Hi all,

so I just purchased a Chrysler Crossfire and I would like to know what would be the best/recommended air filters to buy.

I am also interested in purchasing a nice exhaust system to enhance the nice v6 engine.

Any suggestions ?

Thx

 

I don't recommend the K&N Drop-In filters, they don't fit in the stock airboxes very well, which could allow unfilter air to bypass them.

If you want aftermarket performance air filters, go with an complete air intake.

These sold from Needswings seems to be popular on this forum: https://www.needswings.com/intake-xf

As for exhaust, I didn't go with a catback exhaust, but instead just changing out the muffler for a better sound. I'm going with Flowmaster Super 44 (2.25" in with dual 2.25" out) and having my muffler shop weld it in place. About $250 including the price of the muffler. You won't see much in the way of performance gains, mostly sound.

Here is the catback Magnaflow system sold on Needswings as well: https://www.needswings.com/magnaflow...exhaust-system

 

Not sure I agree with the feedback above about the fitment of the K&N filter elements in the stock air box. I ran these for several years & didn't see this as an issue. I have since changed to just getting the standard air filter design from a reputable supplier & changing them out every couple of years. I don't believe the K&N offers that much of a performance improvement. I will agree that if you want to improve the "breathing" of a Crossfire, you need to consider a wholesale changeout of the inlet air system (just like SD Crossfire stated above). And upgrading to the larger throttle-body will probably net you the most improvement. This conversion can be bought from Needswings.com and the Forum has documentation on how to implement this upgrade.

 

I can only tell you from my first hand initial experience, but the K&N outer seals were thinner than the OEM ones. To the point they barely made a complete seal at the front and back of both airboxes. I found this issue on other K&N drop-ins in the past. Considering how little they do in terms of performance, I don't think it's worth the risk especially on engines that are getting to be close to 20 years old at this point.

That being said, maybe these particular filters elements weren't representative of all the drops ins for the Crossfire and had a defect.

 

I went with the K & and filters along with the 74 mm throttlebody upgrade. Our Crossfire has relatively low miles so I wanted to keep it very close to original. The needs wings single cold air intake is probably your best option for performance along with the throttlebody upgrade. On the NA Crossfire the dual Cold air intake does not offer significant gains over the single but comes at a significantly higher cost. From what I’ve read the exhaust systems don’t give a noticeable power improvement but a euro charged tune after the intake and throttlebody upgrades would be beneficial. You could also get the Mercedes V8 airbox which has larger filter elements and more flow volume and get K & N filters for it.

 

I have K&N in both of mine and frankly they make no difference. If I had it to do over, I would stay with stock.

 

PLUS, an additional down side. IF you over-oil them after cleaning (tricky because you have no idea what the correct amount is) and the engine ingests some of it, it'll ruin at least the MAF sensor (so I've been told).

Not sure if that MAF sensor can be adequately cleaned afterwards (I've been told a big NO, it's ruined)...


.

 

Ordered a used Engine top cover to replace my Crossfire cover with a minor crack. Used cover had K&N filters inside. Ordered K&N cleaner kit and cleaned them, but noted some comments online regarding MAK issues and engine running lean errors. I will stay with OEM filters. Clearer kit had new oil spray but it would be easy to over oil the filters.. 2005 Crossfire roadster bought last September, 2023 and love it. Wally Burlingham

 

I have had K&Ns in both Crossies for probably 15 years. I only drive them 2000+ miles/yr, so I clean and re-oil about every three years. Never had a problem with the MAF. Key is use the K&N cleaner and then use an air compressor to blow off the excess, then let them dry overnight. Oil the next day and again use the compressor to blow off excess, then stand them up on newspaper and let them drain overnight. A second compressor blowing does not hurt.

 

There are three Mercedes filter boxes that fit, only one of them clears the hood liner. They all take the same filters,the original intakes fit inside the Mercedes box, I used the larger Mercedes tubes that came with filter box, they just squeeze into the holes in the rad support.
Frankly the NeedsWings SCI. Is the best option for the NA.