XFR-S Upgraded Air Intake
#1
07-02-2018, 02:47 PM
XFR-S Upgraded Air Intake
I really wanted to hear the supercharger more, so with that in mind I removed the engine cover and under-bonnet insulation, but this didn’t make much difference. I could just about hear it from a standing start, but soon after the exhaust would drown it out.
I also fitted a stainless steel intake pipe as many though the standard pipe, with its built in silencers, was also to blame for the silent supercharger. It didn’t make any difference.
So the only thing left to do was to swap out the factory air boxes with some cone filters. On the later 5.0 V8 Jaguar changed the MAF sensor slightly. It still bolts into the air box but it has around a 20mm lip on the inside, perfect for clamping an air filter on.
So I measured up to see what filters would fit and I ended up with a pair of Ramair filters.
Instantly it came to life! The supercharger noise was released!
Took her for a spin and you can really here it.
So pleased with the noise, it sounded fantastic on the track yesterday just a shame my cameras failed and you can’t hear it.
I also fitted a stainless steel intake pipe as many though the standard pipe, with its built in silencers, was also to blame for the silent supercharger. It didn’t make any difference.
So the only thing left to do was to swap out the factory air boxes with some cone filters. On the later 5.0 V8 Jaguar changed the MAF sensor slightly. It still bolts into the air box but it has around a 20mm lip on the inside, perfect for clamping an air filter on.
So I measured up to see what filters would fit and I ended up with a pair of Ramair filters.
Instantly it came to life! The supercharger noise was released!
Took her for a spin and you can really here it.
So pleased with the noise, it sounded fantastic on the track yesterday just a shame my cameras failed and you can’t hear it.
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#3
07-03-2018, 12:00 AM
UNIVERSAL INDUCTION CONE FOAM POD AIR FILTER FOR CUSTOM KITS - 90MM WITH REDUCING RINGS | Ramair Filters
#5
07-03-2018, 01:12 AM
i actually haven’t finished yet. Still need to make up some barriers to separate the filters from the engine. These will incorporate the factory cold air feeds.
Last edited by Puntoboy; 07-03-2018 at 02:49 AM.
#6
07-03-2018, 12:55 PM
Veteran Member
People can't seem to get it through their skulls that cone filters only really suck in warm air when you're standing still or moving slowly. So long as you still have access to outside air (ie keeping the stock snorkels in place, etc.), the instant you get moving, the rush of air flow compensates for the lack of power while idling (btw, who needs power when you're idling?).
Yes, temps do rise faster with cones when you're standing still, but they drop like a rock as soon as you get moving again, much faster than they do with the stock box. I have seen this for myself using live OBD data on my old X350, even without a heat shield.
I'm glad somebody else has finally done this mod. The Ftype guys have been trying to increase supercharger whine for a while now, but when they're given the answer, nobody actually goes through with it.
Last edited by XJ8JR; 07-03-2018 at 12:58 PM.
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#7
07-03-2018, 02:57 PM
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#8
07-03-2018, 05:26 PM
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Coz as I explained on the other forum with the F-Type it's not a simple case of swapping out the stock air boxes and panel filters for a pair of cone filters like you have done on your XFR-S. The F-Type air boxes are tucked way down low in front of the front wheels, they are not at all easy to get at (odds on the whole front bumper has to come off to get at the mounting brackets and/or bracket bolts), and then you have to figure out a way of holding the cones firmly in place so they don't wobble around which probably means custom made brackets.
Apologies if you are talking only about the XFR and/or XFR-S, as I assume you are now talking about the F-Type.
Apologies if you are talking only about the XFR and/or XFR-S, as I assume you are now talking about the F-Type.
#9
07-03-2018, 10:40 PM
Senior Member
Ugh.
People can't seem to get it through their skulls that cone filters only really suck in warm air when you're standing still or moving slowly. So long as you still have access to outside air (ie keeping the stock snorkels in place, etc.), the instant you get moving, the rush of air flow compensates for the lack of power while idling (btw, who needs power when you're idling?).
Yes, temps do rise faster with cones when you're standing still, but they drop like a rock as soon as you get moving again, much faster than they do with the stock box. I have seen this for myself using live OBD data on my old X350, even without a heat shield.
I'm glad somebody else has finally done this mod. The Ftype guys have been trying to increase supercharger whine for a while now, but when they're given the answer, nobody actually goes through with it.
People can't seem to get it through their skulls that cone filters only really suck in warm air when you're standing still or moving slowly. So long as you still have access to outside air (ie keeping the stock snorkels in place, etc.), the instant you get moving, the rush of air flow compensates for the lack of power while idling (btw, who needs power when you're idling?).
Yes, temps do rise faster with cones when you're standing still, but they drop like a rock as soon as you get moving again, much faster than they do with the stock box. I have seen this for myself using live OBD data on my old X350, even without a heat shield.
I'm glad somebody else has finally done this mod. The Ftype guys have been trying to increase supercharger whine for a while now, but when they're given the answer, nobody actually goes through with it.
#10
07-03-2018, 10:49 PM
Senior Member
I wasn't having a pop at you; it is always useful to know the effects of any modification in isolation and in conjunction with others. In this case you will probably have lost 5 -6% of your power across the entire engine speed range, but only before and after dynamometer testing would confirm this, a hot day would be preferable as high ambient temperatures exacerbate any tendency to heat the charge.
#11
07-03-2018, 11:00 PM
Senior Member
Sometimes the "solution" to a problem has downsides more than compensating for the perceived improvement. If you want more blower whine, start by increasing the supercharger rpm, with a pulley upgrade, Powerhouse will supply, and fit, including any necessary machining for a very modest sum. This will have the added benefit of increased bhp & Nm, a proper (bespoke) dynamometer proved remap would be needed to fully exploit this, and any other changes (exhaust etc) which you may have made. Less than a grand, and you'll have your supercharger howl, and C600 bhp.
#12
07-04-2018, 01:01 AM
Coz as I explained on the other forum with the F-Type it's not a simple case of swapping out the stock air boxes and panel filters for a pair of cone filters like you have done on your XFR-S. The F-Type air boxes are tucked way down low in front of the front wheels, they are not at all easy to get at (odds on the whole front bumper has to come off to get at the mounting brackets and/or bracket bolts), and then you have to figure out a way of holding the cones firmly in place so they don't wobble around which probably means custom made brackets.
Apologies if you are talking only about the XFR and/or XFR-S, as I assume you are now talking about the F-Type.
Apologies if you are talking only about the XFR and/or XFR-S, as I assume you are now talking about the F-Type.
I wasn't having a pop at you; it is always useful to know the effects of any modification in isolation and in conjunction with others. In this case you will probably have lost 5 -6% of your power across the entire engine speed range, but only before and after dynamometer testing would confirm this, a hot day would be preferable as high ambient temperatures exacerbate any tendency to heat the charge.
but thanks. Sometimes the "solution" to a problem has downsides more than compensating for the perceived improvement. If you want more blower whine, start by increasing the supercharger rpm, with a pulley upgrade, Powerhouse will supply, and fit, including any necessary machining for a very modest sum. This will have the added benefit of increased bhp & Nm, a proper (bespoke) dynamometer proved remap would be needed to fully exploit this, and any other changes (exhaust etc) which you may have made. Less than a grand, and you'll have your supercharger howl, and C600 bhp.
#13
07-04-2018, 01:16 AM
Senior Member
Please keep us updated; the experience of others is always useful, good, or bad. Hopefully you won't need to use the warranty, irrespective of modifications clouding matters; the whole car is a well engineered device about as tough and reliable as they come, given proper maintenance and a not too crazy search for power.
#14
07-04-2018, 01:17 AM
Please keep us updated; the experience of others is always useful, good, or bad. Hopefully you won't need to use the warranty, irrespective of modifications clouding matters; the whole car is a well engineered device about as tough and reliable as they come, given proper maintenance and a not too crazy search for power.
#15
07-04-2018, 01:22 AM
Senior Member
Oh dear, you have been unfortunate. I have one supercharged Jag on 72,000, and the other on 136,000, with no such problems, or any others, except for an occasional spurious warning lamp illumination.
#16
07-04-2018, 01:35 AM
I probsbly have but SC failures aren’t uncommon. It started as the usual snout rattle but the dealer replaced that and it didn’t fully cure the issue so had no choice but to replace the entire SC.
#18
07-05-2018, 12:19 PM
Veteran Member
Due to my skull being so thick, I can't understand why the intake would cause losses. I hope you're not insinuating that the metal tube heats up the air hurtling through it.
#19
07-05-2018, 12:23 PM
Veteran Member
Coz as I explained on the other forum with the F-Type it's not a simple case of swapping out the stock air boxes and panel filters for a pair of cone filters like you have done on your XFR-S. The F-Type air boxes are tucked way down low in front of the front wheels, they are not at all easy to get at (odds on the whole front bumper has to come off to get at the mounting brackets and/or bracket bolts), and then you have to figure out a way of holding the cones firmly in place so they don't wobble around which probably means custom made brackets.
Apologies if you are talking only about the XFR and/or XFR-S, as I assume you are now talking about the F-Type.
Apologies if you are talking only about the XFR and/or XFR-S, as I assume you are now talking about the F-Type.
https://www.jaguarforums.com/forum/f...ke-mod-150598/
#20
07-16-2018, 04:44 PM
I would assume not as well. While the intake tube would be heat soaked after a short amount of time, the air would be flowing fast enough that it wouldn't heat up enough before reaching the engine.