Lag with Perrin Intake around 4- 4.5k rpms - Page 2 - Subaru WRX Forum
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#16 Old 07-19-2011, 10:59 AM
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Originally Posted by pzr2874 View Post
Yeah, get a stock box and a K&N drop in filter.

For now.

FWIW.... The CAI's give you more in the mid to top end......
Yea i just put it back on [stock] intake and dropped a k&n ### my paper filter was soooo dirty.

I'll wait to out the cai until I get my AP and then get the map for it. Thanks a lot guys!
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#17 Old 07-19-2011, 11:22 AM
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Also, I wouldn't just plop it back in.. .regardless of the map you get for it...
Get it tuned for. I wouldn't trust the OTS/eTunes for CAI's.

Paul
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#18 Old 07-19-2011, 11:34 AM
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Just hold off on it until you get a protune.

Kirt
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#19 Old 07-19-2011, 02:11 PM
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^^ Thanks for the lay-terms.

Paul
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#20 Old 07-19-2011, 03:53 PM
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No problem

Kirt
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#21 Old 07-20-2011, 01:09 AM
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Originally Posted by pzr2874 View Post
To top it off, that intake is one of the hardest ones to tune for (Al from Dynoflash did mine and had a helluva time with it).

Is it the silicone one with the foam filter?
Sorry for the off topic BRO but how was your tune from Big Al, that guy is quite a character! Don't you think BRO?
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#22 Old 07-20-2011, 05:46 AM
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^^ LOL

He's an @$$. But a good tuner. He came down here to SA to get a bunch of people together for a tune-weekend. He spent nearly 3 hours road tuning my car.

I liked the tune, but the intake , meh... not so much.

Paul
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#23 Old 05-28-2014, 06:59 PM
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Why is it so dangerous to run (for example) a Perrin CAI without a tune? Everyone is so quick to say "Don't do it bro" it will mess you F=A ratio... it will run lean...
Please give me a no $#!+ answer as to why, and exactly what it will mess or damage or blow up???
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#24 Old 05-28-2014, 11:06 PM
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Originally Posted by allo1231 View Post
Why is it so dangerous to run (for example) a Perrin CAI without a tune? Everyone is so quick to say "Don't do it bro" it will mess you F=A ratio... it will run lean...
Please give me a no $#!+ answer as to why, and exactly what it will mess or damage or blow up???
--I understand this is your first post, This is a great thing to ask in the newbs section rather than posting your question in a 3 year old thread about performance lag?

You want the NO BS answer here goes, your ECU is tuned from the factory to a level of precision usually within .1%. that means that your factory map will release a predetermined amount of fuel for a given MAF voltage to within .1%. ANY INCREASE in airflow around the MAF > .1% will cause the MAF to under report the amount of air in the system. The ECU reads that under reporting and sends too little fuel to the cylinders causing a LEAN condition. LEAN condition can cause KNOCK, burnt pistons, burnt cylinder walls, and in some cases cause premature engine failure. While it may feel like more power for a minute it can cause permanent damage to your engine.

If you want to try a new intake please use a map designed or tuned for that intake, the cost of an intake and a tune is much less than a new engine, I'm not saying it will always grenade your engine to run without a tune but lets not risk it, these aren't Hondas.

Jason
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#25 Old 05-28-2014, 11:30 PM
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yeah fer serious, i had a dirty maf sensor and my car would do all sorts of bucking and hesitation. if the computer on these cars is thrown off the whole car is effed up. sheesh!
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#26 Old 05-29-2014, 02:41 AM
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It's not that we are quick to pull things out of our ***'s, its that we have been around subaru's long enough to see what happens when people don't listen. It's your car though, you do what you want with it.


Its funny, I posted this then went over to nasioc and this topic was going on: http://forums.nasioc.com/forums/show....php?t=2633711

His CAI, untuned, was causing a lot of knock and hell with with his timing.
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