DO i need a tune for an intake - Subaru WRX Forum
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#1 Old 02-16-2010, 07:25 PM
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DO i need a tune for an intake

do i need to get a tune if i get a short ram intake (65mm),
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#2 Old 02-16-2010, 07:33 PM
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Depends on which one you get.
Which intakes do not cause problems with the air/fuel ratio? The only manufacturers of intakes that claim in writing not to cause any ill effects are:
a. TurboXS
b. APS
c. Perrin (based on personal email correspondance with Perrin)
d. K&N Typhoon (based on testing by nhluhr and testing by AaronWRX, both NASIOC members) These tests were performed on an STi and their effect on WRX A/F ratios is untested.
e. Cobb Tuning
f. SPT
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#3 Old 02-16-2010, 07:37 PM
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it is actualy an intake from a company called kstech, i read it on the fourm, and looked it up, the company seems legit, but i dont have to much money since i had to put money down this past weekend to finaly get my rex and dont have the money for a tune, and wanted to get an intake and then down pibpe and exhaust befor i get my tune
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#4 Old 02-16-2010, 08:02 PM
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Get the parts, but save up to install them right before the tune. Its better safe than sorry.

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
Stage 2 2005 WRX
Cobbtuning.com"
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#5 Old 02-16-2010, 08:10 PM
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yea that is true, i just read so many review, where on the 08 up it can help and dont need a tune, but then some people say you do, i think i should just get a down pipe and a cat back, i just wish that we could get a straight answer
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#6 Old 02-16-2010, 08:30 PM
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I can understand where you are coming from. I have read both ways also, and honestly I have no experience with the newer models, so I dont want to be the one to mislead you.

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
Stage 2 2005 WRX
Cobbtuning.com"
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#7 Old 02-16-2010, 08:41 PM
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In general, anything you change of significance needs a tune. But, that being said. You don't have to. You just run the risks of running lean/rich and eventually hurting your engine. Like newtothegame said, better safe than sorry. Granted the new 08+ models haven't had to many intakes run like oem, that way they can be considered safe to not tune. Because the 08 bent s pipe intake design isn't that great compared to a straight intake pipe. The 02-07 models can run a Cobb intake or SPT and those run like oem. Confused yet? lol. A Perrin intake runs on a Perrin AP map fine and the AEM intake runs with a XPT map pretty good on the new models. Everything else would need a protune.

Kirt
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"When in doubt...flat out" - Colin McRae
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#8 Old 02-17-2010, 06:49 AM
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yea i understand, it sounds better just to save up and get a statge one tune, more power anyways
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#9 Old 03-25-2010, 12:42 PM
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i have read on many sites that the AEM is identical to the stock air box in diameter etc. because AEM went along side Subaru in making it. I just ordered mine the other day should be here on the 29th. Also, you dont need a tune with the AEM intake because the MAF readings wont be off due to the same diameter size in both intakes.
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#10 Old 03-25-2010, 01:37 PM
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Where the MAF is placed in the tube has a lot to do with it too, aka before or after the bend in the intake.

-Chris
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#11 Old 03-26-2010, 04:04 PM
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the maf is after the bend on the AEM cai

correction- on the AEM cai for the pre-2008 model wrx the MAF sensor is after the bend, for the post-2008 wrx the MAF sensor is before the bend.

but for the agency power cai the MAF is after the bend on the 08+ wrx

Last edited by mosc; 03-29-2010 at 10:16 AM.
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#12 Old 03-26-2010, 04:10 PM
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I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post! I Will Not Double Post!

Last edited by mosc; 03-29-2010 at 10:16 AM.
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#13 Old 03-28-2010, 07:37 PM
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VENDOR BASHING IS NOT ALLOWED HERE
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#14 Old 03-29-2010, 10:16 AM
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stay on topic please folks

04 STi 16G powered lagless fun
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#15 Old 03-29-2010, 12:05 PM
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Technically, the inlet is part of the "intake" Mosc.... Justing wasn't vendor bashing... it was a parts bash. I don't see that anywhere in the forum rules. Can you direct me to that please ? Thanks.

Paul
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