Power lag in 2nd gear. Sporadic revs at idle

[Norinradd]

Ah yes makes perfect sense turtle. ������

[Norinradd]

That was supposed to be thumbs up not "????" Lol

[jwvand02]

Originally Posted by turtlefeeder

Nuuu Nuuu nu its not the intake lol. I'm running injen CAI right now with a cat back no issues from that because i keep factory header, planning to go with Works turbocharger soon than I'll get their ecu tuning. The issue is you have an aftermarket/performance header which increase air flow in your engine, it's more air than the ECU can know what to do with so it tries to compensate by throwing in more gas. So you idle roughly and power isn't constant on the throttle.

Factory header =Factory tune so it does what is intended to do, but aftermarket header+ factory tune= more than ecu can handle in factory spec. Like getting alignment after you swap for aftermarket coilovers, new item needs new setting to make it run normal or better
Hope this explanation put tuning into prospective

There's many tuner check it out via Google 😊 after tuning it soul is run Nuuu problem

I'm really not sure what the hell you're talking about, because it doesn't make any sense at all.

OP if any of the parts are the issue it's the intake, the header has no bearing on how much air flows through the engine. People run aftermarket headers on the stock tune with no issue.

The intake, on the other hand, has a lot to do with how the MAF reads the incoming air and can indeed throw off the AF mix if not scaled correctly.

Cheapest route to tune is to use an Openflash Tablet. I however am not completely sure this is your issue. Do you have a CEL? It sounds like the most likely culprit is a vacuum leak if it's not the intake. A tune will definitely help you get more power out of your mods even if it's not the issue, so it's not a waste of money if it doesn't turn out to be the problem.

I'd still look carefully for a vacuum leak and take a log if you can unless you were planning to get a tune anyways.

[Norinradd]

Originally Posted by jwvand02

I'm really not sure what the hell you're talking about, because it doesn't make any sense at all.

OP if any of the parts are the issue it's the intake, the header has no bearing on how much air flows through the engine. People run aftermarket headers on the stock tune with no issue.

The intake, on the other hand, has a lot to do with how the MAF reads the incoming air and can indeed throw off the AF mix if not scaled correctly.

Cheapest route to tune is to use an Openflash Tablet. I however am not completely sure this is your issue. Do you have a CEL? It sounds like the most likely culprit is a vacuum leak if it's not the intake. A tune will definitely help you get more power out of your mods even if it's not the issue, so it's not a waste of money if it doesn't turn out to be the problem.

I'd still look carefully for a vacuum leak and take a log if you can unless you were planning to get a tune anyways.

I have no cel. No lights on my dash what so ever. Is there a way to test for vacum leak other than just listening for air leaks while cars running? The motor is spotless. 10,000 miles. So i dont see the maf or throttle body being dirty...? As i said i brought to dealer and they reprogrammed ecu for the idle. They were aware of the issue on many stock frs's but it didnt help

[jwvand02]

Originally Posted by Norinradd

I have no cel. No lights on my dash what so ever. Is there a way to test for vacum leak other than just listening for air leaks while cars running? The motor is spotless. 10,000 miles. So i dont see the maf or throttle body being dirty...? As i said i brought to dealer and they reprogrammed ecu for the idle. They were aware of the issue on many stock frs's but it didnt help

You can spray starter fluid along the intake path and around vacuum hoses, sometimes it works sometimes it doesn't. Another option is to take it to a shop and have it smoke tested. As far as I'm aware, the only vacuum hose that should have been touched is the PCV that routes into the intake right before the throttle body. That would be the first place I'd check.

If you're seeing others have the same issue with the Injen intake, it is quite possibly the problem. If you have access to stock parts to put back on the car, you could answer your question quickly.

[Ashikabi]

Originally Posted by Norinradd

I have no cel. No lights on my dash what so ever. Is there a way to test for vacum leak other than just listening for air leaks while cars running? The motor is spotless. 10,000 miles. So i dont see the maf or throttle body being dirty...? As i said i brought to dealer and they reprogrammed ecu for the idle. They were aware of the issue on many stock frs's but it didnt help

So take it back to the dealer. This is why you have a warranty.

And to the guy above: headers do affect flow. Is it causing this problem? Maybe not but engines really only do one thing, flow. Flows in, flows out. Headers actually make really good power on these engines because they flow much better than stock. Again, might not be the problem that's how it is. Now I have seen elsewhere people had maf problems with the Injen intake.

[Norinradd]

Yes im reading more and more on the intake and i dont have a stock one. I cant really bitch to the dealersip either as theyll say the cars good and blame iton aftermarket parts. I have a feeling its the intake. I dont have a stock one to put on it. Dealership would want to much.

[Norinradd]

Ill try a vacum test. I heard a propane torch was the safest method. Beside smoke test

[turtlefeeder]

I highly doubt it's the intake but You'll still have issues even if you swap injen CAI back to oem because of the aftermarket header. Just go get it tuned with whatever you have on than you'll be set, unless you want warranty (if it's still during warranty period) than you'll have to definitely remove that header.

Ps I took my car to dealer with intake still in engine bay and they didn't say a thing when opening the hood lol besides I believe injen made it to work with oem maf/settings.