Forced admission for all Z4 e85/e86 (all engines)

Gazzzz said:
Hey, thank you for your interest :thumbsup:
Yes of course it is possible to order !

A quick video to show you something.. cool with this scoop :evil:

[youtube]D1Cid0ZOsjs[/youtube]
Click to expand...

Umm :?

Come on fella you have blinded us with science about the development of this project but steadfastly refuse to post any performance data. Some cloth being unsurprisingly sucked in to an inlet is no substitute for high speed run data showing that this mod does anything on an unmapped car as claimed.
 
Ewazix said:
Come on fella you have blinded us with science about the development of this project but steadfastly refuse to post any performance data. Some cloth being unsurprisingly sucked in to an inlet is no substitute for high speed run data showing that this mod does anything on an unmapped car as claimed.
Click to expand...

I've followed Gazzzz's posts with interest and admire the thought that has gone into the development of this item.
Not an easy thing to do I'm sure. However nowhere have we read any claims or assertions that fitting this to our cars will increase either performance or power.
The concept that getting more air into the combustion chamber in a N/A engine will increase both the above has been around for generations, and in fact owners of cars fitted with the RPI scoop report increases to both the aural sensation and the "butt" dynometer. The producers of the item report a 7BHP increase, without much to substantiate this, other than a dyno graph.
Its obvious Gazzzz is a shoestring, not a commercial operation, in the fullness of time we may be able to view
some info that you think is necessary viewing prior to purchase. But not at this time
Hats off I say for the micro production of a great product :thumbsup:
 
BTZ461 said:
Ewazix said:
Come on fella you have blinded us with science about the development of this project but steadfastly refuse to post any performance data. Some cloth being unsurprisingly sucked in to an inlet is no substitute for high speed run data showing that this mod does anything on an unmapped car as claimed.
Click to expand...

I've followed Gazzzz's posts with interest and admire the thought that has gone into the development of this item.
Not an easy thing to do I'm sure. However nowhere have we read any claims or assertions that fitting this to our cars will increase either performance or power.
The concept that getting more air into the combustion chamber in a N/A engine will increase both the above has been around for generations, and in fact owners of cars fitted with the RPI scoop report increases to both the aural sensation and the "butt" dynometer. The producers of the item report a 7BHP increase, without much to substantiate this, other than a dyno graph.
Its obvious Gazzzz is a shoestring, not a commercial operation, in the fullness of time we may be able to view
some info that you think is necessary viewing prior to purchase. But not at this time
Hats off I say for the micro production of a great product :thumbsup:
Click to expand...
All good stuff, but potential 'gains' and plans for dyno and high speed run data have been discussed regularly since page 1.

I've been complimentary and a big supporter of the project, also engaging in some good humoured banter with the Gazzzz as well, but along with some others have always expressed doubts that the mod could do anything worthwhile on a standard map. Gazzzz said it could as he thought the car had sufficient latitude in the map to adjust and use any additional air-flow. All agreed the proof concept could only be decided with real-time data at higher speeds and options were discussed. It's just never happened which is a shame as a lot of us would love to know the answer and odd as several people are apparently running it. I love the enthusiasm and work that Gazzzz has done and genuinely hope the project successfully produces results. :thumbsup:
 
Obviously it would be great if Gazzzz posted some data logs, but probably better if the people who have bought one did their own testing. Two have posted to this thread and I imagine there are more. Data logging software and an OBDII cable are cheap, so it's really only an investment in time (would have to revert to stock to get baseline logs).

I'll be testing one when I get it (waiting for the rain guard before I order as shipping to Australia will be pretty steep and would prefer not to pay it twice) and I have plenty of data logs from when the car was stock to various stages of exhaust (now running end-to-end Supersprint but also have data logs from when it was only V1 headers and S-pipe) and intake (Eventuri) and 6 different DME tunes.

You probably won't be able to buy these in five years' time, so if you're planning on keeping your car for the long-term (like I am), I would prefer to get one now and test it. Knowing it doesn't provide a benefit is better than be regretting not having the option down the track.
 
Sorry for my absence,
yes available but with a few weeks delay because of the difficulties encountered by printers in obtaining somos for printing it. :x
 
Gazzzz said:
Sorry for my absence,
yes available but with a few weeks delay because of the difficulties encountered by printers in obtaining somos for printing it. :x
Click to expand...

I’m also interested to buy one of these. Very interesting project. Principles seem sound and it will be great to try this out. Are you having any more made? If so, how do I order? Looks like you have a nice little business now
 
[ref]Gazzzz[/ref], hope all is well and you can get some printed soon. You'll be my Santa if I can get my hands on it for Christmas! :D
 
I should be receiving this part later this week. I won't be able to do any data logging until the weather warms up (I don't drive my car in the winter time).

I figured I can try and outline how I'd like to approach testing, assuming others are interested in some of the expected results.

I have in my possession both an Eventuri intake, as well as the stock intake manifold. I currently have a stock tune using the MAF. Everything else on the car is currently stock.

I plan on data logging the following conditions:

1) eventuri with eventuri 'scoop'
2) stock intake with eventuri 'scoop'
3) stock intake without eventuri 'scoop' (so completely oem setup)
4) stock intake with this new ram scoop

I don't plan on using the new ram scoop with the eventuri intake because I don't want to create additional positive pressure under the hood beyond what I have at present. Also, the stock intake has the benefit of being a closed intake system.

I am open to suggestions in terms of what and how to log the data under these different conditions based on what folks are most interested in seeing.

In terms of what I'm hoping/expect to find, is:

- increased airflow and VE at WOT
- Improved throttle response on tip in, since I'm assuming manifold pressure should go less negative (absolute pressure) while at speed
- throttle to be more closed when cruising at highway speeds such that fuel consumption remains the same.

The big question is in terms of how much ram affect is seen under differnt conditions. If, at 70 mph there's a 1% increase in static pressure in the plenum, that would mean ~2-3 whp near the top of second gear. If it grows to 2% at 100 mph, that'd be about 5-6 whp.
 
Very interested in hearing how you go with this!

How did you get in touch with Gaaaz to order your scoop?

Depending on what parameters your logging solution can do, there are a few that would be interesting (MAF being the main one but IAT could be interesting too).

A few third gear runs from low revs to redline would be great. I was surprised how much difference my Eventuri, x-pipe and muffler upgrades made to third gear runs despite only showing 6hp on a dyno.

Also, what is your concern about positive pressure from combining the scoop with your Eventuri?


Z4MCoupe86 said:
I should be receiving this part later this week. I won't be able to do any data logging until the weather warms up (I don't drive my car in the winter time).

I figured I can try and outline how I'd like to approach testing, assuming others are interested in some of the expected results.

I have in my possession both an Eventuri intake, as well as the stock intake manifold. I currently have a stock tune using the MAF. Everything else on the car is currently stock.

I plan on data logging the following conditions:

1) eventuri with eventuri 'scoop'
2) stock intake with eventuri 'scoop'
3) stock intake without eventuri 'scoop' (so completely oem setup)
4) stock intake with this new ram scoop

I don't plan on using the new ram scoop with the eventuri intake because I don't want to create additional positive pressure under the hood beyond what I have at present. Also, the stock intake has the benefit of being a closed intake system.

I am open to suggestions in terms of what and how to log the data under these different conditions based on what folks are most interested in seeing.

In terms of what I'm hoping/expect to find, is:

- increased airflow and VE at WOT
- Improved throttle response on tip in, since I'm assuming manifold pressure should go less negative (absolute pressure) while at speed
- throttle to be more closed when cruising at highway speeds such that fuel consumption remains the same.

The big question is in terms of how much ram affect is seen under differnt conditions. If, at 70 mph there's a 1% increase in static pressure in the plenum, that would mean ~2-3 whp near the top of second gear. If it grows to 2% at 100 mph, that'd be about 5-6 whp.
Click to expand...
 
My concern is that at high speeds I end up generating even more lift on the front end than I do today (net increase around localized gradient emanating from the hood).

I was able to coordinate procurement after we exchanged contact info via PM.

Would be helpful if someone could plot a third gear run with the eventuri or oem intake so that, as I do it, can compare as a control. Check MAF and VE, normalized for iat and altitude. I have a us spec z4m.

///MBan said:
Very interested in hearing how you go with this!

How did you get in touch with Gaaaz to order your scoop?

Depending on what parameters your logging solution can do, there are a few that would be interesting (MAF being the main one but IAT could be interesting too).

A few third gear runs from low revs to redline would be great. I was surprised how much difference my Eventuri, x-pipe and muffler upgrades made to third gear runs despite only showing 6hp on a dyno.

Also, what is your concern about positive pressure from combining the scoop with your Eventuri?
Click to expand...
 
Z4MCoupe86 said:
My concern is that at high speeds I end up generating even more lift on the front end than I do today (net increase around localized gradient emanating from the hood).

I was able to coordinate procurement after we exchanged contact info via PM.

Would be helpful if someone could plot a third gear run with the eventuri or oem intake so that, as I do it, can compare as a control. Check MAF and VE, normalized for iat and altitude. I have a us spec z4m.
Click to expand...

Thanks. Gaaaz has been a bit quiet on here for a while, so it's good to know he is still contactable.

I hadn't thought about more lift resulting from the scoop. I suppose this only relevant for really high speeds (i.e. 100mph+)?

I have a heap of logged third gear runs (stock as well as with Eventuri plus exhaust mods) but my car is a Euro spec, so not helpful.
 
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