Air filter relocation

[yiug412]

Hi

As my MR2 is getting proper brakes, matt's bracing and teins spring this weekend. I really think it need some sound from the engine and thinking about cone filter I take for some induction noise.

I had a search on the forum, basically using the £40 eBay kit will just make intake temp go crazy.

I read something about relocating in front of battery behind the vent. I also read as that changed the intake length from the MAF sensor to the throttle it will need ECU tuning. Can some please advise on this if possible?

Thanks!

Louis

[AndyM]

Hi Louis,

All I can say is that I made a 'behind the battery' kit and installed it about a month ago and I've had zero issues with it. Performance has been in no way compromised (in fact I think it's got a bit more around the 3500 mark) and the ECU fuel trims seem to have settled so I'm getting exactly the same MPG as before and no rough running.

That said, I haven't measured the tube (I cut it to fit) so I may have accidentally ended up with a similar length between the MAF and TB as stock without realising.

My personal advice would be to make sure you get a decent filter on there. There is no point chucking out the decent stock panel to replace it with a bit of cheap eBay gauze in my opinion. It might sound raspy but you really don't want badly filtered air taking a direct route into the engine. I went with a top notch Apexi cone (imported from Japan) to give me the best of both filtration and flow.

Hope some of that helps.

Andy

[yiug412]

Hi Andy

Thank you for the info! Just wondering did you cut and join an eBay one with their MAF holder or cut up a stock upper air box so all the vanes are in place?  Also how's the induction sound having it sat right behind the passenger?

Good choice on the Apexi filter  s:) s:)  I have the Apexi filter on my RB25 as well, can never go wrong with them.

Thanks!

Louis

[AndyM]

I actually salvaged a metal MAF adaptor from a PE turbo kit which was pretty much perfect for what I was doing. I had previously cut a stock box down though as that was what I was going to use, I think I'd rather use that than the eBay one.

The induction sound is good. You get a raspy/breathy noise on cold start that sound like it's sipping in air. Then when warmed up and giving it some beans you get a nice gargle from that side. I have a TTE exhaust on as well so you get the deep bass/burble from that too, nice combination.  s:) s:)

Andy

[yiug412]

That's sounds good! I think I will go via the modified air box route and steal the Apexi filter from my other car lol.

Thanks for the info Andy  s:) s:)

Louis

[dkirkwood89]

That's sounds good! I think I will go via the modified air box route and steal the Apexi filter from my other car lol.

Thanks for the info Andy  s:) s:)

Louis

Def safer that way Louis, I got an ebay MAF adapter and it wasn't very good, caused me a few problems. I got a std airbox as well to cut up and use, although I havent got to that stage yet

Dale