Over-rad air intakes
Over-rad air intakes
Author
Discussion

hsv_sc

Original Poster:

175 posts

212 months

Thursday 25th September 2008
quotequote all
i've seen these advertised on a few sites, wondered if anyone's seen one for a supercharged lump instead of NA?

ringram

14,701 posts

271 months

Thursday 25th September 2008
quotequote all
Yep, saw a guy with a PWR (maggie/harrop) style with one fitted in Oz. I think there are pics on ls1.com.au but god knows where now.
Best to email a few Oz shops and see what fits with what. Harrop might even be able to tell you etc.

Its going to boil down to which SC sits the throttle body in the closest place to stock and not off to the side etc.

hsv_sc

Original Poster:

175 posts

212 months

Thursday 25th September 2008
quotequote all
hmm.. my SC's air intake is at the rear of the unit, in front of the coolant tank.. not sure if they make these over-rad intakes for that setup?... will have a hunt around the web.

hsv_sc

Original Poster:

175 posts

212 months

Thursday 25th September 2008
quotequote all
couldnt find this kind of intake for a centrifugal sc setup.. anyone got info or links?

ringram

14,701 posts

271 months

Thursday 25th September 2008
quotequote all
Yeah not seen one for that setup, its not really suitable.

hsv_sc

Original Poster:

175 posts

212 months

Thursday 25th September 2008
quotequote all
ringram said:
Yeah not seen one for that setup, its not really suitable.
yeah my thinking too.. but am looking for something that doesnt involve hanging the filter at the bottom of the bumper...

MyM8V8

9,468 posts

218 months

Friday 26th September 2008
quotequote all
hsv_sc said:
ringram said:
Yeah not seen one for that setup, its not really suitable.
yeah my thinking too.. but am looking for something that doesnt involve hanging the filter at the bottom of the bumper...
I was wondering whether it's possible to get a duct under the nearside headlamp and through the bumper???

I know it would look strange but.......?

MyM8V8

9,468 posts

218 months

Friday 26th September 2008
quotequote all
How about this one. Although I'm not sure how it would handle engine torque twist. Cost AU$700 shipped to UK.







If it works as good as it looks? Although HP per dollar ( plus import &VAT) what's the bang for the buck looking like with a mafless Rich?

Edited by MyM8V8 on Friday 26th September 17:31

Bonnie and Clyde

11,701 posts

215 months

Friday 26th September 2008
quotequote all
Wow that looks great. Isn't that what Rich has?

MyM8V8

9,468 posts

218 months

Friday 26th September 2008
quotequote all
Bonnie and Clyde said:
Wow that looks great. Isn't that what Rich has?
Not sure. He's about, so we'll know soooon.

Bonnie and Clyde

11,701 posts

215 months

Friday 26th September 2008
quotequote all
Doesn't this maffless thingy eliminate the need for a super charger? Or can you have both? If not why not?

Stigmundfreud

22,454 posts

233 months

Friday 26th September 2008
quotequote all
Bonnie and Clyde said:
Doesn't this maffless thingy eliminate the need for a super charger? Or can you have both? If not why not?
the MAF is an air flow sensor, your car uses it to measure the airflow and help to determine the amount of fuel required amongst other things.

Removing the MAF forces you to use the VE table for fuel look up based on manifold pressure instead of a combination when using the MAF. Some think its an advantage and if you run in a constant climate, altitude you can see the point. Also its one less thing to go wrong if you remove it and when tuning its far easier to tune without it or tune to not have one.

I went back to running with a MAF as it also has its advantages but not to ultimate power. The MAF is not a supercharger its just an 80 quid sensor that sits in the intake track. It isnt a performance item though you can buy bigger more accurate ones that claim increases of power. If you remove it completely it helps with clearing the airflow so its less obstruction to the intake.


ringram

14,701 posts

271 months

Friday 26th September 2008
quotequote all
Mine is the Russo one. Looks a bit more basic than that. But supposed to be slightly better.
Yes lots of arguments maf v mafless. Its easier to tune with a maf anyway. But once you hit serious mods you are almost forced mafless anyway due to its limitations.
Slightly better throttle response and allows for a clearer shorter intake tract without it. Hence why otrcai intakes are almost always mafless.

Ive been mafless almost from the word go. Well drove my vxr8 with the maf until I got my otrcai. My old R8 Clubsport had the maf removed too. For a no holds barred NA engine mafless is the way to go. Maf's better accuracy is more to do with it measuring airmass better at different climates etc. BUT there are loads of tables in the ECU for pressure, temp etc which suggests if your mafless is no good you have not tuned all the tables properly smile

The Old GTS-R HSV's in the UK are also all Mafless. Im not sure but the W427 looks mafless too.

ringram

14,701 posts

271 months

Friday 26th September 2008
quotequote all
Here is the W427 looks like no maf unless its built into the otrcai intake.


Bonnie and Clyde

11,701 posts

215 months

Friday 26th September 2008
quotequote all
ringram said:
Mine is the Russo one. Looks a bit more basic than that. But supposed to be slightly better.
Yes lots of arguments maf v mafless. Its easier to tune with a maf anyway. But once you hit serious mods you are almost forced mafless anyway due to its limitations.
Slightly better throttle response and allows for a clearer shorter intake tract without it. Hence why otrcai intakes are almost always mafless.

Ive been mafless almost from the word go. Well drove my vxr8 with the maf until I got my otrcai. My old R8 Clubsport had the maf removed too. For a no holds barred NA engine mafless is the way to go. Maf's better accuracy is more to do with it measuring airmass better at different climates etc. BUT there are loads of tables in the ECU for pressure, temp etc which suggests if your mafless is no good you have not tuned all the tables properly

The Old GTS-R HSV's in the UK are also all Mafless. Im not sure but the W427 looks mafless too.



Whats otrcai? and whats NA

Bonnie and Clyde

11,701 posts

215 months

Friday 26th September 2008
quotequote all
Stigmundfreud said:
Bonnie and Clyde said:
Doesn't this maffless thingy eliminate the need for a super charger? Or can you have both? If not why not?


the MAF is an air flow sensor, your car uses it to measure the airflow and help to determine the amount of fuel required amongst other things.

Removing the MAF forces you to use the VE table for fuel look up based on manifold pressure instead of a combination when using the MAF. Some think its an advantage and if you run in a constant climate, altitude you can see the point. Also its one less thing to go wrong if you remove it and when tuning its far easier to tune without it or tune to not have one.

I went back to running with a MAF as it also has its advantages but not to ultimate power. The MAF is not a supercharger its just an 80 quid sensor that sits in the intake track. It isnt a performance item though you can buy bigger more accurate ones that claim increases of power. If you remove it completely it helps with clearing the airflow so its less obstruction to the intake.




Whats the VE table?

ringram

14,701 posts

271 months

Friday 26th September 2008
quotequote all
You need to use google more mate smile

otrcai = Over the Radiator Cold Air Intake (Like the intake in the picture above)

VE table = Volumetric Efficiency table a basic key table in engine management systems which maps out engine efficiency over the operating range of the engine. Basically use to calculate fuel requirements.

Bonnie and Clyde

11,701 posts

215 months

Friday 26th September 2008
quotequote all
ringram said:
You need to use google more mate

otrcai = Over the Radiator Cold Air Intake (Like the intake in the picture above)

VE table = Volumetric Efficiency table a basic key table in engine management systems which maps out engine efficiency over the operating range of the engine. Basically use to calculate fuel requirements.


Thankyou::

monkfish1

12,233 posts

247 months

Friday 26th September 2008
quotequote all
ringram said:
Here is the W427 looks like no maf unless its built into the otrcai intake.



Looks like a Bosch style MAF in that to me Richard.

ringram

14,701 posts

271 months

Friday 26th September 2008
quotequote all
Built into the back of the intake you mean before the ribbed bit.. (ie) where the connector is..? Yeah looks like there are more than the 2 IAT wires there as well you could be right..