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RPI Air ram scoop fitting
- JohnZ4greece
- Member
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- Joined: Thu Sep 27, 2007 12:16 am
Re: RPI Air ram scoop fitting
can i use it to 2.0lt z4???
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- Member
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- Location: ATHENS
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Re: RPI Air ram scoop fitting
WAIT JOHN ITS FIRST ME FOR My 2.5 MODEL XAXAXAXXAXAXAXAXAXXAXAA
- JohnZ4greece
- Member
- Posts: 90
- Joined: Thu Sep 27, 2007 12:16 am
Re: RPI Air ram scoop fitting
eimai mikroteros ara mporw na mathw prwtos
xa xa xa
xa xa xa
- gib6933
- Newbie
- Posts: 41
- Joined: Fri Feb 08, 2008 12:21 pm
- Location: Cheshire
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Re: RPI Air ram scoop fitting
Well I have had a go and made a prototype and was able to try it out on Monday , I was quite impressed it sounds different and iv have been doing 34mpg I am sure I have never seen that before (of course the mpg might just be voodoo).
I will keep playing around with it and make a final one, if any one is interested I could work out a cost and make some more.
jez
I will keep playing around with it and make a final one, if any one is interested I could work out a cost and make some more.
jez
X6 40d
TVR Chimaera
1916 Ford Indianapolis racer
1912 Model T
1964 Lotus 23b
1969 Lola t162
2003 Z4 2.5
TVR Chimaera
1916 Ford Indianapolis racer
1912 Model T
1964 Lotus 23b
1969 Lola t162
2003 Z4 2.5
- cj10jeeper
- Lifer
- Posts: 17846
- Joined: Fri Jun 22, 2007 11:50 am
- Location: Lichfield, England
Re: RPI Air ram scoop fitting
Jez - I love this kind of diy engineering mod. Can we see some pictures, unless you're going to patent it and make a fortune.
Jaguar F-Type 3.0 Supercharged V6 S, Stratus Grey, LSD, Active Exhaust, CF wheels, Performance brakes, Sports seats and mods ongoing
Gone but not forgotten Z4 3.0i SE Roadster ///M front, Red ///M leather seats, Aero sills
Gone but not forgotten Z4 3.0i SE Roadster ///M front, Red ///M leather seats, Aero sills
- gib6933
- Newbie
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- Joined: Fri Feb 08, 2008 12:21 pm
- Location: Cheshire
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Re: RPI Air ram scoop fitting
Its a bit dark outside at the moment but I will post some pix soon as I can.
I warn you it’s a bit ugly at the moment but the final one will have a better finish and be made of carbon fibre or a carbon fibre Kevlar hybrid instead of the GRP weave.
(If all goes well I will make one out of something really special a carbon/iron resin of my own design )
jez
I warn you it’s a bit ugly at the moment but the final one will have a better finish and be made of carbon fibre or a carbon fibre Kevlar hybrid instead of the GRP weave.
(If all goes well I will make one out of something really special a carbon/iron resin of my own design )
jez
X6 40d
TVR Chimaera
1916 Ford Indianapolis racer
1912 Model T
1964 Lotus 23b
1969 Lola t162
2003 Z4 2.5
TVR Chimaera
1916 Ford Indianapolis racer
1912 Model T
1964 Lotus 23b
1969 Lola t162
2003 Z4 2.5
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- Member
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- Joined: Tue Apr 15, 2008 5:17 pm
- Location: ATHENS
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Re: RPI Air ram scoop fitting
JohnZ4greece wrote:eimai mikroteros ara mporw na mathw prwtos
xa xa xa
i megaliteroi proigountai omws
- Ale_72
- Member
- Posts: 143
- Joined: Tue Jul 17, 2007 12:27 pm
- Location: Milan / Niederglatt :-)
Re: RPI Air ram scoop fitting
http://www.m5board.com/vbulletin/showth ... p?t=105408 (dyno tests on a M5)
BMW Z4 3.0i Steptronic
- Curtis
- Member
- Posts: 667
- Joined: Mon Jul 02, 2007 7:20 pm
- Location: Yatton
Re: RPI Air ram scoop fitting
It always amazes me how you can get power increases like that from a ramair system ( which only works when the car is travelling at speed and therefore forcing air into the intake, hence the name ramair ) while the car is stationary on a dyno. Maybe they were blowing air down the intake but thats hardly the same as real world figures or maybe that WAS the power increase from a stationary car and there's more to come when the car actually moves. Any thoughts?
- gib6933
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- Location: Cheshire
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Re: RPI Air ram scoop fitting
Your right there is no way you could measure it on a rolling road unless it was dyno in a wind tunnel (I have only ever seen one at lola) the only way is lap times and timed distances.
jez
jez
X6 40d
TVR Chimaera
1916 Ford Indianapolis racer
1912 Model T
1964 Lotus 23b
1969 Lola t162
2003 Z4 2.5
TVR Chimaera
1916 Ford Indianapolis racer
1912 Model T
1964 Lotus 23b
1969 Lola t162
2003 Z4 2.5
- ZetaTre
- Member
- Posts: 513
- Joined: Mon Mar 31, 2008 11:05 pm
- Location: San Diego County
Re: RPI Air ram scoop fitting
There actually is: there's several software you can hook up on the OBD plug and retreive live data, while driving.gib6933 wrote:Your right there is no way you could measure it on a rolling road unless it was dyno in a wind tunnel (I have only ever seen one at lola) the only way is lap times and timed distances.
jez
For example you can tast a before and after on the same road and check parameters such as MAF reading, intake air temperature, engine load, etc. You will not get an accurate HP number (not that dyno are accurate to begin with...) but you get an idea on if it's just a placebo effect (convincing yourself you get a positive ROI from you purchase) or there is some real perofrmance increase.
I personally think these will give you a far more accurate and intelligent picture of what's going on with the mod than a dyno
2003 Z4 2.5i
2004 X3 3.0i
2002 Ducati Monster S4
- Curtis
- Member
- Posts: 667
- Joined: Mon Jul 02, 2007 7:20 pm
- Location: Yatton
Re: RPI Air ram scoop fitting
Yes but that would be pure speculation on HP gain. They are showing a dyno graph with specific HP gains which could only have come from a dyno. The point I'm making is that you can't measure ramair gains while stationary.
- ZetaTre
- Member
- Posts: 513
- Joined: Mon Mar 31, 2008 11:05 pm
- Location: San Diego County
Re: RPI Air ram scoop fitting
Totally agree... Mine was just a comment on an alternative way to measure improvements, if any, in a more scientific and realistic way than a "tapet roulant". Quite honestly I didn't even go to the link...Curtis wrote:Yes but that would be pure speculation on HP gain. They are showing a dyno graph with specific HP gains which could only have come from a dyno. The point I'm making is that you can't measure ramair gains while stationary.
2003 Z4 2.5i
2004 X3 3.0i
2002 Ducati Monster S4
- Curtis
- Member
- Posts: 667
- Joined: Mon Jul 02, 2007 7:20 pm
- Location: Yatton
Re: RPI Air ram scoop fitting
I see what your saying however however the procedures your mentioning do not "measure improvements". Even live mapping ie tuning a car via the OBD2 while driving will not give you a "measure" of the improvements it just lets you see the parameters you have changed. You may feel a difference through the seat of your pants but you can't put a HP figure on that. The dyno is the only place where actual HP figures can be measured but it can't replicate such aspects as the ramair effect because the car is stationary and therefore there is no ramair effect. Ramair will of course increase with vehicle speed so even if they had forced air down the intake at a set rate it would not allow for the variation in airspeed under actual driving conditions. I think that any graph showing a power gain for a system that wasn't actualy functional at the time has to be taken with a pinch of salt.
- Mattt
- Member
- Posts: 726
- Joined: Wed May 28, 2008 9:00 pm
Re: RPI Air ram scoop fitting
Surely using a decent dyno fan will give you some indication? e.g. http://www.youtube.com/watch?v=eCZDodUAn8Y