (which I have none) but I will come off totally Motorsports-ish.
And girls are attracted to carbon fibre stuff.......... just like they are to diamonds. Yeah, that's the tickety. |
05-01-2018, 12:31 AM | #24 | |
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05-22-2018, 08:04 PM | #25 |
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I have Evolve CSL airbox installed with Alpha N tune. What I noticed is the acceleration is more responsive. HP gain is there if you have a Euro setup on the exhaust side. The installed is not complicated but we do need to modified a few things for NA Z4Ms. There are few have SES 2FDA fault code. Evolve provided a final flash to turn that off. I wasn't happy with the workaround but it is difficult for a company to figure out why few have issue out of many using the same software. I finally fixed the 2FDA fault this passed weekend but need more seat time to confirm.
PCV hose need, the larger hose on top, needs modification. The one Evolve supplied is not the same. OEM hose is not long enough to reach the airbox fitting. Here is a better picture of the connection. We need to splice MAF to use IAT. Overall, I am very happy with this mod. The intake is very distinct. |
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05-23-2018, 10:06 AM | #26 |
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is that the normal position of your IAT probe? normally is in the main chamber.
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05-23-2018, 12:19 PM | #27 | |
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http://m3support.net/thread/200/e46-...r-relocate-s54 |
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05-25-2018, 09:11 AM | #28 | |
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05-25-2018, 09:17 AM | #29 |
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Seems like I've read about a lot of Evolve tune issues over the years (not being able to heel-toe, stuttering/low RPM idle) -- any consensus on which tune is the best available (zero issues)?
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05-25-2018, 09:25 AM | #30 |
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Also, so my understanding is correct, the Evolve box is the only "z4m specific" unit available that reaches to the slam panel (i.e. doesn't suck in air from the hot engine bay)?
Anybody have any empirical evidence to suggest this makes a difference? There's a 2X price discrepancy between the Evolve and Karbonius...
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///M Coupe - Volk TE37's 19x10.5R +22 19x8.5F +30 | KW V3 w/ Clubsport rear springs | RPi exhaust | Autosolutions SSK | RE transmission mounts | RE RSM's | Vibra-Technics engine mounts | RPi scoop | RPi skid plates | Tekarbon spoiler | Apex wheel studs | Blox burnt titanium lug nuts | UUC Front 27mm Swaybarbarian | Status Gruppe adjustable front links | EAS Blacked out kidneys | Full Beisan Vanos Refresh
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05-25-2018, 09:35 AM | #31 | |
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05-25-2018, 04:09 PM | #32 | |
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Also one other factor that I have decided to go with Karbonius was that it can be easily resold to M3 cars except the Z4M's. Price was my last concern since that motor costs a lot... |
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05-25-2018, 05:49 PM | #33 | |
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///M Coupe - Volk TE37's 19x10.5R +22 19x8.5F +30 | KW V3 w/ Clubsport rear springs | RPi exhaust | Autosolutions SSK | RE transmission mounts | RE RSM's | Vibra-Technics engine mounts | RPi scoop | RPi skid plates | Tekarbon spoiler | Apex wheel studs | Blox burnt titanium lug nuts | UUC Front 27mm Swaybarbarian | Status Gruppe adjustable front links | EAS Blacked out kidneys | Full Beisan Vanos Refresh
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05-26-2018, 08:22 AM | #34 |
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to be totally honest, those snorkels going down and connecting up to your OEM Z4M intake hole, youll be getting about 1/8th of the air that this intake can handle and pretty much useless in that regard. have you actually seen the size of the oem intake hole? its super tiny. Sure it will be cold air, but that's about it, youll be strangling the intake.
My next project is to provide a good air intake for the snorkel.
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05-26-2018, 01:26 PM | #35 |
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05-26-2018, 01:42 PM | #36 | |
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I guess if we find a way to supply more air to this motor the results will be Epic. Since this is my next project too, would you like to join our forces? |
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05-26-2018, 07:03 PM | #37 | ||
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05-27-2018, 02:28 PM | #38 | |
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I am sure that Vanne can help a lot on this project with his valuable feedback since he is much more knowledgable about the car than me. Last edited by FD3S; 05-27-2018 at 02:41 PM.. |
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05-28-2018, 11:20 AM | #39 | |
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Mine has dynoed over 380bhp on one I know to be fairly accurate so I think to say using that intake is useless is slightly misguided I'd say. Probably also worth noting that a lot of the e46 m3 race cars with carbon airbox route directly to the box from one of the headlights, a not dissimilar size to the z4 slam panel intake. Last edited by MOTK; 05-28-2018 at 11:34 AM.. |
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05-31-2018, 12:50 AM | #40 |
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thanks for the pics MOTK, , i appreciate them, see the stock z4m intake size that comes through the nose wall, It's about a 1/3 of that size of the headlight intake in your picture.
And that's not even talking about the 90 degree corners it takes as it goes from the scoop (if you even have a scoop) to the exit through the the nose wall. I have some pics somewhere I should dig up. That headlight intake is awesome, and along the lines of what I would like to develop for our cars I already have sourced an old headlight which i will use as a mould. but sadly this will take time as work is owning my butt atm. I also have a nice carbon tube which i hope to mate with the headlight... Btw, the OEM CSL snork flap is closed only at idle/below 3k rpm, and yeah oem Z4 air hole at that rpm that will provide enough flow at this stage, when that flap opens, it's a whole different ball game. the flap is there predominantly for noise. Once it opens, it's there to let as much air in as possible. (Within reason of course) Edit: not meaning to say its useless, just less than optimal, and if your getting one of these intakes, i would imagine your going with optimal, otherwise you might as well have stayed with your OEM intake, which as FD3S correctly pointed out is very nicely optimised by the BMW M factory to provide an excellent intake source for the MAF requirements of those maps, which our CSL intakes don't have. Last edited by Vanne; 05-31-2018 at 01:32 AM.. |
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05-31-2018, 04:18 PM | #41 | |
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06-01-2018, 06:22 AM | #42 | ||||
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In any case what I was trying to say is that the initial entry size of the hole is not that important, indeed when the car was last on the dyno and made 383bhp it still had the restrictive oem scoop rather than the rpi I have now, the tuner was clear that there was no issue with enough air flowing to the box.. I've noticed no difference since fitting the rpi unsurprisingly to me. Quote:
As I said though I am no flow dynamisist, I'd love to know the calculations you used for this statement...? Quote:
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As I'm not sure if that's possible I have concentrated on what I know to be important for getting alpha-n to work well which is to have a good supply of cold air and making sure the IAT probe reports this air temperature accurately (i.e. not suffering from any heatsoak to give false readings for the table). I look forward to seeing your headlight/carbon tube mod and the results you see from it...
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06-02-2018, 01:56 AM | #43 |
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Bumper? Not talking about the CSL bumper hole intake, I am talking about the headlight intake you posted vs our tiny oem intake.
The e46 CSL bumper intake, is pretty much on par with our oem intake hole. Oh and even the CSL bumper hole intake doesn't do the 90 degree corner flow. Not sure what your looking at, but it's not chalk and cheese, the holes were talking about are about 30 percent compared to the headlight hole intake that you posted, that's what I was and have been referring to all along. Nothing to do with the CSL placement of the iat sensor, thats a completely different subject. Please post up a picture of the size of your snorkel where it connects up to the OEM Z4 intake hole. I think I made a reference to that when I posted up the" how to" install the CSL intake on the Z4. Flow dynamics? Nfi, but just looking at the restrictions the OEM intake hole gives, doesn't look to me that it flows that nicely. Please take a look at any of the race prepped z4m motor sport cars, and have a look at how they have the air intakes set. They pretty much cover the WHOLE frontal area. |
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06-02-2018, 02:17 PM | #44 |
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