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Looking at the stock intake design, it seems restrictive considering that incoming air is channeled via two pipes to the air filter boxes.
My thoughts are to remove the stock air filter boxes and fake grills on the bumper and installing cone filters at the end of part 16 on the diagram.
Benefits would be a less restricted pathway for the air and a cooler intake charge as air would be going through the vents on the bumper. Not to mention..the intake noise!
Concerns would be a CEL light but considering the fact that the filter is before the MAF sensor it would seem unlikely. Filters would be by AEM which is a sister company of KN. AEM has a line of dry cone filters which rate pretty highly and remove the concerns with your typical oil based cone filter. AEM is highly regarded in the sport compact market.
Last edited by WhiteTardis; 05-05-2015 at 05:28 PM.
The majority of the problem with open element air filters are that they also suck in hot air from the engine compartment. The benefits of these "restrictive" box type induction systems is that all the air ingested by the engine is from outside the engine compartment. I would like to see a more efficient design, just not open elements.
The majority of the problem with open element air filters are that they also suck in hot air from the engine compartment. The benefits of these "restrictive" box type induction systems is that all the air ingested by the engine is from outside the engine compartment. I would like to see a more efficient design, just not open elements.
While I understand what you are referring to, the filter air boxes are away from the engine bay and in the front fender wells immediately behind the fake grill vents on the bumper(circled in red in picture)
That being said..the filters as is are already located away from the engine bay. Removing the fake vents in the bumper will ensure that outside air will be channel directly onto the proposed cone filters.
Last edited by WhiteTardis; 05-05-2015 at 06:33 PM.
Parts #5 & #6 pull the air in from 'up high', no doubt this is to avoid hydrolocking the engine in the case that a higher than normal quantity of water is encountered.
Not sure I'd risk pulling it in from down low.
You could put the filter @ part #9, but warm air.
Also there was a discussion recently wrt oiled filters and air flow where the conclusion was the increase in air flow was likely minimal (fractions of a %) and there was a corresponding increase in dirt through the filter.
I think this will net minimal gains at best. The stock system flows plenty for the stock tune. It wasn't a car designed for anything other than performance.
I think this will net minimal gains at best. The stock system flows plenty for the stock tune. It wasn't a car designed for anything other than performance.
Not really looking at it from a performance standpoint. Although it may alleviate some of that "choking" feeling that the base V6 suffers from higher RPMs. And not to mention..awesome intake noise on top of the exhaust..
Originally Posted by mshedden
Parts #5 & #6 pull the air in from 'up high', no doubt this is to avoid hydrolocking the engine in the case that a higher than normal quantity of water is encountered.
Not sure I'd risk pulling it in from down low.
I considered that as well however a cone filter would need to be completely submerged underwater for an engine to be hydrolocked. Some light splashing is acceptable. The filter would be upside down anyways so any water would be drained.
Last edited by WhiteTardis; 05-05-2015 at 07:08 PM.
Not really looking at it from a performance standpoint. Although it may alleviate some of that "choking" feeling that the base V6 suffers from higher RPMs. And not to mention..awesome intake noise on top of the exhaust.
I considered that as well however a cone filter would need to be completely submerged underwater for an engine to be hydrolocked. Some light splashing is acceptable. The filter would be upside down anyways so any water would be drained.
Noting that the only difference between the Base and S V6 is the tune, I doubt changing the intake system will relieve the 'choking' you speak of above 5k RPM ...
Although it may alleviate some of that "choking" feeling that the base V6 suffers from higher RPMs.
The only thing that will significantly address the high rpm "choking" is different cam profiles or porting and polishing the heads if Jag has not already done that.
Not really looking at it from a performance standpoint. Although it may alleviate some of that "choking" feeling that the base V6 suffers from higher RPMs. And not to mention..awesome intake noise on top of the exhaust..
That "choking feeling" will be the ECU pulling the throttle back to limit the power ouput.
You want to free things up, flash the V6S tune into your car, or one of the aftermarket tunes..
The intakes on the V6 are identical to the V8, flow more than enough for the V6...
I don't believe that differentiation was made at the time. The claim was the the V6S couldn't handle any additional power. Certainly, Jaguar has proven that the base model can handle a tune..
I don't believe that differentiation was made at the time. The claim was the the V6S couldn't handle any additional power. Certainly, Jaguar has proven that the base model can handle a tune..
Exactly what I meant. Flash the V6S file into the standard V6, or load tune without a pulley e.g. Rica for 398hp.
+1, and I'm nearly convinced that this is a safe way to go. I thought the pulley distinction was always clear, and it was also fairly compelling that the V6S tune is near the edge of what the V6 design can safely handle.
Sorry to bring up an old thread but this is the only one I could find about the intake. What about just replacing #7 and #8 on the graph(intake tubes) for a little more power and noise? They appear to have ribs in them so I wonder if they are restrictive at all? Also i'm not a fan of oil based air filters like K&N but what about a couple high performance dry filters?
To add some light to this subject. I've done some testing on the 4.2 Induction thus far (Which has a split tube entry) similar to the 5.0L and it has proven that the stock system isn't that restrictive. I would venture to say the same for the 5.0L. The resonator's surely eliminate some sound, and the ribbed links certainly impact a little on the air flow side.
The overall design of both systems is pretty adequate for stock boost levels. I wired in a MAP sensor in front of the throttle and did some vacuum measurements to see if the system was trying to draw additional air. I wasn't reading more than 1.2 inhg .
With the dual entry, the restriction in the system would be left to the throttle's capability. I would look at half shafting, porting/polishing the throttle first.
If you are interested in smooth carbon replacement parts with resonators removed, I'm working on a mold for this shortly. I just need the plastic parts from throttle to MAF.
If there is enough interest in this I can push development on this faster.
Thanks for your input Derek and i'm defiantly very interested in some smooth intake tubes for my V6 S. I don't see any dry filters yet available yet for my car but I think with the smooth intake tubes and a couple dry filters installed I might see at least a little gain in horsepower and sound.
05-05-2015, 05:24 PM
Makeshift Intake
