I've decided to purchase a pulley/tune combo for my XKR '07. I spoke with Jags from ECU Tuning Group. He says the best mods for my car are BMC drop-in filter, ECU tune, 1.5psi upper pulley and cat-back exhaust. Anything else would be wasted money and are not necessary for the best power gains. I just purchased a dual cold air intake from Eurotoys (made by Mina) for my car and mentioned it to Jags. He told me it was a bad idea and that I would lose major power from this upgrade. I then called Mike at Eurotoys for his input on his product and he told me it was made by Mina and that he didn't know why or if I would lose power. The dual CAI on our XKRs are in the front bumper, therefore they don't take in warm air from the engine bay. I'm really at a loss as to why it would be bad to put in this upgrade and why I would lose hp or torque. To make matters worse Mina no longer sells this upgrade because too many customers installed it on their own and ended up getting check engine lights because of bad MAF positioning/syncronizing. Mike assures me that with his install instruction there is no problem. What do you guys make of all this?

 

I bought the Mina version and installed it on my '07 XK. The XK differs from the XKR in that the XK has but one air filter, located under the left front.

When installing any air intake modification, it is absolutely essential that the intake air supply downstream (towards the engine) from the mass airflow sensor (MAF) is airtight. The Mina version has a metal tube which itself provides a mount for the MAF. Mina has you no longer using the OEM mount for the MAF. The problem is the Mina tube is too small in diameter permitting an airleak past the MAF. I tried to shim up the Mina tube with tape, but was never able to get a good seal.

I wound up making my own intake. I used a K&N #1040 air filter, which is much larger than the Mina and has a 4" intake. I attached a short metal 4" connnector tube to the air filter; then a 90 degree rubber bend; then another short 4" metal connector - finally attached this upstream of the OEM mass air flow sensor.

I have not dynoed the change and have no plans to do such. But, I did notice a nice little power increase, felt mostly at the top end.

 

BMC replacement filters are nothing to turn your nose at. I bet just doing that in the OEM intake will see some benefit.

 

I don't mean to take your thread in a different direction. but you mentioned BMC filters. i have used them on the motorcycles I used to race, and they were the best in my opinion, but I did not know they made filters for the 07+ XKR. do you have any idea the part number?


the last bike i had was a highly modified 2006 ZX6r. I did a before and after dyno test with the filter. the results were somethign like...

slighty dirty stock paper filter- 122HP
brand new BMC - 127HP

I know it was no benchmark test. but i thought it was intresting.

 

Here's the applications listed from BMC for Jaguar:

JAGUAR:
XJ 8 3.2 i V8 (HP: 237 | Year: > 97)
XJ 8 4.0 i V8 (HP: 284 | Year: > 97)
XJ R 4.0 i V8 Kompressor (HP: 363 | Year: )
XK 8 4.0 i (HP: 284 | Year: )
XK 8 4.2 i (HP: 298 | Year: 96 >)
XK R 4.0 i Kompressor (HP: 363 | Year: )
XK R 4.2 i Kompressor (HP: 395 | Year: 96 > 06)

 

I cancelled my order for the CAI. I'm worried about CEL. I wanted to go with BMC but like Moses pointed out they don't make one for 2007 and newer XKR. I wanted to go with K&N but strangely they don't make one either. Only for 2006 and older and 2010 and newer. None for 2007-2009... What's so weird about our intakes in the 2007-2009 generation??? Damn...

 

What other cars use the same air filter as ours? Is there a cross reference available?

 

Found them: K&N for Jaguar XKR 2007-2009 (2 filters) from Adamesh in the UK. $150 US or Canadian shipping included. Sold!

 

I've had the mina intake for almost 2 years now and no problems although I only drive approx 1,900 miles a year. Performance filters do gain power but depends on the car. Some cars gain 0hp and some have significant gains. I follow the R8 forum and remember someone posting a before and after dyno with BMC filters and it gained 21HP on a V10. I didn't feel much different in the SOTP with the Mina Air Intake but if it gained a few HP thats ok with me. With Veizu Tune (tuner from UK), exhaust, cats, upper and lower pulleys and Mina Air Intake, I gained approximately 86RWHP. Could have been alittle more if not for heat soak on the supercharger after 1 hour driving to the dyno shop. Unfortunately I didn't do a baseline but this estimate is based on another members stock dyno numbers.

Any concern one might have on the Mina Intake is water injestion resulting in hydrolock. The conical filters do sit low and any standing water due to heavy rain can be a concern. Because my Jag is a garage queen and only drive it on sunny days, I'm not as concern as someone who drives their XK as a daily driver. I did get caught in heavy rain coming home once but no problems.

As you can see the conical filters do sit low and expose: Jaguar Forums - Jaguar Enthusiasts Forum - View Single Post - Update on Mina XKR Dual Cone Intake Kit

 

The open cone filter, Mina, K&N or any brand, is not directly exposed to rain in the '07-09 XK/XKR. It is completely concealed from the outside of the car, and cannot be seen facing the grill. It would take a very deep puddle to bring water to level of the cone filter, like wheel hub deep.

By the way, the Mina-supplied cone filter has no brand name. I suspect it is just a knock-off. It definitely is not a K&N or Airraid. The Mina combo may have fit the XK8, but it definitely does not fit the '07+XK/XKR.

The OEM filter is enclosed in an air/water tight box, and there is a snorkel tube which leads vertically from the box. Obviously, this design insures no problems with water entry.

Previously, I had a Cadillac CTS-V, which I modified so that the front brake duct lead directly to and exposed cone air filter. In 100K miles I hit some standing water several times at speed, which forced some water up into the intake. The result was the motor temporarily missed and lost power. There was no hydrolock; and my guess is that most motors would quit well before enough water was ingested to create hydrolock.

The obvious conclusion is that if one is worried about the possibility of hydrolock, then leave the airbox bone stock, and maybe try to find an interchange fit for a panel K&N. For sometime K&N advertised a filter fitting the '07. I ordered one directly from K&N; and, of course, it didn't fit. Had some discussions with K&N; and concluded they had just assumed that XK8s had the same filter.

 

Hi Rey, do you have any pics of your set-up?

 

My uncle's 3 Series hydrolocked from going through standing water and blew the engine. I think he had an AEM intake, but it was the exposed cone filter style.

 

In my opening statement I cited that Jags told me I would LOSE power with a CAI. This is what worries me the most, not hydrolock. This is strange because I never heard of a car that lost power with a CAI. He told me the OEM system on XKR (2007+) was better designed to produce the best amount of power then any CAI system... Also, after trying to find a drop in filter, I noticed that K&N only made one for 2006 and older (1 filter) and 2010 and newer (2 filters). Doesn't 2007-2009 XKR have 2 filters? Since 2010+ has the newer 5L engine I understand that the 2 filters for this model probably don't fit my 2007 but how hard can it be to make some for 2007-2009. Very strange...

 

Beware of the K&N 33-2190 filter.. a lot of sites list it as 07-09 compatible but its not. Fortunately I bought them through amazon and the return for refund was no problem.

 

The OEM intake is a true CAI because it draws its intake air fully from outside the engine compartment and there is no mixing whatsoever with under hood air.

That written, the OEM is not the most efficient system. It has way too many curves and changes of direction. The airbox where the filter resides is very small (that's why the XKR has two airboxes).

 

Just wanted to let you guys know that I purchased K&N filters from Adamesh in the UK for my XKR '07 and they are 33-2445. If you check with K&N here in North America these are listed for XKR 2010 and up only. So if you have a 2007-2009 XKR and you want to purchase some K&N air filters (2) you can go with the ones listed for 2010 and up. They use the same part number as our 2007-2009 even if K&N USA doesn't list them as such. Cheers.

 

I just ordered myself a set as well. cheapest i found was autoplicity.com $127 shipped is not bad.

Thanks for the info

 

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