6.0 VXR MAF diameter and Filter box diameter
Discussion
Can anyone confirm the internal ID of the stock MAF and the ID of the stock filter box also?
I think MAF is 85-88mm
Biting the bullet and installing a CAI, two options
Option 1
Replace pipe from TB to Stock filter box with 100mm pipe, MAF removed (Speed Density) with the option to retain MAF. Drilling through the base of the stock filter box/ inner wing and running 125mm flexible hose to and facing forward through the lower front grill.
Stock filer panel offers the greatest filter area
Option 2
Replace existing pipe and stock filter box for 125mm aluminium/rubber tube, drilling through the inner wing as above and attaching to 125mm flexible hose to lower front grill with largest K&N filter behind the front grill.
Huge CFM, but filter area is difficult to match stock filter panel
Keeping the filter tucked up under the wing it can still draw hot air exiting the engine bay.
I think MAF is 85-88mm
Biting the bullet and installing a CAI, two options
Option 1
Replace pipe from TB to Stock filter box with 100mm pipe, MAF removed (Speed Density) with the option to retain MAF. Drilling through the base of the stock filter box/ inner wing and running 125mm flexible hose to and facing forward through the lower front grill.
Stock filer panel offers the greatest filter area
Option 2
Replace existing pipe and stock filter box for 125mm aluminium/rubber tube, drilling through the inner wing as above and attaching to 125mm flexible hose to lower front grill with largest K&N filter behind the front grill.
Huge CFM, but filter area is difficult to match stock filter panel
Keeping the filter tucked up under the wing it can still draw hot air exiting the engine bay.
Edited by Gelf VXR on Tuesday 1st April 12:20
problem you'll have with option 2 is on wet days its likely the filter will get drenched and that water will ultimately be pushed up into the intake. Your best option is actually to install an OTRCAI running mafless - gives large filter area and shortest route for cold air into the manifold. Saves all that drilling large holes in the wings. Its the way most of the US and Oz owners improve the airflow into the engine.
Well_Fans said:
problem you'll have with option 2 is on wet days its likely the filter will get drenched and that water will ultimately be pushed up into the intake. Your best option is actually to install an OTRCAI running mafless - gives large filter area and shortest route for cold air into the manifold. Saves all that drilling large holes in the wings. Its the way most of the US and Oz owners improve the airflow into the engine.
Ive grown tired of watching LS forums for OTRCAI progress, they never materailise for the LS2 and the filters for them are laughable which is from what Ive seen why they never make mass production.Hydro lock is only an issue if i were to drive through a ford, I have played around with aquamist water injection and injected large quantities with a turbo application, water is not harful in this respect, water ingestation can help reduce knock and clean the combustion chamber of carbon build up.
If anyone is intereste to know how much restriction is in the stock air inlet, Baro on the day was 102kPa
average 9 kPa @ 6400RPM
This is how I will measure the effectiveness of any CAI, before and after of MAP against BARO at WOT.
You can find out all sorts with EFILive, quality piece of kit.
average 9 kPa @ 6400RPM
This is how I will measure the effectiveness of any CAI, before and after of MAP against BARO at WOT.
You can find out all sorts with EFILive, quality piece of kit.
Edited by Gelf VXR on Tuesday 1st April 13:50
ringram said:
With my PT based OTRCAI I dropped 2kpa max. 9 is a lot.
Basically gaining say 5kpa is the same as 5% more air, which is the same as 5% more power at that point...
I'm not sure of the math, but if I can increase kPa at WOT and lower intake temps at the same time, there is a lot to be gained over the stock set up.Basically gaining say 5kpa is the same as 5% more air, which is the same as 5% more power at that point...
stigmundfreud said:
???! So yu are saying at WOT you are dropping to 9kPa? typo me thinks? 
One is going back out tonight to relog as I'd stopped with baro a long time back due to concentrating on getting the engine in trim with the components to hand.
No typo, did you look at the table?One is going back out tonight to relog as I'd stopped with baro a long time back due to concentrating on getting the engine in trim with the components to hand.
Edited by stigmundfreud on Tuesday 1st April 14:39
just looked - be interesting to compare to the stock set up I have as I am bored tonight...Gelf VXR said:
ringram said:
With my PT based OTRCAI I dropped 2kpa max. 9 is a lot.
Basically gaining say 5kpa is the same as 5% more air, which is the same as 5% more power at that point...
I'm not sure of the math, but if I can increase kPa at WOT and lower intake temps at the same time, there is a lot to be gained over the stock set up.Basically gaining say 5kpa is the same as 5% more air, which is the same as 5% more power at that point...
ringram said:
Gelf VXR said:
ringram said:
With my PT based OTRCAI I dropped 2kpa max. 9 is a lot.
Basically gaining say 5kpa is the same as 5% more air, which is the same as 5% more power at that point...
I'm not sure of the math, but if I can increase kPa at WOT and lower intake temps at the same time, there is a lot to be gained over the stock set up.Basically gaining say 5kpa is the same as 5% more air, which is the same as 5% more power at that point...
OTRCAI's are vapourware for the LS2 lol
The Volant T piece with twin filters at the TB are popular now, drawing air from the bonnet vents, which are in a low pressure area however. Don't bonnet vents usually exit air in that location, high pressure is at the yop of the bonnet near the windscreen..
The Volant T piece with twin filters at the TB are popular now, drawing air from the bonnet vents, which are in a low pressure area however. Don't bonnet vents usually exit air in that location, high pressure is at the yop of the bonnet near the windscreen..
Edited by Gelf VXR on Tuesday 1st April 17:10
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