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I am considering purchasing the performance air intake and air filter combo from jaguarxpocom on Ebay for my 02 XKR100. The price is $299 (plus shipping) which seems very reasonable.
I saw something like this attached to an 02 XJR this summer and it looked beautiful. Aesthetics aside, does it really do much for the performance of the car? Anyone had any problems with this upgrade?
Having done some research, it seems like a new supercharger pulley is the best bang for buck performance wise. Anyone have experience with that upgrade? Good bad ugly?
Should I go for all three? If so, does anyone have a recommended supplier?
The polished intake tube definitely looks good, IMO and may improve airflow slightly, although could be more noisy absent the resonators.
...but why, oh why, stick an air filter on the end which will draw in all that hot air from the engine bay-especially on the R?? Heck, if inbound air temp didn't matter there would be no need for the intercoolers.
Smaller S/C pulley is a better option. Several on here have done this.
Last edited by michaelh; Oct 1, 2023 at 12:51 PM.
Reason: remove quoted text
The laws of physics would point out that a metal system (good heat transfer-unwanted!), taking its suction from inside the hot engine compartment is at a disadvantage when versus a plastic system (heat transfer poor- helpful!) that takes its suction from a cold air source outside the engine compartment.
Looking the business is not the same as doing the business
I agree with Michaelh, removing the cold air intake will prove adverse to performance.
I fitted the same intake pipe as your advert (sourced from Mina Gallery) but kept the factory air box.
I'm unsure if there is any extra performance. It may be just 1 or 2% !! I have no data to share..
The supercharger sound is more prominant which I much prefer !!
I decided not to fit the smaller Pulley upgrade as my engine has already done 105,000 miles and I wouldn't feel comfortable putting it under the extra stress. Car is quick enough for me anyway !
It does look nice! The one I saw has a nice "supercharged R" emblem on it. I thought that really upped the "cool" factor! I see yours doesn't have it, was that a choice?
The laws of physics would point out that a metal system (good heat transfer-unwanted!), taking its suction from inside the hot engine compartment is at a disadvantage when versus a plastic system (heat transfer poor- helpful!) that takes its suction from a cold air source outside the engine compartment.
Looking the business is not the same as doing the business
If i knew more (anything) about the laws of physics and their application to heat transfer and internal combustion power generation and performance, we could have a discussion. However, i don't. I am curious why they would invent such a part if there really is no benefit other than to part me with my hard earned $$. I may have answered my own question!
I am not seeing a lot of love for this particular add on.
Does the smaller pulley really put additional stress on the engine? I would hate to break something to gain a few more HP. The car certainly doesn't need more power but....
- MORE POWER!! LOL
rod9669,
I'm also in UK and ordered the pipe direct from Mina Gallery USA https://minagallery.com/performance-items/ There was no UK alternative which had the smooth 'S'-bend feature (Proper Mandrel bent pipe) instead of welded sections.
Price hasn't changed for a few years - still $185 USD + Shipping.
Delivery was a really really long wait !! I reckon it took about 8 weeks from Order (via Air Freight - not Rowing Boat !). In fact, Mina are known for their long lead times and there is a seperate thread on it here https://www.jaguarforums.com/forum/x...ipping-219065/
I installed the Mina Gallery aluminum intake tube kit in April 2019 on my wife's 2006 XK8 after the OEM plastic replacement intake tube I had installed in October 2012 developed the infamous cracks in its accordion section, just as the original factory one had done. The Mina Gallery aluminum intake tube kit is a great product and solves the incessant cracking problem with ALL of the OEM plastic ones....
I also installed the Mina air intake tube on my 1997 XK8 as I had the same problem as Jon89. The car came with a cracked plastic intake tube and after the replacement also developed a crack I decided that the price warranted never having to worry about it again. I also hooked it up to the original air box. I didn't notice an increase in power but it sure looks and sounds good.
Couple of things: the intake allows a greater volume of air (the airbox has a restrictive opening, especially on 4.0 cars); stock & aftermarket intake pull air from the same area (front fender/headlight); the smooth tube is going to allow a less turbulence for quicker throttle response and high RPM power; heat soak of aluminum piping would only be an issue in stop and go as the cool air from a moving car is cooling the intake tubing (ceramic header coating would eliminate heat soak and look OEM); and above all the intercoolers have a bigger effect than the temperature of ambient air being pulled in. The 12whp claimed sounds about right for an R, probably a fraction of that on an 8. The intake likely would make a few extra hp on cars running higher boost levels. So this would not be a part on its own to make a drastic change, but a component to work with other components for better efficiency.
Originally Posted by kiphome
Having done some research, it seems like a new supercharger pulley is the best bang for buck performance wise. Anyone have experience with that upgrade? Good bad ugly?
Should I go for all three? If so, does anyone have a recommended supplier?
Swapping pulleys is the biggest bang for the buck and the gains are noticeable. The larger crank pulley makes the most boost, but requires a machine shop to modify the factory pulley.
If you do intake and pulley swap, consider replacing the crushed section of the over axle exhaust (about 2" diameter) with a full 2.25" piece to match the rest of the system.
Last edited by White Out; Oct 9, 2023 at 05:54 PM.
Couple of things: the intake allows a greater volume of air (the airbox has a restrictive opening, especially on 4.0 cars); stock & aftermarket intake pull air from the same area (front fender/headlight); the smooth tube is going to allow a less turbulence for quicker throttle response and high RPM power; heat soak of aluminum piping would only be an issue in stop and go as the cool air from a moving car is cooling the intake tubing (ceramic header coating would eliminate heat soak and look OEM); and above all the intercoolers have a bigger effect than the temperature of ambient air being pulled in. The 12whp claimed sounds about right for an R, probably a fraction of that on an 8. The intake likely would make a few extra hp on cars running higher boost levels. So this would not be a part on its own to make a drastic change, but a component to work with other components for better efficiency.
Swapping pulleys is the biggest bang for the buck and the gains are noticeable. The larger crank pulley makes the most boost, but requires a machine shop to modify the factory pulley.
If you do intake and pulley swap, consider replacing the crushed section of the over axle exhaust (about 2" diameter) with a full 2.25" piece to match the rest of the system.
Thank you for the detailed response. I am not very mechanical so anything I do would either be done by a mechanic or myself if it is super easy (think a couple of bolts and screws).
It sounds as though you are a proponent of both (all three?) of these upgrades. The air intake looks pretty straight forward and the finished look is phenominal but I am not entirely sure I would go for the changed airfilter (as it looks a bit out of place to me). However the supercharger pulley also intrigues me.
I love my car, it is certainly fast enough but (there is always a but) I would like it to be a bit more responsive in the 50-80mph acceleration range to dispatch with some of the slower vehicles out on the backroads with a little less drama. There is a small amount of hesitation when you hit the throttle and when the supercharger winds up that I am trying to mitigate. I am not sure if these changes are the answer but I am hopeful!!
Thank you for the detailed response. I am not very mechanical so anything I do would either be done by a mechanic or myself if it is super easy (think a couple of bolts and screws).
It sounds as though you are a proponent of both (all three?) of these upgrades. The air intake looks pretty straight forward and the finished look is phenominal but I am not entirely sure I would go for the changed airfilter (as it looks a bit out of place to me). However the supercharger pulley also intrigues me.
I love my car, it is certainly fast enough but (there is always a but) I would like it to be a bit more responsive in the 50-80mph acceleration range to dispatch with some of the slower vehicles out on the backroads with a little less drama. There is a small amount of hesitation when you hit the throttle and when the supercharger winds up that I am trying to mitigate. I am not sure if these changes are the answer but I am hopeful!!
Thanks again,
Kip
It really depends on what you are looking for out of your car. All three will get the most power, but will be louder.
If you do not want the open air filter, an option is to add a K&N drop in filter to the stock airbox and cut open the bottom of the airbox on the front right corner (with a dremel) and remove the inner fender duct - essentially taking the idea of the 4.2 airbox trap door to the next level. This will quiet the intake over an open element filter, look stock, and still offer significantly more volume of air. The aluminum tube can be added for more power and quicker throttle response.
The crank pulley really wakes up the mid-range power. The easiest way to explain it is the pedal requires less effort to accelerate while cruising in a luxury GT car fashion, not like a sports car. The s/c is louder as it is spinning faster. Swapping both crank pulley & s/c pulley will get more power and supposedly the factory tune can handle the additional boost of both. If only doing one pulley, the crank is going to be the best bang for the buck and if you are having a shop do it, just make sure they can machine the stock pulley (or work with a machine shop).
Data logging the cut up stock airbox, K&N filter and crank pulley swap was good for a 0-60 time of .26 seconds quicker than stock and a 1/4 mile .25 seconds faster and 1.25mph higher trap speed. The additional boost and air volume really help the low and midrange as the 0-60 is dramatically quicker, but the exhaust is restricting top end performance as that gain to 60 is simply carried out throughout the 1/4 mile instead of greater gains all the way through the 1/4.
Again, the only part that really needs replacing is the crushed section/axle mufflers, the remainder of the exhaust stock has a nice design (while quiet) and there would be no additional gains unless the entire exhaust was increased to a 2.5" diameter.
Performance air intake tube and air filter combo
