Drop in, silicone tube, exhaust, NO tune...problems? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

BlackyRose · 07-05-2013, 05:11 PM

Anyone have problems with the following mods and no tune, just stock ecu.

Drop in filter
Silicone intake tube
Exhaust

Don't care about responses telling me to search or how I need a tune. just wanted a quick poll if anyone had problems with these mods on a stock ecu. I'm sure no one has, but curious nonetheless and it would take hours to search through hundreds if pages of different breather mod posts

jm1681 · 07-05-2013, 05:35 PM

Friend has all three on his BRZ, no tune no problems.

Probably more WITH a tune, but I think you'll be totally fine bolting on and going for it

BlackyRose · 07-05-2013, 06:21 PM

Thanks. I am 100% sure its fine, in fact Ive read on here that many people have a lot of breather mods without a tune. I was attempting to lure that 1 guy that has a problem (if he exists) and then order my parts according to his advice of what to stay away from

jflogerzi · 07-05-2013, 06:39 PM

You will be fine because the MAF is still in the OEM location. You might run a bit richer due to more airflow, but those 3 should be 100% fine without a tune. Might eek a bit more with a tune.

Nightbringer · 07-05-2013, 07:21 PM

Quote:

Originally Posted by jflogerzi

You will be fine because the MAF is still in the OEM location. You might run a bit richer due to more airflow, but those 3 should be 100% fine without a tune.

Exactly. Running these mods without a tune as well; no issues. Would recommend resetting the ECU though after installation.

MTCRX · 07-05-2013, 07:37 PM

I have Perrin drop in Filter and intake tube with TRD exhaust. Car runs much better than stock and I have had no problems. I did unplug the battery for about 10-15 minutes to reset the computer when I added the parts. So far all is well.

Blood · 07-05-2013, 07:53 PM

Another one here with those three mods and no tune.

I have:
Perrin inlet hose
Perrin drop-in filter
Perrin 2.5" catback exhaust

Been running with those mods for 5k miles and no issues.

wbradley · 07-05-2013, 07:58 PM

Same here no issues. Wish I could try a tune to see the difference.

BlackyRose · 07-05-2013, 08:02 PM

Are all of you guys above ^^ pretty satisfied with just the reset ECU and those mods?

Nightbringer · 07-05-2013, 08:06 PM

From dynos and what everyone says, a tune makes a night and day difference. However, I've put 7000 miles on with intake/exhaust and no tune and am very satisfied with the results. Marginal power gains in the grand scheme of things, but there've been no issues/problems, and gas mileage has only gotten better.

Fast_Freddy · 07-06-2013, 03:24 AM

Quote:

Originally Posted by jflogerzi

You will be fine because the MAF is still in the OEM location. You might run a bit richer due to more airflow, but those 3 should be 100% fine without a tune. Might eek a bit more with a tune.

It won't run richer. The MAS will see the extra airflow, tell the ECU and the ECU will add the correct amount of extra fuel. Then the wide-band O2 sensor (Toyota calls it an "AFR sensor") will monitor the actual AFR and the ECU will fine-tune the fuel trims to achieve the target AFR every time. All long term fuel trims also contribute to open loop table corrections so that the open loop AFR should also remain unchanged.

There are a lot of good reasons to get a tune but the only engine mod that actually NEEDS a tune is forced induction.

LeeMaster · 07-06-2013, 04:59 AM

Exhaust... full exhaust or catback?

BlackyRose · 07-06-2013, 11:02 AM

Quote:

Originally Posted by Fast_Freddy

It won't run richer. The MAS will see the extra airflow, tell the ECU and the ECU will add the correct amount of extra fuel. Then the wide-band O2 sensor (Toyota calls it an "AFR sensor") will monitor the actual AFR and the ECU will fine-tune the fuel trims to achieve the target AFR every time. All long term fuel trims also contribute to open loop table corrections so that the open loop AFR should also remain unchanged.

There are a lot of good reasons to get a tune but the only engine mod that actually NEEDS a tune is forced induction.

That's one hell of an answer. Nice to see a post that stays on topic!! Thanks

BlackyRose · 07-06-2013, 11:03 AM

Quote:

Originally Posted by LeeMaster

Exhaust... full exhaust or catback?

Probably zeta or something else in that price range. Probably leave the stock front pipe just to keep my cost down.

07-05-2013, 05:11 PM	#1
BlackyRose Senior Member Join Date: Jun 2013 Drives: 2013 Raven FR-S Location: Florida Posts: 486 Thanks: 31 Thanked 59 Times in 44 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Drop in, silicone tube, exhaust, NO tune...problems? Anyone have problems with the following mods and no tune, just stock ecu. Drop in filter Silicone intake tube Exhaust Don't care about responses telling me to search or how I need a tune. just wanted a quick poll if anyone had problems with these mods on a stock ecu. I'm sure no one has, but curious nonetheless and it would take hours to search through hundreds if pages of different breather mod posts

07-06-2013, 04:59 AM	#12
LeeMaster Red wine Join Date: Oct 2012 Drives: Subaru BRZ(R.I.P) Location: Denied Posts: 1,176 Thanks: 1,268 Thanked 342 Times in 240 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Exhaust... full exhaust or catback? __________________

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07-05-2013, 05:35 PM	#2
jm1681 Senior Member Join Date: Jul 2012 Drives: MKVI VW GTI Location: Suffern, NY Posts: 344 Thanks: 156 Thanked 38 Times in 32 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Friend has all three on his BRZ, no tune no problems. Probably more WITH a tune, but I think you'll be totally fine bolting on and going for it

07-05-2013, 06:21 PM	#3
BlackyRose Senior Member Join Date: Jun 2013 Drives: 2013 Raven FR-S Location: Florida Posts: 486 Thanks: 31 Thanked 59 Times in 44 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Thanks. I am 100% sure its fine, in fact Ive read on here that many people have a lot of breather mods without a tune. I was attempting to lure that 1 guy that has a problem (if he exists) and then order my parts according to his advice of what to stay away from

07-05-2013, 07:37 PM	#6
MTCRX Senior Member Join Date: Nov 2012 Drives: Whiteout FRS- autocross ready Location: Montana Posts: 283 Thanks: 136 Thanked 109 Times in 68 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I have Perrin drop in Filter and intake tube with TRD exhaust. Car runs much better than stock and I have had no problems. I did unplug the battery for about 10-15 minutes to reset the computer when I added the parts. So far all is well.

07-05-2013, 07:53 PM	#7
Blood Senior Member Join Date: Dec 2012 Drives: 2018 STI Location: RI Posts: 167 Thanks: 3 Thanked 59 Times in 36 Posts Mentioned: 1 Post(s) Tagged: 2 Thread(s)	Another one here with those three mods and no tune. I have: Perrin inlet hose Perrin drop-in filter Perrin 2.5" catback exhaust Been running with those mods for 5k miles and no issues.

07-05-2013, 08:02 PM	#9
BlackyRose Senior Member Join Date: Jun 2013 Drives: 2013 Raven FR-S Location: Florida Posts: 486 Thanks: 31 Thanked 59 Times in 44 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Are all of you guys above ^^ pretty satisfied with just the reset ECU and those mods?

07-05-2013, 08:06 PM	#10
Nightbringer Senior Member Join Date: Apr 2013 Drives: Scion FR-S Location: Nowhere Posts: 346 Thanks: 175 Thanked 211 Times in 120 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	From dynos and what everyone says, a tune makes a night and day difference. However, I've put 7000 miles on with intake/exhaust and no tune and am very satisfied with the results. Marginal power gains in the grand scheme of things, but there've been no issues/problems, and gas mileage has only gotten better.

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