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Tacoma running lean with TRD cold air intake fix

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Old 12-01-2011, 11:18 AM   #22
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Quote:
Originally Posted by ottomastiff View Post
I did mention my build. there are bigger points that come with the super charger as lucaro mentioned. The plastic piece was starving the engine of air.
After cutting it off and letting the cai do its thing. everything came out peachy.
Sorry but you say that removing this piece is not starving the engine in air anymore. You've done that cause it was lean. So doing that you let enter more air that is not measure by the MAF sensor and you think the mixture is richer! Sorry but you have lean the mixture.

I can't comment precisely on the SC V6 cause i don't what are the change done on closed and opened loop by the reflash of the ECU.

But for the NA engine, in closed loop, the motor can't go lean. It's still possible in open loop (WOT) in case you have changed the aspiration system and then the shape of the funnel where is install the MAF sensor is so different than the STOCK OEM it affect the way the ECU's calculating the amount of air. And it's not the case with the TRD CAI.

To change the AFR on a NA engine you'll need to install a MAF calibrator to change the AFR ratio in opened loop and only in opened loop. In closed loop it will change nothing cause ECU is working against you to keep AFR close to 14.7.

If you wanna change the AFR in closed loop you'll need a much more expensive electronic device like MAP ECU or APR x1.
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Old 04-19-2012, 07:00 AM   #23
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Have you ever had the lean code since?

I was looking at the setup and I figure instead of cutting the end piece off, its possible to move the entire plastic assembly up to where it would be if the end was removed.

let me know your thoughts on this
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Old 07-11-2012, 04:55 PM   #24
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Quote:
Originally Posted by D4D Hilux Dude View Post
Have you ever had the lean code since?

I was looking at the setup and I figure instead of cutting the end piece off, its possible to move the entire plastic assembly up to where it would be if the end was removed.

let me know your thoughts on this
I'd like to know this as well. I've had a few lean codes pop up and sure enough my CAI tube was too long, it was blocking the crankase vent and the fpr line. I just cut the tube off. I'm hoping this fixes it.
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Old 07-11-2012, 04:59 PM   #25
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This didn't work for my 2nd gen intake. Whipper showed this to me awhile back, the tube on mine doesn't block any holes at all like in your video so there is nothing to modify.

I don't get lean codes on my 2011, I get P0101 MAF performance out of range. I've tired everything I can think of to fix this, still no go. Ordered a 1st gen to see if that fixes my issue.
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Old 07-11-2012, 05:03 PM   #26
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Quote:
Originally Posted by Aw9d View Post
This didn't work for my 2nd gen intake. Whipper showed this to me awhile back, the tube on mine doesn't block any holes at all like in your video so there is nothing to modify.

I don't get lean codes on my 2011, I get P0101 MAF performance out of range. I've tired everything I can think of to fix this, still no go. Ordered a 1st gen to see if that fixes my issue.
I think it mostly applies to s/c'd tacos. Mine was definitely blocked, and I am s/c'd. never got a lean code until i put the s/c on either.
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Old 07-13-2012, 10:19 AM   #27
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This seems to have fixed my lean codes. I haven't had one since, and I'm quite confident I would have had one by now.
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Old 07-13-2012, 12:55 PM   #28
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Quote:
Originally Posted by jizzaldo View Post
This seems to have fixed my lean codes. I haven't had one since, and I'm quite confident I would have had one by now.
Depends. My code would come on within 5 miles or 100 miles, it was never consistent.. I went weeks with no code, reset the ecu and would get a code with in a min. But hope it works for you!

Edit, sorry I missed your post before saying that you are S/C'd.
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Old 08-29-2012, 08:51 PM   #29
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I agree with Vassily28, in open loop the FRP is controlling the fuel flow back to the tank.
If the small hose going to the FPR is blocked it creates a lean condition. The FPR is called an Atmospheric modulated pressure regulator. I rather have a constant or adjustable FPR.

I can believe this is the problem or is part of the lean problem.
I have plugged this tube going to the fpr, but the only this is that i have a stock intake and its not popping the SES code.
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Old 10-06-2012, 03:58 PM   #30
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Quote:
Originally Posted by ottomastiff View Post
....I don't know if you'll need a reflash if you put in just a cai. but it is working great for me now....
You don't. Some other engine manufacturers do, but my toyota 4.0 does not. I don't see why the other engines in the Tacoma would, either.

Quote:
Originally Posted by Grande View Post
.....but i dont get why a N/A would be lean with a Intake.....
Me either. You aren't changing the A/F ratio at all. TRD calls it a "cold air intake", but really you're just changing it out for a system with less baffles and restrictions in it. The TRD system's intake point is just inside the fender, just as the stock system does. You don't really even get a filter that flows any better than a regular paper filter in regular use, and the stock secondary filter/baffle system is downstream of the MAF in the OEM system, anyway.

Quote:
Originally Posted by Hepdawg69 View Post
Awesome info!! Like others said been hesitant on getting the TRD CAI because of the lean issues. This helps me want to get it now, my s/c I know wants it ; )
Just get it. I got mine off eBay new, about $450. No complaints at all. Had it for about 4,500 miles now. It's just a bolt-in mod. You will like the improved throttle response whether or not you get the supercharger.
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Old 10-06-2012, 04:06 PM   #31
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Quote:
Originally Posted by Vassily28 View Post
Sorry but you say that removing this piece is not starving the engine in air anymore. You've done that cause it was lean. So doing that you let enter more air that is not measure by the MAF sensor and you think the mixture is richer! Sorry but you have lean the mixture.......

But for the NA engine, in closed loop, the motor can't go lean. It's still possible in open loop (WOT) in case you have changed the aspiration system and then the shape of the funnel where is install the MAF sensor is so different than the STOCK OEM it affect the way the ECU's calculating the amount of air. And it's not the case with the TRD CAI.

To change the AFR on a NA engine you'll need to install a MAF calibrator to change the AFR ratio in opened loop and only in opened loop. In closed loop it will change nothing cause ECU is working against you to keep AFR close to 14.7.

If you wanna change the AFR in closed loop you'll need a much more expensive electronic device like MAP ECU or APR x1.
All good things here. If you really are running lean, do you have a fuel system fault? Or if we're keeping things simple, did you double check to make sure your installation was correct? Maybe you have a coupling not tight enough? A coupler not seated on in a spot you can't see easily?
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Old 04-02-2013, 06:48 PM   #32
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Hi guys just wondering if any one knows if TRD do kit and flash for 1GR-FE . Iam in Australia and have Hilux we want to supercharge . Thanks in advance
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Old 01-18-2014, 04:48 PM   #33
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The problem is you can't block the small tube that comes from the FPR, it works off the atmospheric pressure within the intake system. During open loop which is wide open throttle, the FPR which is a valve system run off of atmospheric pressure closes to keep fuel on the fuel rail, so the engine don't lean out.

So when you don't have the gas pedal mashed and the engine goes back in to closed loop the FPR valve opens and allows fuel to go back to gas tank.
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Old 09-11-2014, 10:13 AM   #34
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So if I have no supercharger, and a stock engine and I put this intake on would it run lean? and is it loud and would it ruin my engine?
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Old 09-11-2014, 10:20 AM   #35
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Quote:
Originally Posted by thewarriordinghy View Post
So if I have no supercharger, and a stock engine and I put this intake on would it run lean? and is it loud and would it ruin my engine?
No, no, and no.
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Old 09-11-2014, 10:23 AM   #36
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So it doesn't add noise? everyone says it will? im talking about cab noise.(I think). So this IS a SAFE install with no harm?
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Old 09-11-2014, 10:25 AM   #37
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it will add noise under full throttle. Safe to run, even with S/C's we put one on and had no issues.
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Old 09-11-2014, 10:28 AM   #38
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then what is the whole deal about it?
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Old 09-11-2014, 10:30 AM   #39
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It's a performance mod.
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Old 09-11-2014, 10:34 AM   #40
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but why does everyone say it'll run lean?
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