NuclearCrap Posted October 18, 2012 Share Posted October 18, 2012 I've been reading some reviews on this forum and I'm debating whether to do a cold air intake or a K&N filter that goes in the stock air box. The biggest advantage of the K&N is low cost, obviously, and I can keep a stock look in my engine bay. A CAI would most likely net me a bit more performance and would take less space than the OEM air box. My question is, how much performance advantage does a good CAI (CA legal) offer compared to a performance filter designed for the stock box? Is it worth the extra dollar and hassle if I plan to stay on the stock turbo? Link to comment Share on other sites More sharing options...
I Donated Too laff79 Posted October 18, 2012 I Donated Too Share Posted October 18, 2012 leave your intake alone Link to comment Share on other sites More sharing options...
Gex Posted October 18, 2012 Share Posted October 18, 2012 You stock? Stick to the regular paper filter. The stock intake is plenty up till your making 300+whp. You will see little to no gains till you go stage 3+. Do a search. Link to comment Share on other sites More sharing options...
stuck686 Posted October 18, 2012 Share Posted October 18, 2012 replace oem with quality filter Link to comment Share on other sites More sharing options...
Max Capacity Posted October 18, 2012 Share Posted October 18, 2012 Leave the stock intake in there, its hard to beat. I've had a Perrin panel filter in my 05 since Aug 2004, I use the K&N cleaning kit on it once a year. LIGHTLY oil it and you'll be fine. You may want to clean the MAF sensor yearly too. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
rob-2 Posted October 18, 2012 Share Posted October 18, 2012 How will changing intake do anything to a boosted car? Is the car failing to hit the target boost? Link to comment Share on other sites More sharing options...
Haight 05LGT Posted October 19, 2012 Share Posted October 19, 2012 Leave the intake alone! A new panel filter at the most until you are stage 3+ Link to comment Share on other sites More sharing options...
NuclearCrap Posted October 19, 2012 Author Share Posted October 19, 2012 Leave the stock intake in there, its hard to beat. I've had a Perrin panel filter in my 05 since Aug 2004, I use the K&N cleaning kit on it once a year. LIGHTLY oil it and you'll be fine. You may want to clean the MAF sensor yearly too. Do you know if the Perrin one is legal in CA? Right now I'm looking at this K&N: [ame=http://www.amazon.com/33-2304-High-Performance-Replacement-Filter/dp/B000COC0GQ/ref=cm_cr_pr_product_top]K&N 33-2304 High Performance Replacement Air Filter : Amazon.com : Automotive[/ame] Link to comment Share on other sites More sharing options...
Max Capacity Posted October 19, 2012 Share Posted October 19, 2012 Sorry I have no idea. Do they really check your air filter every time they inspect your car ? That's way over kill. Glad I don't live there. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
fahr_side Posted October 19, 2012 Share Posted October 19, 2012 Just leave the intake alone. Spend the money on booze and strippers, it's a better investment and your car will thank you for it. Obligatory '[URL="http://legacygt.com/forums/showthread.php/2008-gh8-238668.html?t=238668"]build thread[/URL]' Increased capacity to 2.7 liters, still turbo, but no longer need spark plugs. Link to comment Share on other sites More sharing options...
ripemeat Posted October 19, 2012 Share Posted October 19, 2012 Keep the stock setup with an oem type filter. It's been said multiple times. Your stock tune is made for a stock intake. Period. Link to comment Share on other sites More sharing options...
Max Capacity Posted October 19, 2012 Share Posted October 19, 2012 Have read that, you want to get the car off the stock tune. It has flaws in it that can burn valves. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Moddiction Posted February 8, 2013 Share Posted February 8, 2013 Just curious about the intakes. How does it lean out the AFR but people say there are no gains? Generally when a mod leans the car out it is making more power, thus needing more fuel no? WWW.MODDICTION.COM Moddiction Stainless steel and Titanium shift knobs. Drivetrain, suspension, brakes, exhaust, cooling, fuel, gauges+MUCH more! Link to comment Share on other sites More sharing options...
Nolmers06LGT Posted February 8, 2013 Share Posted February 8, 2013 They are typically a PITA to tune; The stock box has the MAF in a good location; most CAI's, do not. The map typically needs MAF scaling, and depending on the location of the MAF in the CAI the turbulence can disrupt the readings. Since the stock box flows so well and doesn't need the tune to be scaled, there's not much of a point in a new unit until much later. Check this out: http://www.cobbtuning.com/Technical-Articles-s/70677.htm Link to comment Share on other sites More sharing options...
Moddiction Posted February 8, 2013 Share Posted February 8, 2013 Ok that makes sense. Sounded like if leaning things out it would be adding power. Didn't think about issues with the MAF sensor. Thanks. WWW.MODDICTION.COM Moddiction Stainless steel and Titanium shift knobs. Drivetrain, suspension, brakes, exhaust, cooling, fuel, gauges+MUCH more! Link to comment Share on other sites More sharing options...
underground000 Posted February 8, 2013 Share Posted February 8, 2013 yes leaning afr makes more power and better gas mileage. lean it out too much and you can run lean, knock, and predetonate. which means new engine time 5eat downshift rev match:) Powder coated wheels: completed:) Link to comment Share on other sites More sharing options...
Nrw Posted February 8, 2013 Share Posted February 8, 2013 mmmmm lean AFR's and EJ25 pistons Link to comment Share on other sites More sharing options...
xt2005bonbon Posted February 15, 2013 Share Posted February 15, 2013 mmmmm lean AFR's and EJ25 pistons Link to comment Share on other sites More sharing options...
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